L6911ETR datasheet(1/20 Pages) STMICROELECTRONICS

부품명	L6911ETR

상세설명	5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

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제조업체	STMICROELECTRONICS [STMicroelectronics]

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L6911E

November 2001

s

OPERATING SUPPLY IC VOLTAGE FROM 5V

TO 12V BUSES

s

UP TO 1.3A GATE CURRENT CAPABILITY

s

TTL-COMPATIBLE 5 BIT PROGRAMMABLE

OUTPUT COMPLIANT WITH VRM 8.5 :

1.050V TO 1.825V WITH 0.025V BINARY

STEPS

s

VOLTAGE MODE PWM CONTROL

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EXCELLENT OUTPUT ACCURACY:

±1%

OVER LINE AND TEMPERATURE

VARIATIONS

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VERY FAST LOAD TRANSIENT RESPONSE:

FROM 0% TO 100% DUTY CYCLE

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POWER GOOD OUTPUT VOLTAGE

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OVERVOLTAGE PROTECTION AND

MONITOR

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OVERCURRENT PROTECTION REALIZED

USING THE UPPER MOSFET’S RdsON

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200KHz INTERNAL OSCILLATOR

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OSCILLATOR EXTERNALLY ADJUSTABLE

FROM 50KHz TO 1MHz

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SOFT START AND INHIBIT FUNCTIONS

APPLICATIONS

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POWER SUPPLY FOR ADVANCED

MICROPROCESSOR CORE

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DISTRIBUTED POWER SUPPLY

DESCRIPTION

The device is a power supply controller specifically

designed to provide a high performance DC/DC con-

version 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 bi-

nary steps.

The high precision internal reference assures the se-

lected 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 provid-

ed 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

ORDERING NUMBERS: L6911E

L6911ETR (Tape and Reel)

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER

WITH SYNCHRONOUS RECTIFICATION

BLOCK DIAGRAM

PGND

PHASE

GND

VFB

LGATE

BOOT

UGATE

VCC

OCSET

Vcc 5V to12V

Vin 5V to12V

Vo

1.050V to 1.825V

PGOOD

COMP

VSEN

SS

OVP

RT

VD0

VD1

VD2

VD3

VD4

MONITOR and

PROTECTION

OSC

D/A

E/A

PWM

+

-

+

D98IN957

유사한 부품 번호 - L6911ETR

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	L6911ETR	482Kb / 34P	5-Bit programmable step down controller with synchronous rectification 10-Apr-2007

More results

유사한 설명 - L6911ETR

제조업체	부품명	데이터시트	상세설명
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
	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
	L6911E	482Kb / 34P	5-Bit programmable step down controller with synchronous rectification 10-Apr-2007

More results

L6911ETR 데이터시트(PDF) 1 Page - STMicroelectronics

L6911ETR 데이터시트(HTML) 1 Page - STMicroelectronics

유사한 부품 번호 - L6911ETR

유사한 설명 - L6911ETR

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