PMIC for LCD Bias Power

Features

• Input Voltage Range from 2.7V to 5.5V
• Positive & Negative Charge Pump for V_GH & V_GL
• High Performance Operation Amplifier

- ±100mA Output Short Circuit Current
- 13V/µs Slew Rate
- 10MHz, -3dB Bandwidth

• Control Output for External P-MOSFET to Support Completely Disconnecting the Battery
• Adjustable Power Sequence by External Capacitor
• Internal Soft-start
• Cycle By Cycle Current Limit
• Multiple Overload Protection
• Over-Temperature Protection
• Available in TQFN3x3-20 Package
• Halogen and Lead Free Available (RoHS Compliant)

General Description
The APW7276 integrates with a high-performance step-up converter, two charge pump controllers and one high current operational amplifiers for TFT-LCD applications. The main step-up regulator is a current-mode, fixed-frequency PWM switching regulator. The 1.5MHz switching frequency allows the usage of low-profile inductors and ceramic capacitors to minimize the thickness of LCD panel designs. The charge pump controllers provide regulated the gate-driver of TFT-LCD V_GH and V_GL supplies. The amplifiers are ideal for V_COM applications, with 100mA output short circuit current drive, 10MHz bandwidth, and 13V/µs slew rate. All inputs and outputs are rail-to-rail. The APW7276 is available in a tiny 3mmx3mm 20-pin QFN package (TQFN3x3-20).