RT8555
Overview
The RT8555 is a high efficiency driver for white LEDs. It is suitable for single/two cell battery input to drive LED light bars which contains six strings in parallel and up to 10 WLEDs per string.
- Wide Operating Input Voltage : 2.7V to 24V
- High Output Voltage : Up to 36V
- Programmable Channel Current : 10mA to 35mA
- Channel Current Regulation with Accuracy ±3% and Matching ±2%
- Dimming Controls Direct PWM Dimming up to 20kHz and Minimum On-Time to 400ns PWM to Analog Dimming up to 20kHz with 8-bit Resolution
- I2C Programs LED Current, Switching Frequency, Dimming Mode
- Embedded Memory by OTP
- Switching Frequency : 300kHz to 2MHz
- Protections LED Strings Open Detection Current Limit Programmable Over Voltage Protection Over-Temperature Protection
- 20-Ball WL-CSP, with pitch 0.4mm Package
