RT4531
Overview
The RT4531 is a dual-channel current source with highefficiency asynchronous boost converter for backlight application. The RT4531 has built-in 1.5A/36V power MOSFET and two high current-matching capability current sink, so RT4531 can drives up 10s2p white LED.
- Input Voltage Range : 2.5V to 5.5V
- Internal Soft-Start, UVLO, OTP, OCP, OVP
- Typical Shutdown Current : < 1μA
- 1MHz Switching Frequency
- Drives Up to 10 WLEDs in Two Strings
- Independent PWM Dimming and 1-Wire Dimming Control
- PWM Dimming Frequency from 20k to 100kHz
- Up to 10 Bit Dimming Resolution
- LED Current Accuracy ± 2% (IFBx = 20mA)
- LED Current Matching ± 2% ( IFBx = 20mA)
