Product Information

LTC3872HDDB#TRMPBF

Product Image X-ON

Datasheet
Switching Voltage Regulators No Rsense, Current Mode Boost DC/DC Controller
Manufacturer: Analog Devices



Price (Ex GST)

From 4.924

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

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


Ships to you between Tue. 27 Apr to Thu. 29 Apr

MOQ : 1
Multiples : 1

Stock Image

LTC3872HDDB#TRMPBF
Analog Devices

1 : $ 10.6685
10 : $ 6.9632
25 : $ 6.9466
100 : $ 6.5322
250 : $ 5.7198
500 : $ 5.6534
1000 : $ 5.1394
2500 : $ 4.9736
5000 : $ 4.924

Buy
   
Manufacturer
Analog Devices
Product Category
Switching Voltage Regulators
RoHS - XON
Y Icon ROHS
Mounting Style
Smd/Smt
Output Voltage
1.2 v to 60 V
Number of Outputs
1 Output
Input Voltage MAX
9.8 V
Topology
Boost, Flyback, Sepic
Input Voltage MIN
2.75 V
Switching Frequency
550 Khz
Minimum Operating Temperature
- 40 C
Maximum Operating Temperature
+150 C
Qualification
Aec-Q100
Series
Ltc3872
Packaging
Cut Tape
Input Voltage
2.75 v to 9.8 V
Package / Case
DFN-8
Type
Dc/Dc Controller
Brand
Analog Devices
Shutdown
Shutdown
Development Kit
Dc989b-A
Load Regulation
0.05 %
Operating Supply Current
0.25 mA
Product Type
Switching Voltage Regulators
Factory Pack Quantity :
500
Subcategory
Pmic - Power Management Ics
Cnhts
8542390000
Hts Code
8542390001
Mxhts
85423901
LoadingGif
Image
Mfr. Part No.
Description
Stock
Switching Voltage Regulators No Rsense, Current Mode Boost DC/DC Controller
55
Switching Voltage Regulators No Rsense, Current Mode Boost DC/DC Controller
277
PMIC; DC/DC converter; Uin:2.75÷9.8V; Uout:1.2÷60V; TSOT23-8
3
Image
Mfr. Part No.
Description
Stock
D-Sub Standard Connectors RCPT,21POS,NISHELL AUEON,THRUHOLE,MDPF
20
Aluminum Electrolytic Capacitors - Radial Leaded WCAP-ATLL 35V 680uF 20% ESR=84mOhms
288
3M SLIC CLOSURE END SEAL SINGLE PORT
10
Aluminum Electrolytic Capacitors - Radial Leaded WCAP-ATG5 25V 1800uF 20% ESR=58mOhms
518
Aluminum Electrolytic Capacitors - Radial Leaded 2200UF 25V
236
ESD Suppressors / TVS Diodes 200W 30V BIDIRECTION AEC-Q101
7748
Switching Voltage Regulators uP Reg 5V Charge Pump DC/DC Converter
654

POWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3872 a Te Maxi Mu M r a T (Note 1) Input Supply Voltage (V ), RUN/SS .......... ?0.3V to 10V Operating Junction Temperature Range IN IPRG Voltage ................................. ?0.3V to (V + 0.3V) (Notes 2, 3) ............................................ ?40?C to 150?C IN V , I Voltages ....................................... ?0.3V to 2.4V Storage Temperature Range .................. ?65?C to 150?C FB TH SW Voltage ................................................ ?0.3V to 60V Lead Temperature (Soldering, 10 sec) TS8 Package .........................................................300?C p in c F T TOP VIEW TOP VIEW GND 1 8 NGATE IPRG 1 8 SW V 2 7 V FB IN I 2 7 RUN/SS TH 9 I 3 6 RUN/SS TH V 3 6 V FB IN IPRG 4 5 SW GND 4 5 NGATE TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 DDB PACKAGE 8-LEAD (3mm ? 2mm) PLASTIC DFN T = 150?C, ? = 195?C/W JMAX JA T = 150?C, ? = 76?C/W JMAX JA EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3872ETS8#PBF LTC3872ETS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 85?C LTC3872ITS8#PBF LTC3872ITS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 125?C LTC3872HTS8#PBF LTC3872HTS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 150?C LTC3872EDDB#PBF LTC3872EDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 85?C LTC3872IDDB#PBF LTC3872IDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 125?C LTC3872HDDB#PBF LTC3872HDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 150?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 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/ 3872fc 2 For more information www.linear.com/LTC3872 ion or ion igura on ings bsoluPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3872 a Te Maxi Mu M r a T (Note 1) Input Supply Voltage (V ), RUN/SS .......... ?0.3V to 10V Operating Junction Temperature Range IN IPRG Voltage ................................. ?0.3V to (V + 0.3V) (Notes 2, 3) ............................................ ?40?C to 150?C IN V , I Voltages ....................................... ?0.3V to 2.4V Storage Temperature Range .................. ?65?C to 150?C FB TH SW Voltage ................................................ ?0.3V to 60V Lead Temperature (Soldering, 10 sec) TS8 Package .........................................................300?C p in c F T TOP VIEW TOP VIEW GND 1 8 NGATE IPRG 1 8 SW V 2 7 V FB IN I 2 7 RUN/SS TH 9 I 3 6 RUN/SS TH V 3 6 V FB IN IPRG 4 5 SW GND 4 5 NGATE TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 DDB PACKAGE 8-LEAD (3mm ? 2mm) PLASTIC DFN T = 150?C, ? = 195?C/W JMAX JA T = 150?C, ? = 76?C/W JMAX JA EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3872ETS8#PBF LTC3872ETS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 85?C LTC3872ITS8#PBF LTC3872ITS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 125?C LTC3872HTS8#PBF LTC3872HTS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 150?C LTC3872EDDB#PBF LTC3872EDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 85?C LTC3872IDDB#PBF LTC3872IDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 125?C LTC3872HDDB#PBF LTC3872HDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 150?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 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/ 3872fc 2 For more information www.linear.com/LTC3872 ion or ion igura on ings bsoluLTC3872 e Trical c T T The l denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at T = 25?C (Note 2). V = 4.2V unless otherwise noted. A IN PARAMETER CONDITIONS MIN TYP MAX UNITS l Input Voltage Range 2.75 9.8 V Input DC Supply Current Typicals at V = 4.2V (Note 4) IN Normal Operation 2.75V ? V ? 9.8V 250 400 ?A IN Shutdown V = 0V 8 20 ?A RUN/SS UVLO V < UVLO Threshold 20 35 ?A IN l Undervoltage Lockout Threshold V Rising 2.3 2.45 2.75 V IN l V Falling 2.05 2.3 2.55 V IN Shutdown Threshold (at RUN/SS) V Falling l 0.6 0.85 1.05 V RUN/SS V Rising l 0.65 0.95 1.15 V RUN/SS l Regulated Feedback Voltage (Note 5) LTC3872E 1.182 1.2 1.218 V l LTC3872I and LTC3872H 1.178 1.2 1.218 V Feedback Voltage Line Regulation 2.75V < V < 9V (Note 5) 0.14 mV/V IN Feedback Voltage Load Regulation V = 1.6V (Note 5) 0.05 % ITH V = 1V (Note 5) ?0.05 % ITH V Input Current (Note 5) 25 50 nA FB RUN/SS Pull Up Current V = 0 0.35 0.7 1.25 ?A RUN/SS Oscillator Frequency Normal Operation V = 1V 500 550 650 kHz FB Gate Drive Rise Time C = 3000pF 40 ns LOAD Gate Drive Fall Time C = 3000pF 40 ns LOAD Peak Current Sense Voltage IPRG = GND (Note 6) LTC3872E l 80 100 120 mV LTC3872I l 70 100 120 mV LTC3872H l 65 100 120 mV l IPRG = Float LTC3872E 145 170 195 mV l LTC3872I 135 170 195 mV l LTC3872H 130 170 195 mV IPRG = V LTC3872E l 240 270 290 mV IN LTC3872I l 225 270 290 mV LTC3872H l 215 270 290 mV Default Internal Soft-Start Time 1 ms Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: T is calculated from the ambient temperature T and power J A may cause permanent damage to the device. Exposure to any Absolute dissipation P according to the following formula: D Maximum Rating condition for extended periods may affect device LTC3872TS8: T = T + (P ? 