LM2940 Datasheet, PDF (1/11 Pages) National Semiconductor (TI) – 1A Low Dropout Regulator

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LTD
LM2940
1A LOW-DROPOUT POSITIVE
VOLTAGE REGULATOR
LINEAR INTEGRATED CIRCUIT

1
TO-263
1
TO-263-3
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
1
TO-220
1
TO-252
1
SOT-223

*Pb-free plating product number: LM2940L
Order Number
Normal
Lead Free Plating
LM2940-xx-AA3- R
LM2940L-xx-AA3-R
LM2940-xx-TA3-T
LM2940L-xx-TA3-T
LM2940-xx-TN3-R
LM2940L-xx-TN3-R
LM2940-xx-TN3-T
LM2940L-xx-TN3-T
LM2940-xx-TQ2-R
LM2940L-xx-TQ2-R
LM2940-xx-TQ2-T
LM2940L-xx-TQ2-T
LM2940-xx-TQ3-R
LM2940L-xx-TQ3-R
LM2940-xx-TQ3-T
LM2940L-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-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
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
LM2940L-xx-AA3-R
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(1) R: Tape Reel, T: Tube
(2) AA3: SOT-223, TA3: TO-220, TN3: TO-252,
TQ 2: TO-263, TQ3: TO-263-3
(3) xx: refer to Marking Information
(4) L: Lead Free Plating, Blank: Pb/Sn
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