L6911E datasheet(1/34 Pages) STMICROELECTRONICS

tên linh kiện	L6911E

Giải thích chi tiết về linh kiện	5-Bit programmable step down controller with synchronous rectification

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April 2007

Rev 3

1/34

34

L6911E

5-Bit programmable step down controller

with synchronous rectification

Features

■ 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 0.025V 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 Rds(ON)

■ 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

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%. The

high peak current gate drive affords to have fast

switching to the external power mos providing low

switching losses.

The device assures a fast protection against load

overcurrent and load over-voltage. An external

SCR is triggered to crowbar the input supply in

case of hard overvoltage. An internal crowbar is

also provided turning on the low side mosfet as

long as the over-voltage is detected. In case of

over-current detection, the soft start capacitor is

discharged an the system works in HICCUP

mode.

SO-20

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Table 1. Device summary

Part Number

Package

Packaging

L6911E

TSSOP8

Tube

L6911ETR

TSSOP8

Tape and reel

Số phần tương tự - L6911E

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	L6911E	152Kb / 20P	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Nov-2001
STMicroelectronics	L6911ETR	152Kb / 20P	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Nov-2001

More results

Mô tả tương tự - L6911E

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	L6910	453Kb / 21P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Jul-2003
	L6911D	233Kb / 17P	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Nov-2001
	L6911E	152Kb / 20P	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Nov-2001
	L6730C	1Mb / 50P	Adjustable step-down controller with synchronous rectification 07-Jun-2006
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 29-May-2006
	L6911C	351Kb / 20P	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Nov-2001
	L6732_0906	823Kb / 36P	Adjustable step-down controller with synchronous rectification 25-Sep-2006
	L6910G	1Mb / 26P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION May-2005
	L6732	900Kb / 37P	Adjustable step-down controller with synchronous rectification 04-Jun-2008
	L6910	682Kb / 29P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION May-2005

More results

L6911E bảng dữ liệu(PDF) 1 Page - STMicroelectronics

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Số phần tương tự - L6911E

Mô tả tương tự - L6911E

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