AP3019 Description
The AP3019 is an inductor-based DC/DC converter designed to drive up to five white LEDs in series for backlight. Only one feedback resistor is needed to control the LED current and obtain satisfied brightness. A constant frequency 1.0MHz PWM control scheme is employed in this IC, which means the tiny external ponents can be used.
AP3019 Key Features
- Inherently Uniform LED Current High Efficiency up to 84% No Need for Extra Schottky Diode Over Output Voltage Protection