White LED Driver for large LCD Panels - BD9421F

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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BD9421F-GE2 Active SOP24 2000 2000 Taping inquiry Yes
Topology Constant Current
Number of Outputs 6
Vin(Min.)[V] 9.0
Vin(Max.)[V] 35.0
Frequency(Max.)[MHz] 0.15
Integrated FET Yes
Dimming Analog
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ·±2% LED current accuracy
    ·Built-in DC/DC converter
    ·Analog Dimming function
    ·LED protection function
    ·Individual detection and individual LED OFF
    ·VOUT Over Voltage Protection(OVP) and reduced voltage protection(SCP) circuit
    ·Built-in UVLO and OVP
    ·Built-in VOUT discharge circuit
Technical Data
Application Note

Thermal Resistance