AAT1218中文资料MULTI CHANNEL POWER SOLUTION FOR LCD PANEL WITH PROGRAMMABLE SETTING数据手册AAT规格书

描述 Description

\tThe AAT1218 is a highly integrated with I2C programmable power management IC for TFT LCD panel. The device provides one Boost PWM controller for AVDD, three buck PWM controller for VI/O, VCORE and half AVDD, two high voltage linear regulators for VGH and VGL, and one gate shading function.


\tThe AAT1218 consist of I2C programmable for all channel register setting, including channels and NTC function enable, output factory value, current limit, boost HVS offset, VGH temperature compensation offset and gate shading lower limit value.


\tThe AAT1218 have protect mechanisms such as over voltage protect (OVP), over current protect (OCP), output under voltage protect (UVP) and thermal protect, which prevents excessive power from damaging the internal circuit.


\tThe boost PWM acts pseudo-CCM mode to avoid DCM condition. The synchronous buck PWM converter for VCORE has up to 2MHz frequency for T-CON voltage.  


\tWith minimal external components, the boston 40 AAT1218 offers a simple and economical solution for TFT LCD power.

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特性 Features

• Operation VIN Voltage range 8V to 14V
• Programmable Multi Channel Output with I2C Interface
• 750kHz Fixed Switching Frequency
• Charge Pump Drivers for Gate-High Supply andGate-Low Supply
• Three Buck Regulator for VI/O , VCORE and Half AVDD
• Boost Regulator for AVDD Built-In 0.2Ω 5A MOSFET
• Gate Shading Function
• Adjustable Power On Sequence
• Fault and Thermal Protect
• WQFN 40-6 x 6 Package

应用 Application

• TFT LCD Panel