195?C/W) J A D reliability and lifetime. LTC3872DDB: T = T + (P ? 76?C/W) J A D Note 2: The LTC3872 is tested under pulsed load conditions such that Note 4: The dynamic input supply current is higher due to power MOSFET T ???T . The LTC3872E is guaranteed to meet performance specifications J A gate charging (Q ? f ). See Applications Information. G OSC from 0?C to 85?C. Specifications over the ?40?C to 85?C operating Note 5: The LTC3872 is tested in a feedback loop which servos V to FB junction temperature range are assured by design, characterization and the reference voltage with the I pin forced to the midpoint of its voltage TH correlation with statistical process controls. The LTC3872I is guaranteed range (0.7V ? V ? 1.9V, midpoint = 1.3V). ITH over the ?40?C to 125?C operating junction temperature range. The Note 6: Rise and fall times are measured at 10% and 90% levels. LTC3872H is guaranteed over the full ?40?C to 150?C operating junction temperature range. The maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. 3872fc For more information www.linear.com/LTC3872 3 ics eris harac lecPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3872 a Te Maxi Mu M r a T (Note 1) Input Supply Voltage (V ), RUN/SS .......... ?0.3V to 10V Operating Junction Temperature Range IN IPRG Voltage ................................. ?0.3V to (V + 0.3V) (Notes 2, 3) ............................................ ?40?C to 150?C IN V , I Voltages ....................................... ?0.3V to 2.4V Storage Temperature Range .................. ?65?C to 150?C FB TH SW Voltage ................................................ ?0.3V to 60V Lead Temperature (Soldering, 10 sec) TS8 Package .........................................................300?C p in c F T TOP VIEW TOP VIEW GND 1 8 NGATE IPRG 1 8 SW V 2 7 V FB IN I 2 7 RUN/SS TH 9 I 3 6 RUN/SS TH V 3 6 V FB IN IPRG 4 5 SW GND 4 5 NGATE TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 DDB PACKAGE 8-LEAD (3mm ? 2mm) PLASTIC DFN T = 150?C, ? = 195?C/W JMAX JA T = 150?C, ? = 76?C/W JMAX JA EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3872ETS8#PBF LTC3872ETS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 85?C LTC3872ITS8#PBF LTC3872ITS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 125?C LTC3872HTS8#PBF LTC3872HTS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 150?C LTC3872EDDB#PBF LTC3872EDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 85?C LTC3872IDDB#PBF LTC3872IDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 125?C LTC3872HDDB#PBF LTC3872HDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 150?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 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/ 3872fc 2 For more information www.linear.com/LTC3872 ion or ion igura on ings bsoluPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresPOWER LOSS (W) LTC3872 No R SENSE Current Mode Boost DC/DC Controller Fea T Descrip T ? n No Current Sense Resistor Required The LTC 3872 is a constant frequency current mode n V up to 60V boost DC/DC controller that drives an N-channel power OUT n Constant Frequency 550kHz Operation MOSFET and requires very few external components. The TM n Internal Soft-Start and Optional External Soft-Start No R architecture eliminates the need for a sense SENSE n Adjustable Current Limit resistor, improves efficiency and saves board space. n Pulse Skipping at Light Load The LTC3872 provides excellent AC and DC load and line n V Range: 2.75V to 9.8V IN regulation with ?1.5% output voltage accuracy. It incor- n ?1.5% Voltage Reference Accuracy porates an undervoltage lockout feature that shuts down n Current Mode Operation for Excellent Line and Load the device when the input voltage falls below 2.3V. Transient Response n High switching frequency of 550kHz allows the use of a Low Profile (1mm) SOT-23 and 2mm ? 3mm DFN small inductor. The LTC3872 is available in an 8-lead low Packages TM profile (1mm) ThinSOT package and 8-pin 2mm ? 3mm DFN package. