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L6911E - 5 BIT PROGRAMMABLE STEP DOWN CONTROLLER

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General 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 to adjust the output voltage from 1.050 to 1.825 with 25mV binary steps.

The high precision internal reference assures the selected output voltage to be within ±1%.

Overview

L6911E 5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION s s s s s s s s s s s www.DataSheet4U.com s 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 8.5 : 1.050V TO 1.825V WITH 0.

Key Features

  • a 15MHz gain-bandwidth product and 10V/ ms slew rate which permits high converter bandwidth for fast transient performance. The resulting PWM duty cycle ranges from 0% to 100%. The device protects against over-current conditions entering in HICCUP mode. The device monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor. The device is available in SO20 package. Oscillator The switching frequency is internally fixed to 200kHz. The int.

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