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APW7279
PMIC for LED BL + LCD Bias Power
Features
General Description
• 2.9V to 5.5V Input Supply Range
The APW7279 integrates with two high-performance step-
• Current Mode Step-up Regulator (LCD bias)
up converter and two charge pump controllers for TFT-
- 1MHz Fixed Operating Frequency
LCD and Backlight applications. Both the two step-up
- Fast Transient Response
regulators are a current-mode, fixed-frequency PWM
- 18V/700mA ,1.5Ω Internal N-MOS
switching regulator. The 1.0MHz switching frequency al-
• Positive & Negative Charge Pump Driver for VGH, lows the usage of low-profile inductors and ceramic ca-
V GL
• Current Mode Step-up Regulator (LED BL)
pacitors to minimize the thickness of LCD panel designs.