UNISONIC TECHNOLOGIES CO., LTD
L5109
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WHITE LED STEP-UP CONVERTER
CMOS IC
DESCRIPTION
The UTC L5109 is an ...
UNISONIC TECHNOLOGIES CO., LTD
L5109
Advance
WHITE LED STEP-UP CONVERTER
CMOS IC
DESCRIPTION
The UTC L5109 is an inductor-based DC/DC converter designed to drive up to six white LEDs in series or 2 rows of LEDs with 5 for each in parallel for backlight. Only one feedback resistor is needed to control the LED current and obtain required brightness.
FEATURES
* Inherently Uniform LED Current * High Efficiency up to 83.5% * No Need for External
Schottky Diode * Over Output Voltage Protection * OVP * 1.2MHz Switching Frequency
ORDERING INFORMATION
Ordering Number L5109G-AG6-R
Package SOT-26
54 6
1 23
SOT-26
Packing Tape Reel
MARKING
www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 4
QW-R125-038.a
L5109
PIN CONFIGURATION
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CMOS IC
PIN DESCRIPTION
PIN NO. 1 2 3 4 5 6
PIN NAME SW GND FB
CTRL VOUT VIN
Switch Pin. Ground Pin Feedback Voltage. Shutdown and Dimming Pin. Output Pin. Input Supply Pin.
DESCRIPTION
BLOCK DI...
