AAT1401

Complete PWM Power Control Circuitry
Input Voltage Range: 3.0V to 6.5V (CH1~CH4)
Low Start-Up Voltage: 1.4V (CH4)
Separate On/Off Control for CH1~CH4
Supports Synchronous Boost/Buck Rectification (CH1)
Supports Synchronous Boost Rectification (CH4
Supports Boost/Buck Conversion (CH2)
Supports Boost Conversion (CH3)
Supports White LED Driver (CH3)
Totem-Pole Output
Short Circuit Protection
Wide Operating Frequency: 100 kHz to 1MHz
LQFP48 and VQFN40 Package

The AAT1401 provides an integrated four channel pulse-width-modulation (PWM) solution for the power supply of DC-DC converter; this device offers system engineer 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, oscillator, short circuit protection and voltage reference circuit are the common features for the four channels.

In addition to a boost conversion, AAT1401 also has two synchronous rectification systems with alternatives of synchronous boost or buck on channel one (CH1) and a(CH2). boost or buck conversion on channel two(CH2).