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LT3999EMSE#PBF

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Switching Voltage Regulators Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control
Manufacturer: Analog Devices



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9868 - Global Stock
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Ships to you between Tue. 27 Apr to Thu. 29 Apr

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Multiples : 1

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LT3999EMSE#PBF
Analog Devices

1 : $ 14.1563
10 : $ 9.3008
50 : $ 8.1236
100 : $ 6.9632
250 : $ 6.7144
500 : $ 6.2668
1000 : $ 5.7528

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Manufacturer
Analog Devices
Product Category
Switching Voltage Regulators
RoHS - XON
Y Icon ROHS
Mounting Style
Smd/Smt
Output Current
1 A
Number of Outputs
1 Output
Input Voltage MAX
36 V
Input Voltage MIN
2.7 V
Switching Frequency
1000 Khz
Minimum Operating Temperature
- 40 C
Maximum Operating Temperature
+125 C
Series
Lt3999
Packaging
Tube
Input Voltage
2.7 v to 36 V
Operating Temperature Range
- 40 C to +125 C
Package / Case
MSOP-10
Quiescent Current
0.1 uA
Type
Push-Pull Dc/Dc Driver
Brand
Analog Devices
Shutdown
Shutdown
Development Kit
Dc2049a
Operating Supply Current
4.3 mA
Product Type
Switching Voltage Regulators
Factory Pack Quantity :
50
Subcategory
Pmic - Power Management Ics
Cnhts
8542319000
Hts Code
8542390001
Mxhts
85423901
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Mfr. Part No.
Description
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Mfr. Part No.
Description
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1184
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LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 ABSOLUTE MAXIMUM RATINGS (Note 1) SWA, SWB ................................................. ?0.3V to 80V Storage Temperature Range .................. ?65?C to 150?C V , UVLO .................................................. ?0.3V to 60V Lead Temperature (Soldering, 10 sec) IN OVLO/DC, SYNC ......................................... ?0.3V to 8V MSOP ...............................................................300?C Operating Junction Temperature Range (Note 2) LT3999E ............................................ ?40?C to 125?C LT3999I ............................................. ?40?C to 125?C LT3999H ............................................ ?40?C to 150?C LT3999MP ......................................... ?55?C to 150?C PIN CONFIGURATION TOP VIEW TOP VIEW SWA 1 10 SWB SWA 1 10 SWB RBIAS 2 9 ILIM/SS RBIAS 2 9 ILIM/SS 11 11 V 3 8 SYNC V 3 8 SYNC IN IN GND GND UVLO 4 7 RT UVLO 4 7 RT OVLO/DC 5 6 RDC OVLO/DC 5 6 RDC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE ? = 40?CW, ? = 10?CW JA JC 10-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ? = 43?C/W, ? = 5.5?C/W JA JC EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3999EMSE#PBF LT3999EMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999IMSE#PBF LT3999IMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999HMSE#PBF LT3999HMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 150?C LT3999MPMSE#PBF LT3999MPMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?55?C to 150?C LT3999EDD#PBF LT3999EDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LT3999IDD#PBF LT3999IDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C 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 nonstandard 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/ 3999fa 2 For more information www.linear.com/LT3999LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 ABSOLUTE MAXIMUM RATINGS (Note 1) SWA, SWB ................................................. ?0.3V to 80V Storage Temperature Range .................. ?65?C to 150?C V , UVLO .................................................. ?0.3V to 60V Lead Temperature (Soldering, 10 sec) IN OVLO/DC, SYNC ......................................... ?0.3V to 8V MSOP ...............................................................300?C Operating Junction Temperature Range (Note 2) LT3999E ............................................ ?40?C to 125?C LT3999I ............................................. ?40?C to 125?C LT3999H ............................................ ?40?C to 150?C LT3999MP ......................................... ?55?C to 150?C PIN CONFIGURATION TOP VIEW TOP VIEW SWA 1 10 SWB SWA 1 10 SWB RBIAS 2 9 ILIM/SS RBIAS 2 9 ILIM/SS 11 11 V 3 8 SYNC V 3 8 SYNC IN IN GND GND UVLO 4 7 RT UVLO 4 7 RT OVLO/DC 5 6 RDC OVLO/DC 5 6 RDC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE ? = 40?CW, ? = 10?CW JA JC 10-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ? = 43?C/W, ? = 5.5?C/W JA JC EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3999EMSE#PBF LT3999EMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999IMSE#PBF LT3999IMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999HMSE#PBF LT3999HMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 150?C LT3999MPMSE#PBF LT3999MPMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?55?C to 150?C LT3999EDD#PBF LT3999EDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LT3999IDD#PBF LT3999IDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C 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 nonstandard 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/ 3999fa 2 For more information www.linear.com/LT3999LT3999 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25?C. V = 15V A IN PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply and Shutdown V Minimum Operating Voltage l 2.7 V IN l V Overvoltage Lockout Internal, Rising 36 40 42 V IN V Supply Current (Note 3) 4.3 mA IN V Shutdown Current V = 0.3V 0.1 1 ?A IN UVLO UVLO Threshold (Rising) l 1.15 1.25 1.35 V UVLO Hysteresis 125 mV UVLO Pin Current V = 1.25V 10 100 nA UVLO OVLO/DC Threshold (Rising) l 1.15 1.25 1.35 V OVLO/DC Hysteresis 125 mV OVLO/DC Pin Current V = 1.25V 10 100 nA OVLO/DC Power Switches (SWA, SWB) Switch Saturation Voltage I = 1A 350 mV SW l Switch Current Limit Internal Default 1.0 1.4 1.7 A Non Overlap Time 70 ns Switch Base Drive Current I = 1A 35 mA SW Oscillator/Sync Switching Frequency R = 316k 50 kHz T l R = 49.9k 280 300 320 kHz T R = 12.1k 1000 kHz T Synchronization Frequency Range 100 1000 kHz SYNC Voltage Threshold 1.5 V SYNC Pin Input Resistance 200 k? ILIM/SS l SWA and SWB Current Limit R = 43.2k 0.4 0.5 0.6 A ILIM/SS ILIM/SS Pin Current 10 ?A Duty Cycle Switch Duty Cycle OVLO/DC = 0.8V, R = 24.3k, R = 49.9k 20 % DC T OVLO/DC = 0.612V, R = 24.3k, R = 49.9k l 22 25 30 % DC T OVLO/DC = 0.3V, R = 24.3k, R = 49.9k 48 % DC T Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: Supply current specification does not include switch drive may cause permanent damage to the device. Exposure to any Absolute currents. Actual supply currents will be higher. Maximum Rating condition for extended periods may affect the device reliability and lifetime. Note 2: The LT3999E is guaranteed to meet performance specifications from 0?C to 125?C junction temperature. Specifications over the ?40?C to 125?C operating junction temperature range are assured by design, characterization, and correlation with statistical process controls. The LT3999I Is guaranteed over the ?40?C to 125?C operating junction temperature range. The LT3999H is guaranteed over the full ?40?C to 150?C operating junction temperature range. The LT3999MP is 100% tested and guaranteed over the ?55?C to 150?C junction temperature range. High junction temperatures degrade operating lifetimes; operating lifetime is derated for junction temperatures greater than 125?C. 3999fa 3 For more information www.linear.com/LT3999LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 ABSOLUTE MAXIMUM RATINGS (Note 1) SWA, SWB ................................................. ?0.3V to 80V Storage Temperature Range .................. ?65?C to 150?C V , UVLO .................................................. ?0.3V to 60V Lead Temperature (Soldering, 10 sec) IN OVLO/DC, SYNC ......................................... ?0.3V to 8V MSOP ...............................................................300?C Operating Junction Temperature Range (Note 2) LT3999E ............................................ ?40?C to 125?C LT3999I ............................................. ?40?C to 125?C LT3999H ............................................ ?40?C to 150?C LT3999MP ......................................... ?55?C to 150?C PIN CONFIGURATION TOP VIEW TOP VIEW SWA 1 10 SWB SWA 1 10 SWB RBIAS 2 9 ILIM/SS RBIAS 2 9 ILIM/SS 11 11 V 3 8 SYNC V 3 8 SYNC IN IN GND GND UVLO 4 7 RT UVLO 4 7 RT OVLO/DC 5 6 RDC OVLO/DC 5 6 RDC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE ? = 40?CW, ? = 10?CW JA JC 10-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ? = 43?C/W, ? = 5.5?C/W JA JC EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3999EMSE#PBF LT3999EMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999IMSE#PBF LT3999IMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999HMSE#PBF LT3999HMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 150?C LT3999MPMSE#PBF LT3999MPMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?55?C to 150?C LT3999EDD#PBF LT3999EDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LT3999IDD#PBF LT3999IDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C 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 nonstandard 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/ 3999fa 2 For more information www.linear.com/LT3999LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control FEATURES DESCRIPTION ? n Wide Input Operating Range: 2.7V to 36V The LT 3999 is a monolithic, high voltage, high frequency n Dual 1A Switches with Programmable Current Limit DC/DC transformer driver providing isolated power in a n Programmable Switching Frequency: 50kHz to 1MHz small solution footprint. n Frequency Synchronization Up to 1MHz The LT3999 has two 1A current limited power switches n ?V Compensation Using Duty Cycle Control IN that switch out of phase. The duty cycle is programmable n Low Noise Topology to adjust the output voltage. The switching frequency is n Programmable Input Over and Undervoltage Lockout programmed up to 1MHz and can be synchronized to an n Cross Conduction Prevention Circuitry external clock for more accurate placement of switcher n Programmable Soft-Start harmonics. The input operating range is programmed n Low Shutdown Current: <1?A with the precision undervoltage and overvoltage lockouts. n 10-Lead MSOP and DFN Packages The supply current is reduced to less than 1?A during shutdown. A user-defined RC time constant provides an APPLICATIONS adjustable soft-start capability by limiting the inrush cur- rent at start-up. n Low Noise Isolated Supplies n Medical Instrument and Safety The LT3999 is available in a 10-lead MSOP and 3mm ? n Distributed Power 3mm DFN package with exposed pad. n Multiple Output Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Positive-to-Negative Supplies n Noise Immunity in Data Acquisition, RS232 and?RS485 TYPICAL APPLICATION LT3999 Line Regulation with 12V to 12V, 10W Low Noise Isolated DC/DC Converter Duty Cycle Control V IN 16 12V 10?F 16V 15 V IN 15.3?H V OUT SYNC 12V SWA   14 0.8A 255k UVLO 10?F 16V I = 400mA 13 OVLO/DC OUT I = 200mA OUT RDC 10k 12   LT3999 15.8k I = 800mA OUT 11 3999 TA01a SWB RT 10 ILIM/SS 9 RBIAS 28k GND 0.1?F 49.9k 500kHz 8 10 11 12 13 14 15 16 17 18 INPUT VOLTAGE (V) 3999 TA01b 3999fa 1 For more information www.linear.com/LT3999 OUTPUT VOLTAGE (V)LT3999 ABSOLUTE MAXIMUM RATINGS (Note 1) SWA, SWB ................................................. ?0.3V to 80V Storage Temperature Range .................. ?65?C to 150?C V , UVLO .................................................. ?0.3V to 60V Lead Temperature (Soldering, 10 sec) IN OVLO/DC, SYNC ......................................... ?0.3V to 8V MSOP ...............................................................300?C Operating Junction Temperature Range (Note 2) LT3999E ............................................ ?40?C to 125?C LT3999I ............................................. ?40?C to 125?C LT3999H ............................................ ?40?C to 150?C LT3999MP ......................................... ?55?C to 150?C PIN CONFIGURATION TOP VIEW TOP VIEW SWA 1 10 SWB SWA 1 10 SWB RBIAS 2 9 ILIM/SS RBIAS 2 9 ILIM/SS 11 11 V 3 8 SYNC V 3 8 SYNC IN IN GND GND UVLO 4 7 RT UVLO 4 7 RT OVLO/DC 5 6 RDC OVLO/DC 5 6 RDC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE ? = 40?CW, ? = 10?CW JA JC 10-LEAD (3mm ? 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ? = 43?C/W, ? = 5.5?C/W JA JC EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3999EMSE#PBF LT3999EMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999IMSE#PBF LT3999IMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 125?C LT3999HMSE#PBF LT3999HMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?40?C to 150?C LT3999MPMSE#PBF LT3999MPMSE#TRPBF LTGKR 10-Lead Plastic MSOP ?55?C to 150?C LT3999EDD#PBF LT3999EDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C LT3999IDD#PBF LT3999IDD#TRPBF LGKQ 10-Lead (3mm ? 3mm) Plastic DFN ?40?C to 125?C 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 nonstandard 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/ 3999fa 2 For more information www.linear.com/LT3999LT3999 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25?C. V = 15V A IN PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply and Shutdown V Minimum Operating Voltage l 2.7 V IN l V Overvoltage Lockout Internal, Rising 36 40 42 V IN V Supply Current (Note 3) 4.3 mA IN V Shutdown Current V = 0.3V 0.1 1 ?A IN UVLO UVLO Threshold (Rising) l 1.15 1.25 1.35 V UVLO Hysteresis 125 mV UVLO Pin Current V = 1.25V 10 100 nA UVLO OVLO/DC Threshold (Rising) l 1.15 1.25 1.35 V OVLO/DC Hysteresis 125 mV OVLO/DC Pin Current V = 1.25V 10 100 nA OVLO/DC Power Switches (SWA, SWB) Switch Saturation Voltage I = 1A 350 mV SW l Switch Current Limit Internal Default 1.0 1.4 1.7 A Non Overlap Time 70 ns Switch Base Drive Current I = 1A 35 mA SW Oscillator/Sync Switching Frequency R = 316k 50 kHz T l R = 49.9k 280 300 320 kHz T R = 12.1k 1000 kHz T Synchronization Frequency Range 100 1000 kHz SYNC Voltage Threshold 1.5 V SYNC Pin Input Resistance 200 kO ILIM/SS l SWA and SWB Current Limit R = 43.2k 0.4 0.5 0.6 A ILIM/SS ILIM/SS Pin Current 10 ?A Duty Cycle Switch Duty Cycle OVLO/DC = 0.8V, R = 24.3k, R = 49.9k 20 % DC T OVLO/DC = 0.612V, R = 24.3k, R = 49.9k l 22 25 30 % DC T OVLO/DC = 0.3V, R = 24.3k, R = 49.9k 48 % DC T Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: Supply current specification does not include switch drive may cause permanent damage to the device. Exposure to any Absolute currents. Actual supply currents will be higher. Maximum Rating condition for extended periods may affect the device reliability and lifetime. Note 2: The LT3999E is guaranteed to meet performance specifications from 0?C to 125?C junction temperature. Specifications over the ?40?C to 125?C operating junction temperature range are assured by design, characterization, and correlation with statistical process controls. The LT3999I Is guaranteed over the ?40?C to 125?C operating junction temperature range. The LT3999H is guaranteed over the full ?40?C to 150?C operating junction temperature range. The LT3999MP is 100% tested and guaranteed over the ?55?C to 150?C junction temperature range. High junction temperatures degrade operating lifetimes; operating lifetime is derated for junction temperatures greater than 125?C. 3999fa 3 For more information www.linear.com/LT3999

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