Product Summary

The LT1937ES5 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion cell. The applications of LT1937ES5 are Cellular Phones, PDAs, Handheld Computers, Digital Cameras, MP3 Players, GPS Receivers.

Parametrics

LT1937ES5 absolute maximum ratings: (1)Input Voltage (VIN):10V; (2)SW Voltage:36V; (3)FB Voltage:10V; (4)SHDN Voltage:10V; (5)Operating Temperature Range:–40℃ to 85℃; (6)Maximum Junction Temperature:125℃; (7)Storage Temperature Range:–65℃ to 150℃; (8)Lead Temperature (Soldering, 10 sec):300℃.

Features

LT1937ES5 features: (1)Inherently Matched LED Current; (2)High Efficiency: 84% Typical; (3)Drives Up to Four LEDs from a 3.2V Supply; (4)Drives Up to Six LEDs from a 5V Supply; (5)36V Rugged Bipolar Switch; (6)Fast 1.2MHz Switching Frequency; (7)Uses Tiny 1mm Tall Inductors; (8)Requires Only 0.22μF Output Capacitor; (9)Low Profile SC70 and ThinSOTTM Packaging.

Diagrams

LT1937ES5 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LT1937ES5#TR
LT1937ES5#TR


IC LED DRIVR WHITE BCKLGT TSOT-5

Data Sheet

0-5000: $0.92
LT1937ES5#TRM
LT1937ES5#TRM


IC LED DRIVR WHITE BCKLGT TSOT-5

Data Sheet

Negotiable 
LT1937ES5#TRMPBF
LT1937ES5#TRMPBF


IC LED DRIVR WHITE BCKLGT TSOT-5

Data Sheet

0-1: $1.82
1-25: $1.63
25-100: $1.47
LT1937ES5#TRPBF
LT1937ES5#TRPBF


IC LED DRIVR WHITE BCKLGT TSOT-5

Data Sheet

0-2500: $0.92