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The SPX2940 is a 1A, accurate voltage regulators with a low drop out voltage of 280mV (typical) at 1A.
These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. They are fully fault protected against over current, reverse battery, and positive and negative voltage transients.
The SPX2940 is offered in 3-pin TO-220 & TO-263 packages. For a 3A version, refer to the SPX29300 data sheet.

Features:

Guaranteed 1.5A Peak Current

Low Quiescent Current

Low Dropout Voltage of 280mV at 1A

Extremely Tight Load and Line Regulation

Extremely Fast Transient Response

Reverse-battery Protection

Internal Thermal Protection

Internal Short Circuit Current Limit

Replacement for LM2940, MIC2940A, AS2940

Standard TO-220 and TO-263 packages

Accuracy	±3 %
Brand/Series	SPX Series
Current, Supply	12 mA
Dimensions	10.67 x 4.82 x 16.51 mm
Height	0.65" (16.51mm)
Length	0.42" (10.67mm)
Line Regulation	1 %
Load Regulation	1.5 %
Mounting Type	Through Hole
Number of Outputs	1
Number of Pins	3
Operation Mode	Linear
Output Type	Fixed
Package Type	TO-220
Temperature, Operating, Maximum	+125 °C
Temperature, Operating, Minimum	-40 °C
Temperature, Operating, Range	-40 to +125 °C
Voltage, Input Range	3.2 to 16 V
Voltage, Input, High Level	16 V
Voltage, Input, Low Level	3.2 V
Voltage, Output	5 V
Width	0.19" (4.82mm)
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Accuracy ±3 %  Exar Accuracy ±3 %  Low Dropout Voltage Regulators Accuracy ±3 %  Exar Low Dropout Voltage Regulators Accuracy ±3 %   Brand/Series SPX Series  Exar Brand/Series SPX Series  Low Dropout Voltage Regulators Brand/Series SPX Series  Exar Low Dropout Voltage Regulators Brand/Series SPX Series   Current, Supply 12 mA  Exar Current, Supply 12 mA  Low Dropout Voltage Regulators Current, Supply 12 mA  Exar Low Dropout Voltage Regulators Current, Supply 12 mA   Dimensions 10.67 x 4.82 x 16.51 mm  Exar Dimensions 10.67 x 4.82 x 16.51 mm  Low Dropout Voltage Regulators Dimensions 10.67 x 4.82 x 16.51 mm  Exar Low Dropout Voltage Regulators Dimensions 10.67 x 4.82 x 16.51 mm   Height 0.65" (16.51mm)  Exar Height 0.65" (16.51mm)  Low Dropout Voltage Regulators Height 0.65" (16.51mm)  Exar Low Dropout Voltage Regulators Height 0.65" (16.51mm)   Length 0.42" (10.67mm)  Exar Length 0.42" (10.67mm)  Low Dropout Voltage Regulators Length 0.42" (10.67mm)  Exar Low Dropout Voltage Regulators Length 0.42" (10.67mm)   Line Regulation 1 %  Exar Line Regulation 1 %  Low Dropout Voltage Regulators Line Regulation 1 %  Exar Low Dropout Voltage Regulators Line Regulation 1 %   Load Regulation 1.5 %  Exar Load Regulation 1.5 %  Low Dropout Voltage Regulators Load Regulation 1.5 %  Exar Low Dropout Voltage Regulators Load Regulation 1.5 %   Mounting Type Through Hole  Exar Mounting Type Through Hole  Low Dropout Voltage Regulators Mounting Type Through Hole  Exar Low Dropout Voltage Regulators Mounting Type Through Hole   Number of Outputs 1  Exar Number of Outputs 1  Low Dropout Voltage Regulators Number of Outputs 1  Exar Low Dropout Voltage Regulators Number of Outputs 1   Number of Pins 3  Exar Number of Pins 3  Low Dropout Voltage Regulators Number of Pins 3  Exar Low Dropout Voltage Regulators Number of Pins 3   Operation Mode Linear  Exar Operation Mode Linear  Low Dropout Voltage Regulators Operation Mode Linear  Exar Low Dropout Voltage Regulators Operation Mode Linear   Output Type Fixed  Exar Output Type Fixed  Low Dropout Voltage Regulators Output Type Fixed  Exar Low Dropout Voltage Regulators Output Type Fixed   Package Type TO-220  Exar Package Type TO-220  Low Dropout Voltage Regulators Package Type TO-220  Exar Low Dropout Voltage Regulators Package Type TO-220   Temperature, Operating, Maximum +125 °C  Exar Temperature, Operating, Maximum +125 °C  Low Dropout Voltage Regulators Temperature, Operating, Maximum +125 °C  Exar Low Dropout Voltage Regulators Temperature, Operating, Maximum +125 °C   Temperature, Operating, Minimum -40 °C  Exar Temperature, Operating, Minimum -40 °C  Low Dropout Voltage Regulators Temperature, Operating, Minimum -40 °C  Exar Low Dropout Voltage Regulators Temperature, Operating, Minimum -40 °C   Temperature, Operating, Range -40 to +125 °C  Exar Temperature, Operating, Range -40 to +125 °C  Low Dropout Voltage Regulators Temperature, Operating, Range -40 to +125 °C  Exar Low Dropout Voltage Regulators Temperature, Operating, Range -40 to +125 °C   Voltage, Input Range 3.2 to 16 V  Exar Voltage, Input Range 3.2 to 16 V  Low Dropout Voltage Regulators Voltage, Input Range 3.2 to 16 V  Exar Low Dropout Voltage Regulators Voltage, Input Range 3.2 to 16 V   Voltage, Input, High Level 16 V  Exar Voltage, Input, High Level 16 V  Low Dropout Voltage Regulators Voltage, Input, High Level 16 V  Exar Low Dropout Voltage Regulators Voltage, Input, High Level 16 V   Voltage, Input, Low Level 3.2 V  Exar Voltage, Input, Low Level 3.2 V  Low Dropout Voltage Regulators Voltage, Input, Low Level 3.2 V  Exar Low Dropout Voltage Regulators Voltage, Input, Low Level 3.2 V   Voltage, Output 5 V  Exar Voltage, Output 5 V  Low Dropout Voltage Regulators Voltage, Output 5 V  Exar Low Dropout Voltage Regulators Voltage, Output 5 V   Width 0.19" (4.82mm)  Exar Width 0.19" (4.82mm)  Low Dropout Voltage Regulators Width 0.19" (4.82mm)  Exar Low Dropout Voltage Regulators Width 0.19" (4.82mm)