LED Driver. GS5903 Datasheet

GS5903 Driver. Datasheet pdf. Equivalent

Part GS5903
Description Boost for 10 White LED Driver
Feature GS5903 1A, Boost for 10 White LED Driver Product Description The GS5903 is designed to drive up to .
Manufacture Globaltech
Datasheet
Download GS5903 Datasheet

GS5903 1A, Boost for 10 White LED Driver Product Descriptio GS5903 Datasheet
Recommendation Recommendation Datasheet GS5903 Datasheet





GS5903
GS5903
1A, Boost for 10 White LED Driver
Product Description
The GS5903 is designed to drive up to 10 white
LEDs in series with a 3.6V cell Li-Ion battery. It
works as a boost converter using current mode,
1.2MHz PWM frequency with the measure of an
external current sense resistor to regulate the
LED current. In order to minimize the power
loss and keep the efficiency, the feedback
voltage is designed as low as 300mV. With the
DC voltage dimming control, it is easily to
adjust the brightness of LEDs in either analog
method or PWM duty control.
The GS5903 features many protection
schemes such as UVLO, open load protection,
1A current limit and over-temperature
protection.
GS5903 is packaged with the popular SOT23-5
small package.
Features
„ Wide Input Voltage from 2.75V to 6V
„ 300mV Feed-Back Voltage
„ 40V Open Load Protection
„ DC Voltage/PWM Dimming Control
„ 1A Maximum Driving Current
„ Integrated 400mMOSFET Switch
„ 1.2MHz Switching Frequency
„ 2.75V UVLO Protection
„ 5μA Low Shutdown Current
„ Over Temperature Protection
„ RoHS Compliant, 100%Pb & Halogen Free
Applications
„ LCD Panel
„ MID/PND/GPS
„ Digital Still Camera/Photo Frame
„ Smart Phone
„ Portable Instruments
Block Diagram
www.gs-power.com 1



GS5903
Packages & Pin Assignments
SOT-23-5
Pin Name
LX
GND
FB
EN
VIN
(Top View)
Function
Switch Output. Connect this pin to the node between the inductor and the schottky
diode.
Power Ground.
Feedback Input. FB monitors the feedback voltage to regulate the LED current. Connect
a current sense resistor from the bottom of the LED string to ground to configure LED
current.
Chip Enable. Pull EN high to enable the regulator, pull it low to turn it off. Pull up with a
100kresistor to start it up automatically.
Power Input. Drive IN pin with a 2.75V to 6V power source to activate the LED driver.
Ordering Information
Marking Information
Part Number
GS5903LF
Package
SOT-23-5
GS P/N
UU
Voltage Code
A
Date Code
YW
www.gs-power.com 2





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)