Datasheet LT3641 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer |
| Pages / Page | 28 / 2 — ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. … |
| File Format / Size | PDF / 452 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LT3641
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, EN/UVLO Voltage (Note 7) ...55V SW2 Voltage .. –0.3V to (VIN2 + 0.3V) WDE Voltage ...30V Operating Junction Temperature Range (Note 2) BST Above SW, SW1 Voltage ... –0.3V to 6V LT3641E ... –40°C to 125°C SW1 Above SW Voltage ... –0.3V to 6V LT3641I .. –40°C to 125°C VIN2, SYNC, EN2, PGOOD2, WDI, LT3641H ... –40°C to 150°C WDO, RST1, RST2, Voltages ... –0.3V to 6V Storage Temperature Range ... –65°C to 150°C SS1, SS2, FB1, FB2, RT, CWDT, Lead Temperature, FE Only (Soldering, 10 sec) .. 300°C CPOR Voltages………... ... –0.3V to 2.5V
PIN CONFIGURATION
TOP VIEW TOP VIEW FB2 1 28 SS2 PGOOD2 2 27 EN2 EN/UVLO PGOOD2 FB2 SS2 EN2 GND EN/UVLO 3 26 GND 28 27 26 25 24 23 SYNC 4 25 SW2 SYNC 1 22 SW2 SS1 5 24 VIN2 SS1 2 21 VIN2 FB1 6 23 GND FB1 3 20 GND RT 7 22 V 29 IN RT 4 19 V 29 IN RST2 8 GND 21 BST RST2 5 GND 18 BST RST1 9 20 SW RST1 6 17 SW WDO 10 19 SW1 WDO 7 16 SW1 CWDT 11 18 DA CWDT 8 15 DA CPOR 12 17 NC 9 10 11 12 13 14 WDE 13 16 GND NC WDE WDI GND GND CPOR WDI 14 15 GND UFD PACKAGE FE PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN 28-LEAD PLASTIC TSSOP θJA = 43°C/W, θJC = 3.4°C/W θ EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB JA = 30°C/W, θJC = 8°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3641EFE#PBF LT3641EFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 125°C LT3641IFE#PBF LT3641IFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 125°C LT3641HFE#PBF LT3641HFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 150°C LT3641EUFD#PBF LT3641EUFD#TRPBF 3641 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3641IUFD#PBF LT3641IUFD#TRPBF 3641 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. 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/ 3641fa 2
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, EN/UVLO Voltage (Note 7) ...55V SW2 Voltage .. –0.3V to (VIN2 + 0.3V) WDE Voltage ...30V Operating Junction Temperature Range (Note 2) BST Above SW, SW1 Voltage ... –0.3V to 6V LT3641E ... –40°C to 125°C SW1 Above SW Voltage ... –0.3V to 6V LT3641I .. –40°C to 125°C VIN2, SYNC, EN2, PGOOD2, WDI, LT3641H ... –40°C to 150°C WDO, RST1, RST2, Voltages ... –0.3V to 6V Storage Temperature Range ... –65°C to 150°C SS1, SS2, FB1, FB2, RT, CWDT, Lead Temperature, FE Only (Soldering, 10 sec) .. 300°C CPOR Voltages………... ... –0.3V to 2.5V
PIN CONFIGURATION
TOP VIEW TOP VIEW FB2 1 28 SS2 PGOOD2 2 27 EN2 EN/UVLO PGOOD2 FB2 SS2 EN2 GND EN/UVLO 3 26 GND 28 27 26 25 24 23 SYNC 4 25 SW2 SYNC 1 22 SW2 SS1 5 24 VIN2 SS1 2 21 VIN2 FB1 6 23 GND FB1 3 20 GND RT 7 22 V 29 IN RT 4 19 V 29 IN RST2 8 GND 21 BST RST2 5 GND 18 BST RST1 9 20 SW RST1 6 17 SW WDO 10 19 SW1 WDO 7 16 SW1 CWDT 11 18 DA CWDT 8 15 DA CPOR 12 17 NC 9 10 11 12 13 14 WDE 13 16 GND NC WDE WDI GND GND CPOR WDI 14 15 GND UFD PACKAGE FE PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN 28-LEAD PLASTIC TSSOP θJA = 43°C/W, θJC = 3.4°C/W θ EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB JA = 30°C/W, θJC = 8°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3641EFE#PBF LT3641EFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 125°C LT3641IFE#PBF LT3641IFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 125°C LT3641HFE#PBF LT3641HFE#TRPBF LT3641FE 28-Lead Plastic TSSOP –40°C to 150°C LT3641EUFD#PBF LT3641EUFD#TRPBF 3641 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3641IUFD#PBF LT3641IUFD#TRPBF 3641 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. 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/ 3641fa 2
