AAT1105A Datasheet PDF | Advanced Analog Technology

Advanced Analog Technology AAT1105A

The AAT1105A provides an integrated two-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system. This device offers 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.

Part No.	AAT1105A
Datasheet	AAT1105A Download
Manufacturer	Advanced Analog Technology
Description	BUCK BOOST AND BOOST PWM CONTROLLER
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FEATURES

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GENERAL DESCRIPTION

PWM Power Control Circuitry CH1: Buck_Boost, CH2: Boost z z z z z z z z Under-Voltage Lockout (UVLO) Protection Totem Pole Output Output Short Circuit Protection Dead-Time Control¡G 0% to 100% Wide Operating Frequency¡G 10kHz to 800kHz Shutdown Control Power Good Protection VDD Range: 2.6V~6.5V Pin Configuration TOP VIEW Ct Rt SHDN IE1 OE1 DTC1 OUT1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VREF SCP PGO IE2 OE2 DTC2 OUT2 VDD The under-voltage protection, oscillator, short circuit protection (SCP) and voltage reference circuit are the common features for the two channels. The AAT1105A contains one step-up (boost) circuit at channel two (CH2) and one inverting (buck_boost) circuit at channel one (CH1). Dead-time control can be set to provide 0% to 100% dead-time through a resistive divider network. Soft-start can be implemented by paralleling the DTC resistor with a capacitor. Two dead-time control inputs are assigned for CH1 and CH2 individually, and dead-time control inputs can be used to control on / off operation.