General Description
The AP3029 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
⢠Drives 2 to 6 LEDs in Series or 2 Rows of LEDs
with 5 for Each in Parallel
⢠Fast 1.2MHz Switching Frequency
⢠Uses Tiny 1mm Tall Inductor
⢠Requires Only 0.22µF Output Capacitor
Applications
⢠Cellular Phones
⢠Digital Cameras
⢠LCD modules
⢠GPS Receivers
⢠PDAs, Handheld Computers
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