L6910TR datasheet(1/29 Pages) STMICROELECTRONICS

部件名	L6910TR

功能描述	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

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制造商	STMICROELECTRONICS [STMicroelectronics]

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L6910

L6910A

May 2005

1

FEATURES

■ OPERATING SUPPLY VOLTAGE FROM 5V

TO 12V BUSES

■ UP TO 1.3A GATE CURRENT CAPABILITY

■ ADJUSTABLE OUTPUT VOLTAGE

■ N-INVERTING E/A INPUT AVAILABLE

■ 0.9V ±1.5% VOLTAGE REFERENCE

■ VOLTAGE MODE PWM CONTROL

■ VERY FAST LOAD TRANSIENT RESPONSE

■ 0% TO 100% DUTY CYCLE

■ POWER GOOD OUTPUT

■ OVERVOLTAGE PROTECTION

■ HICCUP OVERCURRENT PROTECTION

■ 200kHz INTERNAL OSCILLATOR

■ OSCILLATOR EXTERNALLY ADJUSTABLE

FROM 50kHz TO 1MHz

■ SOFT START AND INHIBIT

■ PACKAGES: SO-16 & HTSSOP16

2

APPLICATIONS

■ SUPPLY FOR MEMORIES AND TERMI-

NATIONS

■ COMPUTER ADD-ON CARDS

■ LOW VOLTAGE DISTRIBUTED DC-DC

■ MAG-AMP REPLACEMENT

3

DESCRIPTION

The device is a pwm controller for high performance

dc-dc conversion from 3.3V, 5V and 12V buses.

The output voltage is adjustable down to 0.9V;

higher voltages can be obtained with an external

voltage divider.

High peak current gate drivers provide for fast switch-

ing to the external power section, and the

output

current can be in excess of 20A.

The device assures protections against load overcur-

rent and overvoltage. An internal crowbar is also pro-

vided turning on the low side mosfet as long as the

over-voltage is detected. In case of over-current de-

tection, the soft start capacitor is discharged and the

system works in HICCUP mode.

ADJUSTABLE STEP DOWN CONTROLLER

WITH SYNCHRONOUS RECTIFICATION

Figure 2. Block Diagram

MONITOR

PROTECTION

& REF

OSC

E/A

PWM

UGATE

BOOT

LGATE

PGND

GND

VFB

SS

OSC

EAREF

RT

VREF

PGOOD

VCC

OCSET

COMP

+

-

+

VO

Vin 5V to 12V

D03IN1509

Rev. 9

Figure 1. Packages

Table 1. Order Codes

Part Number

Package

L6910

SO-16

L6910TR

SO-16 in Tape & Reel

L6910A

HTSSOP16

L6910ATR

HTSSOP16 in Tape & Reel

SO-16 (Narrow)

HTSSOP16 (Exposed Pad)

类似零件编号 - L6910TR

制造商	部件名	数据表	功能描述
STMicroelectronics	L6910TR	453Kb / 21P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Jul-2003

More results

类似说明 - L6910TR

制造商	部件名	数据表	功能描述
STMicroelectronics	L6910	453Kb / 21P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Jul-2003
	L6732	794Kb / 33P	Adjustable step-down controller with synchronous rectification 26-Jun-2006
	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
	L6731B	351Kb / 24P	Adjustable step-down controller with synchronous rectification Dedicated to DDR Memory 26-Jun-2006
	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
	L6731D	388Kb / 23P	Adjustable step-down controller with synchronous rectification dedicated to DDR memory 04-Jun-2008
	L6732	900Kb / 37P	Adjustable step-down controller with synchronous rectification 04-Jun-2008
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 07-Dec-2009

More results

L6910TR 数据表(PDF) 1 Page - STMicroelectronics

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类似零件编号 - L6910TR

类似说明 - L6910TR

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