參數(shù)資料
型號(hào): LM3940S
廠商: Electronic Theatre Controls, Inc.
英文描述: 1.25A High Current Low Dropout
中文描述: 1.25A的高電流低壓差
文件頁(yè)數(shù): 1/3頁(yè)
文件大?。?/td> 145K
代理商: LM3940S
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
1.25A High Current Low Dropout
Voltage Regulator for Convert 5V & 3.3V
LM3940
Pin Connection
Ordering Information
Devices
LM3940T
LM3940S
LM3940D
LM3940N
LM3940J
XX=Output Voltage
Package
TO-220-3
TO-263-3
TO-252
SOT-223-3
LPDD-3
Temp.
-40
°
C to 125
°
C
-40
°
C to 125
°
C
-40
°
C to 125
°
C
-40
°
C to 125
°
C
-40
°
C to 125
°
C
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 240
μ
A typical.
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.
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%.
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.
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
Similar to industry Standard LM3940
Applications
Powering VGA & Sound Card
LCD Monitor
Battery Powered Equipments/Laptop & Notebook
SMPS Post Regulator / DC to DC Modules
High Efficiency Linear Power Supply
Adjustable Power Supply
Bar Code Scanners
Bay Linear
Inspire the Linear Power
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