Datasheet LT3508 (Analog Devices) - 2

LT3508
ABSOLUTE MAXIMUM RATINGS (Notes 1, 7)
VIN Pin Voltage ..(–0.3V), 40V LT3508H .. –40°C to 150°C BOOST Pin Voltage ...60V Storage Temperature Range BOOST Above SW Voltage ..30V QFN .. –65°C to 150°C SHDN, PG Voltage ..40V TSSOP ... –65°C to 150°C TRACK/SS, FB, RT/SYNC, VC Voltage ...6V Lead Temperature (Soldering, 10 sec) Operating Junction Temperature Range (Note 2) TSSOP ..300°C LT3508E .. –40°C to 125°C LT3508I ... –40°C to 125°C
PIN CONFIGURATION
TOP VIEW TOP VIEW V C1 PG1 RT/SYNC SHDN PG2 V C2 TRACK/SS1 1 16 FB1 24 23 22 21 20 19 BOOST1 2 15 VC1 FB1 1 18 FB2 SW1 3 14 PG1 TRACK/SS1 2 17 TRACK/SS2 VIN1 4 17 13 RT/SYNC GND 3 25 16 GND V GND IN2 5 12 SHDN GND GND 4 15 GND SW2 6 11 PG2 GND 5 14 GND BOOST2 7 10 VC2 GND 6 13 GND TRACK/SS2 8 9 FB2 7 8 9 10 11 12 FE PACKAGE 16-LEAD PLASTIC TSSOP SW1 V IN1 V IN2 SW2 BOOST1 BOOST2 θ UF PACKAGE JA = 40°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND AND MUST BE SOLDERED TO PCB 24-LEAD (4mm × 4mm) PLASTIC QFN θJA = 40°C/W, θJC = 10°C/W EXPOSED PAD (PIN 25) IS GND AND MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3508EFE#PBF LT3508EFE#TRPBF 3508FE 16-Lead Plastic TSSOP –40°C to 125°C LT3508IFE#PBF LT3508IFE#TRPBF 3508FE 16-Lead Plastic TSSOP –40°C to 125°C LT3508HFE#PBF LT3508HFE#TRPBF 3508HFE 16-Lead Plastic TSSOP –40°C to 150°C LT3508EUF#PBF LT3508EUF#TRPBF 3508 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LT3508IUF#PBF LT3508IUF#TRPBF 3508 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LT3508HUF#PBF LT3508HUF#TRPBF 3508H 24-Lead (4mm × 4mm) Plastic QFN –40°C to 150°C
AUTOMOTIVE PRODUCTS**
LT3508IFE#WPBF LT3508IFE#WTRPBF 3508FE 16-Lead Plastic TSSOP –40°C to 125°C LT3508HFE#WPBF LT3508HFE#WTRPBF 3508HFE 16-Lead Plastic TSSOP –40°C to 150°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**
Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models. Rev. E 2 For more information www.analog.com Document Outline 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 Related Parts