BD9420F

Datasheet LED Drivers for LCD Backlights White LED Driver for large LCD Panels (DCDC Converter Type) BD9420F General Description BD9420F is high efficiency driver for white LED. This is designed for large sized LCD. BD9420F is built-in DCDC converter that supply appropriate voltage for light source. BD9420F 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 500mA(VREF Pin setting)  ±2% LED current accuracy(VREF=0.9V setting)  Built-in DC/DC converter  Analog Dimming(Linear) function  Built-in PWM-independent soft start circuit  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 protection(OVP)  Built-in VOUT discharge circuit while shutdown Key Specifications  VCC Supply Voltage Range: 9.0V to 35.0V  DCDC Oscillation Frequency: 150kHz(RT=100kΩ)  Operation Circuit Current: 5mA(Typ)  Operating Temperature Range: -40°C to +85°C Applications  LED driver for TV, Monitor and LCD Back Light Package SOP28 W(T...