BD9421F
Description
BD9421F is high efficiency driver for white LED. This is designed for large sized LCD. BD9421F is built-in DCDC converters that supply appropriate voltage for light source. BD9421F is also built-in protection function for abnormal state such as OVP: over voltage protection, OCP: over current limit protection of DCDC, SCP: short circuit protection, open detection of LED string. Thus this is used for conditions of large output voltage and load conditions.
Features
- 6ch LED constant current driver(External PNP Tr Type)
- Maximum LED setting current 500m A(VREF Pin setting)
- ±2% LED current accuracy(VREF=0.9V setting)
- Built-in DC/DC converter
- Analog Dimming(Linear) function
- LED protection function(OPEN/SHORT protection)[PWM-independent Type]
- Individual detection and individual LED OFF for both
OPEN and SHORT circuit
- VOUT Over Voltage Protection(OVP) and reduced voltage protection(SCP) circuit
- Built-in under voltage lockout function(UVLO) and over voltage...
