Product Information

LTC3631EMS8E-5#PBF

Product Image X-ON

Datasheet
Switching Voltage Regulators High Efficiency, 45Vin, 100mA uPwr Synch. Step-Down Converter, Fixed 5Vout
Manufacturer: Analog Devices



Price (Ex GST)

From 6.1674

94 - Global Stock
Ships to you between
Thu. 22 Apr to Mon. 26 Apr

MOQ: 1 Multiples:1
Pack Size :   1
Availability Price Quantity
94 - Global Stock


Ships to you between Thu. 22 Apr to Mon. 26 Apr

MOQ : 1
Multiples : 1

Stock Image

LTC3631EMS8E-5#PBF
Analog Devices

1 : $ 15.1822
10 : $ 9.9806
50 : $ 8.7206
100 : $ 7.4606
250 : $ 7.1952
500 : $ 6.731
1000 : $ 6.1674

Buy
   
Manufacturer
Analog Devices
Product Category
Switching Voltage Regulators
RoHS - XON
Y Icon ROHS
Mounting Style
Smd/Smt
Output Voltage
5 V
Output Current
0.1 A
Number of Outputs
1 Output
Input Voltage MAX
45 V
Topology
Buck
Input Voltage MIN
4.5 V
Minimum Operating Temperature
- 40 C
Maximum Operating Temperature
+125 C
Series
Ltc3631
Packaging
Tube
Input Voltage
4.5 v to 45 V
Operating Temperature Range
- 40 C to +125 C
Package / Case
MSOP-8
Quiescent Current
12 uA
Type
High Efficiency Synchronous Step Down Converter
Brand
Analog Devices
Shutdown
Shutdown
Development Kit
Dc1499a
Operating Supply Current
0.012 mA
Product Type
Switching Voltage Regulators
Factory Pack Quantity :
50
Subcategory
Pmic - Power Management Ics
Cnhts
8542390000
Hts Code
8542390001
Mxhts
85423901
LoadingGif
Image
Mfr. Part No.
Description
Stock
Switching Voltage Regulators High Efficiency, 45Vin, 100mA uPwr Synch. Step-Down Converter, Fixed 5Vout
1503
Switching Voltage Regulators High Efficiency, 45Vin, 100mA uPwr Synch. Step-Down Converter, Fixed 3.3Vout
150
Image
Mfr. Part No.
Description
Stock
Preci-dip
90
EMI Gaskets, Sheets, Absorbers & Shielding CRS, 44.37mmx44.37mm Std Shield Frame
568
Res Metal Film 16.2K Ohm 1% 1/2W ±100ppm/°C Conformal AXL Thru-Hole T/R
5000
Switching Voltage Regulators 4.5V to 42V Input, High-Efficiency, Iso-Buck DC-DC Converter
1734
ESD Suppressors / TVS Diodes Transient Voltage Suppressor
5000
Res Thick Film 0805 4.87K Ohm 1% 1/8W ±100ppm/°C Molded SMD SMD Paper T/R
320000

POWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3631 Ta e MaxiMMu Tar (Note 1) V Supply Voltage ..................................... ?0.3V to 60V Operating Junction Temperature Range IN SW Voltage (DC) ........................... ?0.3V to (V + 0.3V) (Note 2) .................................................. ?40?C to 125?C IN RUN Voltage .............................................. ?0.3V to 60V Storage Temperature Range ................... ?65?C to 150?C HYST, I , SS Voltages ............................... ?0.3V to 6V Lead Temperature (Soldering, 10 sec) SET V ............................................................... ?0.3V to 6V MS8E ................................................................ 300?C FB V (Fixed Output Versions) ....................... ?0.3V to 6V OUT in p Fc T TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND V 2 7 HYST IN 9 V 2 9 7 HYST IN GND GND I 3 6 V /V I V /V SET OUT FB 3 6 SET OUT FB SS 4 5 RUN SS RUN 4 5 MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125?C, ? = 40?C/W, ? = 5?-10?C/W JMAX JA JC 8-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB T = 125?C, ? = 43?C/W, ? = 3?C/W JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB Der inFMTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EDD#PBF LTC3631EDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LFFN ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LFFQ 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD#PBF LTC3631IDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LFFN 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LFFQ ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 3631fe 2 For more information www.linear.com/LTC3631 ion or or ion igura on ings bsoluPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3631 Ta e MaxiMMu Tar (Note 1) V Supply Voltage ..................................... ?0.3V to 60V Operating Junction Temperature Range IN SW Voltage (DC) ........................... ?0.3V to (V + 0.3V) (Note 2) .................................................. ?40?C to 125?C IN RUN Voltage .............................................. ?0.3V to 60V Storage Temperature Range ................... ?65?C to 150?C HYST, I , SS Voltages ............................... ?0.3V to 6V Lead Temperature (Soldering, 10 sec) SET V ............................................................... ?0.3V to 6V MS8E ................................................................ 300?C FB V (Fixed Output Versions) ....................... ?0.3V to 6V OUT in p Fc T TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND V 2 7 HYST IN 9 V 2 9 7 HYST IN GND GND I 3 6 V /V I V /V SET OUT FB 3 6 SET OUT FB SS 4 5 RUN SS RUN 4 5 MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125?C, ? = 40?C/W, ? = 5?-10?C/W JMAX JA JC 8-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB T = 125?C, ? = 43?C/W, ? = 3?C/W JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB Der inFMTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EDD#PBF LTC3631EDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LFFN ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LFFQ 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD#PBF LTC3631IDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LFFN 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LFFQ ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 3631fe 2 For more information www.linear.com/LTC3631 ion or or ion igura on ings bsoluLTC3631 Te rical Tc T The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are for T = 25?C (Note 2). V = 10V, unless otherwise noted. A IN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply (V ) IN V Input Voltage Operating Range 4.5 45 V IN l UVLO V Undervoltage Lockout V Rising 3.80 4.15 4.50 V IN IN l V Falling 3.75 4.00 4.35 V IN Hysteresis 150 mV OVLO V Overvoltage Lockout V Rising 47 50 52 V IN IN V Falling 45 48 50 V IN Hysteresis 2 V I DC Supply Current (Note 3) Q Active Mode 125 220 ?A Sleep Mode 12 22 ?A Shutdown Mode V = 0V 3 6 ?A RUN Output Supply (V /V ) OUT FB V Output Voltage Trip Thresholds LTC3631-3.3V, V Rising l 3.260 3.310 3.360 V OUT OUT LTC3631-3.3V, V Falling l 3.240 3.290 3.340 V OUT l LTC3631-5V, V Rising 4.940 5.015 5.090 V OUT l LTC3631-5V, V Falling 4.910 4.985 5.060 V OUT V Feedback Comparator Trip Voltage V Rising l 0.792 0.800 0.808 V FB FB l V Feedback Comparator Hysteresis 3 5 7 mV HYST I Feedback Pin Current Adjustable Output Version, V = 1V ?10 0 10 nA FB FB ?V Feedback Voltage Line Regulation V = 4.5V to 45V 0.001 %/V LINEREG IN LTC3631-5, V = 6V to 45V IN Operation V Run Pin Threshold Voltage RUN Rising 1.17 1.21 1.25 V RUN RUN Falling 1.06 1.10 1.14 V Hysteresis 110 mV I Run Pin Leakage Current RUN = 1.3V ?10 0 10 nA RUN V Hysteresis Pin Voltage Low RUN < 1V, I = 1mA 0.07 0.1 V HYSTL HYST I Hysteresis Pin Leakage Current V = 1.3V ?10 0 10 nA HYST HYST I Soft-Start Pin Pull-Up Current V < 1.5V 4.5 5.5 6.5 ?A SS SS t Internal Soft-Start Time SS Pin Floating 0.75 ms INTSS I Peak Current Trip Threshold I Floating l 200 225 280 mA PEAK SET 500k Resistor from I to GND 120 mA SET I Shorted to GND 40 50 65 mA SET R Power Switch On-Resistance ON Top Switch I = ?25mA 3.0 ? SW Bottom Switch I = 25mA 1.5 ? SW Note 1: Stresses beyond those listed under Absolute Maximum Ratings temperature range. Note that the maximum ambient temperature may cause permanent damage to the device. Exposure to any Absolute consistent