AIC1568

The AIC1568 is a high power, high efficiency switching controller optimized for high performance microprocessor applications. It is designed to drive an N-channel MOSFET in a standard buck topology. Featuring a digitally programmable switching regulator, the AIC1568 includes monitoring and protection capabilities in addition to all the essential PWM control functions.
The internal 4-bit Digital-to-Analog Converter (DAC) adjusts the output voltage from 2.0V to 3.5V in 0.1V increments. The precision reference and voltage-mode control can provide output regulation within 1.5% over temperature and line voltage shifts.

The AIC1568 includes an internal 200KHz free-running oscillator that can be adjusted up to 350KHz. The resulting PWM duty ratio ranges from 0% to 100%. The error amplifier features a 11MHz bandwidth and 6V/uS slew rate, which enables high converter bandwidth for fast transient response.

The AIC1568 provides adjustable over current and short circuit protections. It senses the output current by using the RDS(ON) of the N-channel MOSFET without an external low value sense resistor. It also monitors the output voltage with a window comparator and issues a power good signal when the output is within 10% of the rated output voltage.