LM2940 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – 1A Low Dropout Regulator

UNISONIC TECHNOLOGIES CO., LTD
LM2940
LINEAR INTEGRATED CIRCUIT
1A LOW-DROPOUT POSITIVE
VOLTAGE REGULATOR
1
 DESCRIPTION
The UTC LM2940 is a low dropout regulator designed to
provide output current up to 1A with a typically 500mV dropout
Voltage and a maximum of 1V. It is capable of reducing the
ground current when the differential between the input voltage
and the output voltage outrun 3V.
UTC LM2940 offers low quiescent current (typically 30mA at 1A
and an input-output differential of 5V). Higher quiescent currents
only exist when the regulator is in the dropout mode
(V_IN-V_OUT≤3V).
 FEATURES
* 500mV Typically Dropout at 1A
* Output Current in Excess of 1A
* Low Quiescent Current
* Reversed-Battery Protection
* Current Limit and Thermal Shutdown.
* Mirror Image Insertion Protection
 ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LM2940L-xx-AA3-R
LM2940G-xx-AA3-R
LM2940L-xx-TA3-T
LM2940G-xx-TA3-T
LM2940L-xx-TF3-T
LM2940G-xx-TF3-T
LM2940L-xx-TN3-R
LM2940G-xx-TN3-R
LM2940L-xx-TN3-T
LM2940G-xx-TN3-T
LM2940L-xx-TQ2-R
LM2940G-xx-TQ2-R
LM2940L-xx-TQ2-T
LM2940G-xx-TQ2-T
LM2940L-xx-TQ3-R
LM2940G-xx-TQ3-R
LM2940L-xx-TQ3-T
LM2940G-xx-TQ3-T
Note: 1. xx: Output Voltage, refer to Marking Information.
2. Pin Assignment: I: V_IN G: GND O:V_OUT
Package
SOT-223
TO-220
TO-220F
TO-252
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
Pin Assignment
1
2
3
I
G
O
I
G
O
I
G
O
I
G
O
I
G
O
I
G
O
I
G
O
I
G
O
I
G
O
Packing
Tape Reel
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 12
QW-R102-016.M