with these specifications is determined by specific operating Maximum Rating condition for extended periods may affect device conditions in conjunction with board layout, the rated package thermal reliability and lifetime. impedance and other environmental factors. The junction temperature (T , in ?C) is calculated from the ambient temperature (T , in ?C) and power Note 2: The LTC3631 is tested under pulsed load conditions such that J A dissipation (PD, in Watts) according to the formula: T ? T . The LTC3631E is guaranteed to meet specifications from J A 0?C to 85?C junction temperature. Specicfi ations over the ?40?C to T = T + (PD ? ? ) J A JA 125?C operating junction temperature range are assured by design, where ? (in ?C/W) is the package thermal impedance. JA characterization and correlation with statistical process controls. The Note 3: Dynamic supply current is higher due to the gate charge being LTC3631I is guaranteed over the full ?40?C to 125?C operating junction delivered at the switching frequency. See Applications Information. 3631fe 3 For more information www.linear.com/LTC3631 ics eris harac lecPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3631 Ta e MaxiMMu Tar (Note 1) V Supply Voltage ..................................... ?0.3V to 60V Operating Junction Temperature Range IN SW Voltage (DC) ........................... ?0.3V to (V + 0.3V) (Note 2) .................................................. ?40?C to 125?C IN RUN Voltage .............................................. ?0.3V to 60V Storage Temperature Range ................... ?65?C to 150?C HYST, I , SS Voltages ............................... ?0.3V to 6V Lead Temperature (Soldering, 10 sec) SET V ............................................................... ?0.3V to 6V MS8E ................................................................ 300?C FB V (Fixed Output Versions) ....................... ?0.3V to 6V OUT in p Fc T TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND V 2 7 HYST IN 9 V 2 9 7 HYST IN GND GND I 3 6 V /V I V /V SET OUT FB 3 6 SET OUT FB SS 4 5 RUN SS RUN 4 5 MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125?C, ? = 40?C/W, ? = 5?-10?C/W JMAX JA JC 8-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB T = 125?C, ? = 43?C/W, ? = 3?C/W JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB Der inFMTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EDD#PBF LTC3631EDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LFFN ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LFFQ 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD#PBF LTC3631IDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LFFN 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LFFQ ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 3631fe 2 For more information www.linear.com/LTC3631 ion or or ion igura on ings bsoluPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (mW) LTC3631 High Efficiency, High Voltage 100mA Synchronous Step-Down Converter FeaT DescripT ? n Wide Input Voltage Range: Operation from 4.5V to 45V The LTC 3631 is a high voltage, high efficiency step-down n Overvoltage Lockout Provides Protection Up to 60V DC/DC converter with internal high side and synchronous n Internal High Side and Low Side Power Switches power switches that draws only 12?A typical DC supply n No Compensation Required current at no load while maintaining output voltage n 100mA Output Current regulation. n Low Dropout Operation: 100% Duty Cycle The LTC3631 can supply up to 100mA load current and n Low Quiescent Current: 12?A features a programmable peak current limit that provides n 0.8V ?1% Feedback Voltage Reference a simple method for optimizing efficiency in lower current n Adjustable Peak Current Limit ? applications. The LTC3631?s combination of Burst Mode n Internal and External Soft-Start operation, integrated power switches, low quiescent cur- n Precise RUN Pin Threshold with Adjustable rent, and programmable peak current limit provides high Hysteresis efficiency over a broad range of load currents. n 3.3V, 5V and Adjustable Output Versions n With its wide 4.5V to 45V input range and internal overvolt- Only Three External Components Required for Fixed age monitor capable of protecting the part from 60V surges, Output Versions n the LTC3631 is a robust converter suited for regulating a Low Profile (0.75mm) 3mm ? 3mm DFN and wide variety of power sources. Additionally, the LTC3631 Thermally-Enhanced MS8E Packages includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled Ta in any environment. n 4mA to 20mA Current Loops The LTC3631 is available in the thermally enhanced n Industrial Control Supplies 3mm ? 3mm DFN and MS8E packages. n Distributed Power Systems L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks n Portable Instruments and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Battery-Operated Devices n Automotive Power Systems Efficiency and Power Loss vs Load Current Typical Ta 100 EFFICIENCY 90 1000 5V, 100mA Step-Down Converter 80 100?H V OUT V 70 100 IN V SW 5V IN 5V TO 45V 100mA LTC3631-5 2.2?F 10?F 60 RUN V POWER LOSS OUT 50 10 HYST SS I SET 40 GND 30 1 V = 12V IN 3631 TA01a V = 36V IN 20 0.1 1 10 100 LOAD CURRENT (mA) 3631 TA01b 3631fe 1 For more information www.linear.com/LTC3631 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3631 Ta e MaxiMMu Tar (Note 1) V Supply Voltage ..................................... ?0.3V to 60V Operating Junction Temperature Range IN SW Voltage (DC) ........................... ?0.3V to (V + 0.3V) (Note 2) .................................................. ?40?C to 125?C IN RUN Voltage .............................................. ?0.3V to 60V Storage Temperature Range ................... ?65?C to 150?C HYST, I , SS Voltages ............................... ?0.3V to 6V Lead Temperature (Soldering, 10 sec) SET V ............................................................... ?0.3V to 6V MS8E ................................................................ 