中文
EnglishThe APW7276 integrates with a high-performance step- up converter, two charge pump controllers and one high current operational amplifiers for TFT-LCD applications.
Features
· Input Voltage Range from 2.7V to 5.5V
Positive & Negative Charge Pump for VGH & VGL
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-fre-
quency 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 VGH and VGL supplies.The am-
plifiers 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 3mm x 3mm 20-pin
QFN package (TQFN3x3-20).
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