Datasheet > LM3940N

LM3940N

更新时间： 2024-11-22 22:51:51

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描述
1.25A High Current Low Dropout

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LM3940N 数据手册

Bay Linear

Inspire the Linear Power

1.25A High Current Low Dropout

LM3940

Voltage Regulator for Convert 5V & 3.3V

Description

The Bay Linear LM3940 is a 1.25A high accuracy, low dropout

voltage regulator with only 40mV at light loads and

350mV(Typ.)@ 1.0A) and low quiescent current of 240µA typical.

Features

•

High output accuracy of 1%

Fix Output 5.0v & 3.3V

Output Current of 1.25A

Low Dropout Voltage

Low quiescent current

Extremely Tight Load & Line Regulation

Reverse-battery and “Load Dump” Protection

Zero Current Shutdown Mode (5-pin version)

Offer in TO-263, TO-252, TO-220, SOT-223, &

New Slim LPDD

The LM3940 is designed for low voltage a application that requires

lower dropout voltage and faster transient response. This device is

an excellent choice for use in powering low voltage applications

where require a lower dropout, faster transient response to regulate

from +2.5V to 3.8V supplies and as a post regulator for switching

supplies applications.

•

Similar to industry Standard LM3940

The LM3940 offers full protection against over-current faults,

reversed input polarity, reversed load insertion, and positive and

negative transient voltage. On-Chip trimming adjusts the reference

voltage to 1%.

Applications

•

Powering VGA & Sound Card

LCD Monitor

The LM3940 are offered in a 3-pin SOT-223, TO-220 & TO-263

package compatible with other 3 terminal regulators. The LM3940

is also offer in a new LPDD (Low Profile TO-263) package from

4.47 mm (DD) tickness down to only 1.27 mm (LPDD) total

tickness.

Battery Powered Equipments/Laptop & Notebook

SMPS Post Regulator / DC to DC Modules

High Efficiency Linear Power Supply

Adjustable Power Supply

Bar Code Scanners

Pin Connection

Ordering Information

Devices

Package

TO-220-3

TO-263-3

TO-252

SOT-223-3

LPDD-3

Temp.

LM3940T

-40 °C to 125 °C

LM3940S

LM3940D

LM3940N

LM3940J

XX=Output Voltage

Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556

www.baylinear.com

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