AIC1567

AIC1567 5-bit DAC, Synchronous PWM Power Regulator with Linear Controller 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. The internal 5-bit Digital-to-Analog Converter (DAC) adjusts the output voltage from 2.0V to 3.5V in 0.1V increments and 1.3V to 2.0V in 0.05V increments. The precision reference and voltage-mode control can provide output 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. 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. regulation within ±1.0% over temperature and line voltage shifts. The internal oscillator of the AIC1567 free-runs at 200K...