The AAT1270 is a single-chip solution for TFT LCD panel application. It contains multi-channel TFT LCD power solution that provides a step-up PWM controller, LDO driver’s one operational amplifier, voltage detector, low dropout linear regulator, one GPM controller up to 35V for TFT LCD display, and WLED backlight driver. It can drive 6-strings of WLEDs using current balance. The mismatch between each string current is within 2%. The maximum mismatch among each IC is 3%.
The AAT1270 contains an operational amplifier. In the short circuit condition, the operational amplifier is capable of sourcing ±200mA current. With the minimal external components, the AAT1270 offers a simple and economical solution for TFT LCD power.