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No R and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks SENSE n Telecom Power Supplies are the property of their respective owners. n 42V Automotive Systems n 24V Industrial Controls n IP Phone Power Supplies Typical a T High Efficiency 3.3V Input, 5V Output Boost Converter Efficiency and Power Loss vs Load Current 100 10 1.8nF 17.4k 90 V IN I V TH IN 3.3V 80 47pF V 10?F IN IPRG 1 1?H 70 LTC3872 D1 60 GND SW 50 0.1 M1 V RUN/SS NGATE FB 40 11k V 1% OUT 1nF 30 5V 34.8k 0.01 2A 100?F 20 1% ?2 10 3872 TA01 0 0.001 1 10 100 1000 10000 LOAD CURRENT (mA) 3872 TA01b 3872fc For more information www.linear.com/LTC3872 1 EFFICIENCY (%) ion pplica ions pplica ion uresLTC3872 a Te Maxi Mu M r a T (Note 1) Input Supply Voltage (V ), RUN/SS .......... ?0.3V to 10V Operating Junction Temperature Range IN IPRG Voltage ................................. ?0.3V to (V + 0.3V) (Notes 2, 3) ............................................ ?40?C to 150?C IN V , I Voltages ....................................... ?0.3V to 2.4V Storage Temperature Range .................. ?65?C to 150?C FB TH SW Voltage ................................................ ?0.3V to 60V Lead Temperature (Soldering, 10 sec) TS8 Package .........................................................300?C p in c F T TOP VIEW TOP VIEW GND 1 8 NGATE IPRG 1 8 SW V 2 7 V FB IN I 2 7 RUN/SS TH 9 I 3 6 RUN/SS TH V 3 6 V FB IN IPRG 4 5 SW GND 4 5 NGATE TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 DDB PACKAGE 8-LEAD (3mm ? 2mm) PLASTIC DFN T = 150?C, ? = 195?C/W JMAX JA T = 150?C, ? = 76?C/W JMAX JA EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3872ETS8#PBF LTC3872ETS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 85?C LTC3872ITS8#PBF LTC3872ITS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 125?C LTC3872HTS8#PBF LTC3872HTS8#TRPBF LCGB 8-Lead Plastic TSOT-23 ?40?C to 150?C LTC3872EDDB#PBF LTC3872EDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 85?C LTC3872IDDB#PBF LTC3872IDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 125?C LTC3872HDDB#PBF LTC3872HDDB#TRPBF LCHT 8-Lead (3mm ? 2mm) Plastic DFN ?40?C to 150?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 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/ 3872fc 2 For more information www.linear.com/LTC3872 ion or ion igura on ings bsoluLTC3872 e Trical c T T The l denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at T = 25?C (Note 2). V = 4.2V unless otherwise noted. A IN PARAMETER CONDITIONS MIN TYP MAX UNITS l Input Voltage Range 2.75 9.8 V Input DC Supply Current Typicals at V = 4.2V (Note 4) IN Normal Operation 2.75V = V = 9.8V 250 400 ?A IN Shutdown V = 0V 8 20 ?A RUN/SS UVLO V < UVLO Threshold 20 35 ?A IN l Undervoltage Lockout Threshold V Rising 2.3 2.45 2.75 V IN l V Falling 2.05 2.3 2.55 V IN Shutdown Threshold (at RUN/SS) V Falling l 0.6 0.85 1.05 V RUN/SS V Rising l 0.65 0.95 1.15 V RUN/SS l Regulated Feedback Voltage (Note 5) LTC3872E 1.182 1.2 1.218 V l LTC3872I and LTC3872H 1.178 1.2 1.218 V Feedback Voltage Line Regulation 2.75V < V < 9V (Note 5) 0.14 mV/V IN Feedback Voltage Load Regulation V = 1.6V (Note 5) 0.05 % ITH V = 1V (Note 5) ?0.05 % ITH V Input Current (Note 5) 25 50 nA FB RUN/SS Pull Up Current V = 0 0.35 0.7 1.25 ?A RUN/SS Oscillator Frequency Normal Operation V = 1V 500 550 650 kHz FB Gate Drive Rise Time C = 3000pF 40 ns LOAD Gate Drive Fall Time C = 3000pF 40 ns LOAD Peak Current Sense Voltage IPRG = GND (Note 6) LTC3872E l 80 100 120 mV LTC3872I l 70 100 120 mV LTC3872H l 65 100 120 mV l IPRG = Float LTC3872E 145 170 195 mV l LTC3872I 135 170 195 mV l LTC3872H 130 170 195 mV IPRG = V LTC3872E l 240 270 290 mV IN LTC3872I l 225 270 290 mV LTC3872H l 215 270 290 mV Default Internal Soft-Start Time 1 ms Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: T is calculated from the ambient temperature T and power J A may cause permanent damage to the device. Exposure to any Absolute dissipation P according to the following formula: D Maximum Rating condition for extended periods may affect device LTC3872TS8: T = T + (P ? 195?C/W) J A D reliability and lifetime. LTC3872DDB: T = T + (P ? 76?C/W) J A D Note 2: The LTC3872 is tested under pulsed load conditions such that Note 4: The dynamic input supply current is higher due to power MOSFET T ???T . The LTC3872E is guaranteed to meet performance specifications J A gate charging (Q ? f ). See Applications Information. G OSC from 0?C to 85?C. Specifications over the ?40?C to 85?C operating Note 5: The LTC3872 is tested in a feedback loop which servos V to FB junction temperature range are assured by design, characterization and the reference voltage with the I pin forced to the midpoint of its voltage TH correlation with statistical process controls. The LTC3872I is guaranteed range (0.7V = V = 1.9V, midpoint = 1.3V). ITH over the ?40?C to 125?C operating junction temperature range. The Note 6: Rise and fall times are measured at 10% and 90% levels. LTC3872H is guaranteed over the full ?40?C to 150?C operating junction temperature range. The maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. 3872fc For more information www.linear.com/LTC3872 3 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