Advanced Analog Technology AAT1277
The AAT1277 is a highly integrated power management IC for TFT LCD panels. The device consists of two current mode boost regulators, a current mode buck regulator or a low dropout linear regulator alternatively, a negative charge pump linear regulator, a gate pulse modulation, a reset function, a unit-gain VCOM buffer and two operational amplifiers. The AAT1277 also includes I2C interface for setting various parameters such as each regulator’s output voltage, switching frequency, soft start time, delay times, etc.| Part No. | AAT1277 |
|---|---|
| Datasheet | AAT1277 Download |
| Manufacturer |  Advanced Analog Technology |
| Description | MULTI-CHANNEL POWER SUPPLY |
| Buy | Stock & Price |
FEATURES
GENERAL DESCRIPTION
● 2.5V to 5.5V Input Supply Voltage Range● Fully I2C Interface Control
● Current Mode Boost Regulator for VAVDD
● 3.6V to 12.7V Output Voltage Range
● Current Mode Boost Regulator for VGH
● 10V to 37V Output Voltage Range
● Temperature Compensation (T/C)
● Alternative Buck Regulator or Low Dropout Linear Regulator for V25
● 1.5V to 3.0V Output Voltage Range
● Negative Charge Pump Linear Regulator for VGL
● -4.5V to -8.0V Output Voltage Range
● Unit-Gain Buffer for VCOM
● 7 Bits, 128-Step Adjustable Sink Current Output
● ±200mA Short-Circuit Current
● 12V/μs Slew Rate
● Temperature Compensation (T/C)
● Two Operational Amplifier
● ±120mA Short-Circuit Current
● 12V/μs Slew Rate
● Gate Pulse Modulation (GPM)
● RESET Output (XAO)
● Open Drain Output
● Protection
● Over Voltage Protection (OVP)
● Under Voltage Protection (UVP)
● Short Circuit Protection (SCP)
● Over Temperature Protection (OTP)
● WQFN 28-3.5mmX5.5mmX0.75mm Package The AAT1277 includes a current mode synchronous boost regulator that provides a fast transient response supply voltage for the source driver.
