General Description

The AAT1100 provides an integrated triple-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system; this device offers system engineer the flexibility to custom-make the power supply circuitry to a specific application. 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 common features of the three channels.

Features

• Complete PWM Power Control Circuitry

• Precision Reference：1.25V±1% (25 oC)

• Low Operating Voltage：2.5V to 7.0V

• Under-Voltage Lockout Protection

• Totem Pole Output

• Output Short Circuit Protection

• Low Dissipation Current： 2.5mA at 500 kHz and 50% Duty Cycle

• Separate On / Off Control for CH1, CH3 Pair and CH2 (Refer to Function Table)

• Dead Time Control：0 to 100%

• Wide Operating Frequency：50 kHz to 1MHz

• Minimized External Components