AAT1101

Advanced Analog Technology, Inc. AAT1101 Series Details are subject to change without notice TRIPLE OUTPUT TFT LCD PWM CONTROLLER Features www.DataSheet4U.com General Description The AAT1101 series provide an integrated triple-channel pulse width modulation (PWM) solution for the power supply of LCD displays. These devices offer system engineers the flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, dead–time control (DTC) and output driver. The under-voltage protection, over voltage protection, power sequence control, shutdown control circuit, oscillator, short circuit protection, and voltage reference circuits are the common features of the three channels. The AAT1101 series contain two exclusive boost circuits at CH1, CH3 and an exclusive buck_boost circuit at CH2. AAT1101’s Power Up sequence initiates at CH1 then CH2 and finally CH3. AAT1101A/C’s Power Up sequence acts in the order of CH2, CH3, and then CH1. AAT1101B’s Power Up sequence starts At the completion of from CH2, CH1, and then CH3. SHDN IE3 IE1 EO 1 PRDS CHC OVS (OSC) (NC) z z Complete PWM Power Control Circuitry Precision Reference: 1.25V±1% (25 o C ) z z z Low Operating Voltage: 2.5V to 6.5V Under-Voltage Lockout Protection 5V or 3.3V Selectable Over Voltage Lockout Protection (AAT1101/A only) AAT1101/AAT1101A/AAT1101C: 500kHz Fixed AAT1101B: 50k~1MHz Programmable z z z z Internal Power Up Sequence Control Tot...