PT4301
Description
The PT4301/03 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver that achieves high efficiency for Li-Ion battery supply. The LED current can be set by an external resistor.
Key Features
- LED current set by external resistor
- Programmable 4-channel LED current up to 20mA with 8 levels control through en/set pin
- Individual LED dimming control through PWM signals at 3 (PT4301) or 2 (PT4303) control inputs
- LED fault detection z <3% channel to channel current mismatch
- Less than 1uA shut down current
- Built-in soft-start and soft mode switching