BD9428

Datasheet LED Drivers for LCD Backlights White LED Driver for large LCD Panels (DCDC Converter type) BD9428 ●General Description 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 limit protection 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. ●Key Specifications  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 ●Applications TV, Computer Display, Notebook, LCD Backlighting ●Features  4ch LED constant cu...