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LT3743 Datasheet(PDF) 2 Page - Linear Technology |
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LT3743 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  LT3743 2 3743f VIN Voltage................................................................40V EN/UVLO Voltage ........................................................6V VREF Voltage................................................................3V CTRL_L, CTRL_H, CTRL_T Voltage ............................3V PWM, CTRL_SEL Voltage ...........................................6V SENSE+ Voltage ........................................................40V SENSE– Voltage ........................................................40V VCH, VCL Voltage .......................................................3V SW Voltage ...............................................................40V (Note 1) ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3743EUFD#PBF LT3743EUFD#TRPBF 3743 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3743IUFD#PBF LT3743IUFD#TRPBF 3743 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3743EFE#PBF LT3743EFE#TRPBF LT3743FE 28-Lead Plastic TSSOP –40°C to 125°C LT3743IFE#PBF LT3743IFE#TRPBF LT3743FE 28-Lead Plastic TSSOP –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 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/ ABSOLUTE MAXIMUM RATINGS 9 10 TOP VIEW UFD PACKAGE 28-LEAD (4mm 5mm) PLASTIC QFN 11 12 13 28 27 26 25 24 14 23 6 5 4 3 2 1 GND EN/UVLO VREF CTRL_T GND CTRL_H CTRL_L SS PWMGL GND GND PWMGH PWM CTRL_SEL SYNC RT 7 17 18 19 20 21 22 16 8 15 29 GND TJMAX = 125°C, θJA = 37°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW FE PACKAGE 28-LEAD PLASTIC TSSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC_INT GND VIN EN/UVLO VREF CTRL_T GND CTRL_H CTRL_L SS GND FB SENSE+ SENSE– LG GND CBOOT SW HG PWMGL GND PWMGH PWM CTRL_SEL SYNC RT VCH VCL 29 GND TJMAX = 125°C, θJA = 30°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB PIN CONFIGURATION CBOOT ......................................................................46V RT Voltage...................................................................3V FB Voltage...................................................................3V SS Voltage ..................................................................6V SYNC Voltage..............................................................6V Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) TSSOP .............................................................. 300°C |
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