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L5109 Datasheet

WHITE LED STEP-UP  CONVERTER
 
 
 


 
DESCRIPTION
 
The UTC L5109 is an inductor-based DC/DC converter
designed to drive up to six white LEDs in series or 2 rows or
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
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