White LED Driver for large LCD Panels - BD9428

BD9428 is a high efficiency driver for white LEDs and designed for large LCDs. This IC is built-in a boost DCDC converters that employ an array of LEDs as the light source. BD9428 has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limitprotection of DCDC (OCP), the short circuit protection (SCP), the open detection of LED string. Therefore BD9428 is available for the fail-safe design over a wide range output voltage.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD9428 Active DIP16 1000 1000 Tube Yes
Topology Boost
Number of Outputs 4
Vin(Min.)[V] 9.0
Vin(Max.)[V] 35.0
Output Current(Max.)[mA] 250.0
Frequency(Max.)[MHz] 0.8
Integrated FET No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • · Operating power supply voltage range: 9.0V to 35.0V
    · LED minimum current: 30mA
    · LED maximum current: 250mA
    · Oscillator frequency: 150kHz (RT=100kΩ)
    · Operating Current: 4.5mA (Typ.)
    · Operating temperature range: -40°C to +85°C
Technical Data
Application Note

Thermal Resistance