UNISONIC TECHNOLOGIES CO., LTD
LM2940
LINEAR INTEGRATED CIRCUIT
1A LOW-DROPOUT POSITIVE
VOLTAGE REGULATOR
1
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.
TO-220
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 (VIN-VOUT≤3V).
1
1
TO-252
SOT-223
ꢀ
FEATURES
*Pb-free plating product number: LM2940L
* 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
Order Number
Pin Assignment
Packing
Package
Normal
Lead Free Plating
1
I
2
3
LM2940-xx-AA3- R
LM2940-xx-TA3-T
LM2940-xx-TN3-R
LM2940-xx-TN3-T
LM2940-xx-TQ2-R
LM2940-xx-TQ2-T
LM2940-xx-TQ3-R
LM2940-xx-TQ3-T
LM2940L-xx-AA3-R
LM2940L-xx-TA3-T
LM2940L-xx-TN3-R
LM2940L-xx-TN3-T
LM2940L-xx-TQ2-R
LM2940L-xx-TQ2-T
LM2940L-xx-TQ3-R
LM2940L-xx-TQ3-T
SOT-223
TO-220
TO-252
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
G
G
G
G
G
G
G
G
O
O
O
O
O
O
O
O
Tape Reel
Tube
I
I
Tape Reel
Tube
I
I
Tape Reel
Tube
I
I
Tape Reel
Tube
I
Note: 1.xx: output voltage, refer to Marking Information.
2.Pin Assignment: I: VIN G: GND O:VOUT
LM2940L-xx-AA3-R
(1)Packing Type
(1) R: Tape Reel, T: Tube
(2) AA3: SOT-223, TA3: TO-220, TN3: TO-252,
TQ 2: TO-263, TQ3: TO-263-3
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(3) xx: refer to Marking Information
(4) L: Lead Free Plating, Blank: Pb/Sn
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