300?C FB V (Fixed Output Versions) ....................... ?0.3V to 6V OUT in p Fc T TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND V 2 7 HYST IN 9 V 2 9 7 HYST IN GND GND I 3 6 V /V I V /V SET OUT FB 3 6 SET OUT FB SS 4 5 RUN SS RUN 4 5 MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125?C, ? = 40?C/W, ? = 5?-10?C/W JMAX JA JC 8-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB T = 125?C, ? = 43?C/W, ? = 3?C/W JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB Der inFMTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTFDT 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP ?40?C to 125?C LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP ?40?C to 125?C LTC3631EDD#PBF LTC3631EDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LFFN ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LFFQ 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD#PBF LTC3631IDD#TRPBF LFDV 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LFFN 8-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LFFQ ?40?C to 125?C 8-Lead (3mm ? 3mm) Plastic DFN Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 3631fe 2 For more information www.linear.com/LTC3631 ion or or ion igura on ings bsoluLTC3631 Te rical Tc T The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are for T = 25?C (Note 2). V = 10V, unless otherwise noted. A IN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply (V ) IN V Input Voltage Operating Range 4.5 45 V IN l UVLO V Undervoltage Lockout V Rising 3.80 4.15 4.50 V IN IN l V Falling 3.75 4.00 4.35 V IN Hysteresis 150 mV OVLO V Overvoltage Lockout V Rising 47 50 52 V IN IN V Falling 45 48 50 V IN Hysteresis 2 V I DC Supply Current (Note 3) Q Active Mode 125 220 ?A Sleep Mode 12 22 ?A Shutdown Mode V = 0V 3 6 ?A RUN Output Supply (V /V ) OUT FB V Output Voltage Trip Thresholds LTC3631-3.3V, V Rising l 3.260 3.310 3.360 V OUT OUT LTC3631-3.3V, V Falling l 3.240 3.290 3.340 V OUT l LTC3631-5V, V Rising 4.940 5.015 5.090 V OUT l LTC3631-5V, V Falling 4.910 4.985 5.060 V OUT V Feedback Comparator Trip Voltage V Rising l 0.792 0.800 0.808 V FB FB l V Feedback Comparator Hysteresis 3 5 7 mV HYST I Feedback Pin Current Adjustable Output Version, V = 1V ?10 0 10 nA FB FB ?V Feedback Voltage Line Regulation V = 4.5V to 45V 0.001 %/V LINEREG IN LTC3631-5, V = 6V to 45V IN Operation V Run Pin Threshold Voltage RUN Rising 1.17 1.21 1.25 V RUN RUN Falling 1.06 1.10 1.14 V Hysteresis 110 mV I Run Pin Leakage Current RUN = 1.3V ?10 0 10 nA RUN V Hysteresis Pin Voltage Low RUN < 1V, I = 1mA 0.07 0.1 V HYSTL HYST I Hysteresis Pin Leakage Current V = 1.3V ?10 0 10 nA HYST HYST I Soft-Start Pin Pull-Up Current V < 1.5V 4.5 5.5 6.5 ?A SS SS t Internal Soft-Start Time SS Pin Floating 0.75 ms INTSS I Peak Current Trip Threshold I Floating l 200 225 280 mA PEAK SET 500k Resistor from I to GND 120 mA SET I Shorted to GND 40 50 65 mA SET R Power Switch On-Resistance ON Top Switch I = ?25mA 3.0 O SW Bottom Switch I = 25mA 1.5 O SW Note 1: Stresses beyond those listed under Absolute Maximum Ratings temperature range. Note that the maximum ambient temperature may cause permanent damage to the device. Exposure to any Absolute consistent with these specifications is determined by specific operating Maximum Rating condition for extended periods may affect device conditions in conjunction with board layout, the rated package thermal reliability and lifetime. impedance and other environmental factors. The junction temperature (T , in ?C) is calculated from the ambient temperature (T , in ?C) and power Note 2: The LTC3631 is tested under pulsed load conditions such that J A dissipation (PD, in Watts) according to the formula: T ? T . The LTC3631E is guaranteed to meet specifications from J A 0?C to 85?C junction temperature. Specicfi ations over the ?40?C to T = T + (PD ? ? ) J A JA 125?C operating junction temperature range are assured by design, where ? (in ?C/W) is the package thermal impedance. JA characterization and correlation with statistical process controls. The Note 3: Dynamic supply current is higher due to the gate charge being LTC3631I is guaranteed over the full ?40?C to 125?C operating junction delivered at the switching frequency. See Applications Information. 3631fe 3 For more information www.linear.com/LTC3631 ics eris harac lec

Tariff Concession Code
Tariff Desc

Free
8542.31.00 51 No ..Application Specific (Digital) Integrated Circuits (ASIC)

Electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
Monolithic integrated circuits:
AD4
ANALOG DEVICES
Analog Devices Hittite
ANALOG DEVICES (LINEAR TECHNOLOGY)
Analog Devices / Hittite
Analog Devices / Linear Technology
Analog Devices Inc
Analog Devices Inc.
Analog Devices, Inc.
ANALOG MICRO ELECTRONICS
ANALOG MICROELECTRONICS
LINEAR
LINEAR TECH
Linear Technology
Linear Technology (part of ADI)
LT
LT4
Technology