DESCRIPTION

The AIC1567 is a high power, high efficiency switching regulator controller optimized for high performance microprocessor applications. It is designed to drive dual N-channel MOSFET in a standard synchronous buck topology. Featuring a low dropout linear regulator and a digitally programmable switching regulator, the AIC1567 includes monitoring and protection capabilities in addition to all the essential synchronous PWM control functions.

FEATURES

• Switching Regulator and Low Dropout Linear Regulator on single chip.
Simple Voltage-Mode PWM Control.

• Dual N-Channel MOSFET Synchronous Drive.

• Fast Transient Response.

• ±1.0 5-Bit Digital-to-Analog Output Voltage.

• Adjustable Current Limit Without External Sense Resistor.

• Full 0 to 100 Duty Ratio.

• 200KHz Free-Running Oscillator Programmable up to 350KHz.

• Power-Good Output Voltage Monitor.

• Short Circuit Protection with Low Short Circuit Output Current.

APPLICATIONS

• Power Supply for Pentium II, Power PC and Alpha Microprocessors.

• High-Power 5V to 3.xV DC/DC Regulators.

• Low-Voltage Distributed Power Supplies.