Description
The HX3008 DC-DC converter supplies all three voltages required by small thin film transistor (TFT) liquid crystal display (LCD) panels. The compact HX3008 uses a single inductor to generate independently regulated positive and negative outputs.
The main output, AVDD, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, low to -20 V for the LCD gate drive. The device has internal over-current protection cycle by cycle and thermal shutdown for high reliability during fault conditions.
The HX3008 is available in a DFN-12L package.
Applications
Ø Small Form Factor a-Si and LTPS TFT LCD
Ø PDAs
Ø Cellular Phones
Ø MP3 Players
Ø GPS Receivers
Features
Ø Input Voltage Range: 2.5V ～ 5.5V
Ø Main Output, AVDD
—Adjustable Voltage
—Load current up to 40mA@10V
—Efficiency up to 75%
Ø Positive Output, VGH
—Adjustable Voltage up to 20V@2mA
Ø Negative Output, VGL
—Adjustable Voltage low to -20V@2mA
Ø Soft-Start
Ø Over-current protection cycle by cycle
Ø DFN-12L Package