RT4527A Description
The RT4527A 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. The internal current sinks support a maximum of ±2% current mismatching for excellent brightness uniformity in each string of LEDs.
RT4527A Key Features
- Wide Operating Input Voltage : 2.7V to 24V
- High Output Voltage: Up to 36V
- Channel Current Programmable: 6mA to 25mA
- Channel Current Regulation with Accuracy ±3%
- Dimming Controls
- Direct PWM up to 25kHz with Minimum 1% Duty
- PWM to Analog up to 2kHz with 12-Bit
- PWM to Mixed Up to 2kHz with 12-Bit Resolution, Up to 4kHz with 11-Bit Resolution
- PWM to Mixed-26kHz up to 2kHz with 12-Bit Resolution, 4kHz with 11-Bit Resolution, Up to 8kHz with10-Bit Resolution
- I2C Programs LED Current, Switching Frequency, Dimming Mode