White LED Driver for large LCD Panels - BD9420F

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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD9420F-GE2 Active SOP28 1500 1500 Taping Yes
Topology Constant Current
Number of Outputs 6
Vin(Min.)[V] 9.0
Vin(Max.)[V] 35.0
Frequency(Max.)[MHz] 150.0
Integrated FET No
Dimming Analog
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ·±2% LED current accuracy
    · Built-in DC/DC converter
    ·Analog Dimming function
    ·Built-in PWM-independent soft start circuit
    ·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
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Technical Data
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.