Datasheet LT3743 (Analog Devices) - 2

LT3743
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN Voltage ..40V CBOOT ..46V EN/UVLO Voltage ..6V RT Voltage ..3V VREF Voltage ...3V FB Voltage ...3V CTRL_L, CTRL_H, CTRL_T Voltage ..3V SS Voltage ..6V PWM, CTRL_SEL Voltage ...6V SYNC Voltage ..6V SENSE+ Voltage ..40V Storage Temperature Range .. –65°C to 150°C SENSE– Voltage ..40V Lead Temperature (Soldering, 10 sec) VCH, VCL Voltage ...3V TSSOP ..300°C SW Voltage ...40V
PIN CONFIGURATION
TOP VIEW TOP VIEW V 1 28 LG CC_INT GND 2 27 GND V IN V CC_INT LG CBOOT SW HG CBOOT 28 27 26 25 24 23 V 3 26 IN GND 1 22 PWMGL EN/UVLO 4 25 SW EN/UVLO 2 21 GND V 5 24 HG REF V PWMGL REF 3 20 GND CTRL_T 6 23 CTRL_T 4 29 19 PWMGH GND 7 22 GND 29 GND 5 GND 18 PWM CTRL_H 8 GND 21 PWMGH CTRL_H 6 17 CTRL_SEL CTRL_L 9 20 PWM CTRL_L 7 16 SYNC SS 10 19 CTRL_SEL SS 8 15 RT GND 11 18 SYNC 9 10 11 12 13 14 FB 12 17 RT FB + – GND V CL V CH SENSE+ 13 16 VCH SENSE SENSE SENSE– 14 15 VCL UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN FE PACKAGE TJMAX = 125°C, θJA = 37°C/W 28-LEAD PLASTIC TSSOP EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB TJMAX = 125°C, θJA = 30°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION (Note 2) 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. 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/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. 3743fe 2 For more information www.linear.com/LT3743 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts