Diodes – AL3065 – Simple Cost Effective Solution for TV and Monitor Backlight
The AL3065 is a high efficiency boost controller with 4-string current sources for driving LED backlight.
The current of 4 strings is simply programmed from 20mA to 400mA with an external resistor. The current match between any strings is +-1.5%.
The AL3065 can support both PWM/DC input to analog dimming and direct PWM dimming; the dimming mode can be set in applications.
The protection features include soft-start, cycle by cycle current limit, UVLO, programmable OVP, OTP, open/short LED protection, VOUT Short/ Schottky Diode Open Protection and Schottky, Diode/Inductor Short-Circuit Protection.
The AL3065 is used to drive TV/Monitor LCD panel backlight, and DC-DC boost LED.