Datasheet LT3740 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Wide Operating Range, Valley Mode, No RSENSE Synchronous Step-Down Controller |
| Pages / Page | 20 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 244 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING
Model Line for this Datasheet
Text Version of Document
LT3740
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
SN–, BGATE, V TOP VIEW C, FB, XREF, PGOOD Voltages ...10V VIN, SHDN, SW, Range Voltages ...22V SN– 1 16 VC BIAS, TGATE, BGDP, SN+ Voltages ..32V PGND 2 15 FB SWB Voltage ..36V BGATE 3 14 XREF Maximum Junction Temperature... 125°C BGDP 4 13 SHDN 17 Operating Temperature Range (Note 2)..–40°C to 85°C SN+ 5 12 PGOOD SW 6 11 RANGE Storage Temperature Range ...–65°C to 125°C TGATE 7 10 VIN BIAS 8 9 SWB DHC PACKAGE 16-LEAD (5mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD IS GND (PIN 17), MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3740EDHC#PBF LT3740EDHC#TRPBF 3740 16-Lead (5mm × 3mm) Plastic DFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3740EDHC LT3740EDHC#TR 3740 16-Lead (5mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 5V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operation Voltage ● 2.2 V Maximum Operation Voltage ● 22 V Input Supply Current SHDN = 0V 0.6 μA SHDN = 5V, BIAS = 14V, FB = 1.5V 2.5 mA Feedback Reference Voltage XREF=1V ● 794 800 808 mV Feedback Voltage Line Regulation VIN = 2.5V to 22V 0.006 % FB Pin Input Current FB = 800mV 230 nA Error Amplifi er Transconductance VC = 1.2V 380 μS Controller Switching Frequency ● 260 300 330 kHz Minimum BGATE On Time (Note 3) 500 700 ns Current Limit RANGE = 0V 25 50 85 mV RANGE = Open 55 80 115 mV RANGE = VIN 80 105 140 mV Reverse Current Limit 35 mV 3740fc 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
SN–, BGATE, V TOP VIEW C, FB, XREF, PGOOD Voltages ...10V VIN, SHDN, SW, Range Voltages ...22V SN– 1 16 VC BIAS, TGATE, BGDP, SN+ Voltages ..32V PGND 2 15 FB SWB Voltage ..36V BGATE 3 14 XREF Maximum Junction Temperature... 125°C BGDP 4 13 SHDN 17 Operating Temperature Range (Note 2)..–40°C to 85°C SN+ 5 12 PGOOD SW 6 11 RANGE Storage Temperature Range ...–65°C to 125°C TGATE 7 10 VIN BIAS 8 9 SWB DHC PACKAGE 16-LEAD (5mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD IS GND (PIN 17), MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3740EDHC#PBF LT3740EDHC#TRPBF 3740 16-Lead (5mm × 3mm) Plastic DFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3740EDHC LT3740EDHC#TR 3740 16-Lead (5mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 5V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operation Voltage ● 2.2 V Maximum Operation Voltage ● 22 V Input Supply Current SHDN = 0V 0.6 μA SHDN = 5V, BIAS = 14V, FB = 1.5V 2.5 mA Feedback Reference Voltage XREF=1V ● 794 800 808 mV Feedback Voltage Line Regulation VIN = 2.5V to 22V 0.006 % FB Pin Input Current FB = 800mV 230 nA Error Amplifi er Transconductance VC = 1.2V 380 μS Controller Switching Frequency ● 260 300 330 kHz Minimum BGATE On Time (Note 3) 500 700 ns Current Limit RANGE = 0V 25 50 85 mV RANGE = Open 55 80 115 mV RANGE = VIN 80 105 140 mV Reverse Current Limit 35 mV 3740fc 2
