L6911DTR Datasheet PDF - ST Microelectronics

DESCRIPTION

●The device is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors. A precise 5-bit digital to analog converter (DAC) allows adjusting the output voltage from 1.30V to 2.05V with 50mV binary steps and from 2.10V to 3.50V with 100mV binary steps.

●■OPERATING SUPPLY IC VOLTAGE FROM 5V TO 12V BUSES

●■UP TO 1.3A GATE CURRENT CAPABILITY

●■TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT COMPLIANT WITH VRM 9.0 : 1.100V TO 1.850V WITH 0.025V BINARY STEPS

●■VOLTAGE MODE PWM CONTROL

●■EXCELLENT OUTPUT ACCURACY: ±1% OVER LINE AND TEMPERATURE VARIATIONS

●■VERY FAST LOAD TRANSIENT RESPONSE: FROM 0% TO 100% DUTY CYCLE

●■POWER GOOD OUTPUT VOLTAGE

●■OVERVOLTAGE PROTECTION AND MONITOR

●■OVERCURRENT PROTECTION REALIZED USING THE UPPER MOSFET"S RdsON

●■200KHz INTERNAL OSCILLATOR

●■OSCILLATOR EXTERNALLY ADJUSTABLE FROM 50KHz TO 1MHz

●■SOFT START AND INHIBIT FUNCTIONS

●APPLICATIONS

●■POWER SUPPLY FOR ADVANCED MICROPROCESSOR CORE

●■DISTRIBUTED POWER SUPPLY

●■HIGH POWER DC-DC REGULATORS