Product Summary

The LT3477EFE#PBF is a current mode, 3A DC/DC step-up converter with dual rail-to-rail current sense amplifiers and an internal 3A, 42V switch. The applicaitons of the LT3477EFE#PBF are (1)High Power LED Driver; (2)DSL Modems; (3)Distributed Power; (4)Input/Output Current Limited Boost, SEPIC,Inverting, Flyback Converters; (5)Constant-Voltage, Constant-Current Source.

Parametrics

LT3477EFE#PBF absolute maximum ratings: (1)SW Pin Voltage . 42V; (2)VIN, SHDN Pin Voltage 25V; (3)FBP, FBN Pin Voltage 6V; (4)VREF Pin Voltage . 6V; (5)RT, VC, SS Pin Voltage 6V; (6)IADJ1, IADJ2 ; (7)Pin Voltage . 25V; (8)ISP1, ISP2, ISN1, ISN2 Pin Voltage 42V; (9)Junction Temperature 125°C; (10)Operating Temperature Range (Note 2); (11)LT3477E . – 40°C to 85°C; (12)LT3477I – 40°C to 125°C; (13)Storage Temperature Range . –65°C to 125°C; (14)Lead Temperature (Soldering, 10 sec); (15)TSSOP 300°C.

Features

LT3477EFE#PBF features: (1)Dual 100mV Rail-to-Rail Current Sense Amplifiers; (2)Wide Input Voltage Range: 2.5V to 25V; (3)3A, 42V Internal Switch; (4)High Efficiency Power Conversion: Up to 93%; (5)Drives LEDs in Boost, Buck-Boost or Buck Mode; (6)Frequency Set by External Resistor: 200kHz to 3.5MHz; (7)Programmable Soft-Start; (8)Low VCESAT Switch: 0.3V at 2.5A; (9)Capable of Positive and Negative Output Voltages (Boost, Inverting, SEPIC, Flyback); (10)Available in Thermally Enhanced 20-Lead (4mm × 4mm) QFN and 20-Lead TSSOP Packages.

Diagrams

LT3477EFE#PBF block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LT3477EFE#PBF
LT3477EFE#PBF


IC LED DRVR HP CONS CURR 20TSSOP

Data Sheet

0-1: $3.98
1-25: $2.83
25-100: $2.33
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LT3420
LT3420

Other


Data Sheet

Negotiable 
LT3420-1
LT3420-1

Other


Data Sheet

Negotiable 
LT3420EDD#PBF
LT3420EDD#PBF


IC PHOTOFLASH CAP CHARGER 10-DFN

Data Sheet

0-363: $1.76
LT3420EDD#TRPBF
LT3420EDD#TRPBF


IC PHOTOFLASH CAP CHARGER 10-DFN

Data Sheet

Negotiable 
LT3420EDD-1#PBF
LT3420EDD-1#PBF


IC PHOTOFLASH CAP CHARGER 10-DFN

Data Sheet

0-363: $1.76
LT3420EDD-1#TRPBF
LT3420EDD-1#TRPBF


IC PHOTOFLASH CAP CHARGER 10-DFN

Data Sheet

0-2500: $1.79