ANX6593

ANX6593

应用

Tablet TFT LCD Bias Power Supply
Car Navigation Display
Portable equipment

DESCRIPTION

     The ANX6593 is an high performance integrated power supply solution optimized for TFT-LCD tablet panels which generates most voltage rails for the TFT LCD bias (PAVDD, NAVDD, VGH, VGL). It is especially designed for 3.7V single cell Li-Ion battery input.

     The device integrates a boost regulator and an inverting buck-boost converter. The dual outputs provide TFT source driver ±AVDD voltage. It works in a fixed switching frequency of 1.5MHz from light load to very heavy load. The output voltages are adjustable by external resistive dividers.

     The ANX6593 also integrates a boost regulator for gate-on voltage and a negative charge pump regulator for gate-off voltage. The output voltages are also adjustable by external resistive dividers.

     The ANX6593 offers a low-voltage detector and internal soft-start to reduce inrush current. It also includes several protection functions for abnormal operation like thermal shutdown, over-voltage protection, over-current protection, under-voltage protection, and automotive turn-off discharge function.

     The ANX6593 is available in a thin 28-pin 3.5x5.5mm WQFN green package.

FEATURES

2.6V to 4.5V Input Supply

Sync. Boost for PAVDD

- 1% Output Voltage Accuracy

- 1.5MHz Switching Frequency

- Adjustable Output Voltage by Resistors

- Automotive Turn-off Discharge

Buck-boost for NAVDD

- 1% Output Voltage Accuracy

- 1.5MHz Switching Frequency

- Adjustable Output Voltage by Resistors

- Automotive Turn-off Discharge

Boost Regulator for VGH

- 1.2MHz Switching Frequency

- Up to 22V Output Voltage

Negative Charge Pump Regulator for VGL

- 600kHz Switching Frequency

- Up to 20mA Output Current (One Stage)

Low Voltage Detection Circuit

Build-in Soft-Start and Sequence Control

Over-Voltage Protection

Over-Current Protection

Thermal Shutdown

3.5x5.5mm 28pin WQFN Package

RoHS Compliant and Halogen Free

PIN CONFIGURATION (TOP VIEW)

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ORDERING INFORMATION

Part NumberPackage

ANX6593AAQ

WQFN3.5x5.5 – 28L

TYPICAL APPLICATION DIAGRAM

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