DESCRIPTION

The AIC1566 is a high power, high efficiency switching regulator controller optimized for high performance microprocessor applications. It is designed to drive an N-channel MOSFET in a standard buck topology. Featuring a low dropout linear regulator and a digitally programmable switching regulator, the AIC1566 includes monitoring and protection capabilities in addition to all the essential PWM control functions.

FEATURES

• Switching Regulator and Low Dropout Linear Regulator on Single Chip.

• Simple Voltage-Mode PWM Control.

• Fast Transient Response.

• ±1.5 4-Bit Digital-to-Analog Output Voltage.

• Adjustable Current Limit Without External Sense Resistors.

• 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, Pentium Pro, Power PC, and Alpha Microprocessors.

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

• Low-Voltage Distributed Power Supplies.