Specification	REG1117A

Current - Output	1 A
Current - Quiescent (Iq)	10 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-261AA, TO-261-4
Protection Features	Over Current, Over Temperature
PSRR	62 dB
Supplier Device Package	SOT-223-4
Voltage - Input (Max) [Max]	15 V
Voltage - Output (Min/Fixed)	1.25 V
Voltage Dropout (Max) [Max]	1.55 V

REG1117A Series

1-A, 15-V, linear voltage regulator from -40°C to +125°C

Part	Current - Quiescent (Iq)	Protection Features	Number of Regulators	Output Configuration	Current - Output	Voltage Dropout (Max) [Max]	Mounting Type	Supplier Device Package	Package / Case	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	PSRR	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Output Type
Texas Instruments REG1117-2.85	10 mA	Over Current Over Temperature	1	Positive	800 mA	1.2 V	Surface Mount	SOT-223-4	TO-261-4 TO-261AA	15 V	2.85 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117G4	10 mA	Over Current Over Temperature	1	Positive	800 mA	1.2 V	Surface Mount	SOT-223-4	TO-261-4 TO-261AA	15 V	1.25 V	62 dB	125 °C	-40 °C		Adjustable
Texas Instruments REG1117FA-5.0KTTTG	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	5 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117FA-5.0KTTT	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	5 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117FA-1.8KTTT	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	1.8 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117FA-5.0/500	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	5 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117A-1.8/2K5	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	SOT-223-4	TO-261-4 TO-261AA	15 V	1.8 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117FA-2.5/500	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	2.5 V	62 dB	125 °C	-40 °C	1.81 mOhm
Texas Instruments REG1117FAKTTT	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	TO-263 (DDPAK-3)	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 V	1.25 V	62 dB	125 °C	-40 °C		Adjustable
Texas Instruments REG1117A	10 mA	Over Current Over Temperature	1	Positive	1 A	1.55 V	Surface Mount	SOT-223-4	TO-261-4 TO-261AA	15 V	1.25 V	62 dB	125 °C	-40 °C		Adjustable

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	480	$ 1.86
Texas Instruments	TUBE	1	$ 2.74
		100	$ 2.26
		250	$ 1.62
		1000	$ 1.22

Description

General part information

REG1117A Series

The REG1117 is a family of easy-to-use three-terminal voltage regulators. The family includes a variety of fixed-and adjustable-voltage versions, two currents (800mA and 1A) and two package types (SOT-223 and DDPAK). See the chart below for available options.

Output voltage of the adjustable versions is set with two external resistors. The REG1117 low dropout voltage allows its use with as little as 1V input-output voltage differential.

Laser trimming assures excellent output voltage accuracy without adjustment. An NPN output stage allows output stage drive to contribute to the load current for maximum efficiency.

Documents

Technical documentation and resources

REG1117: 800mA 1A Low Dropout Pos Regulator 1.8, 2.5, 2.85, 3.3, 5V, Adjustable datasheet (Rev. D)

Data sheet

REG1117A

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REG1117A

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Technical Specifications

REG1117A Series

Pricing

Description

REG1117A Series

Documents

LDO Noise Demystified (Rev. B)

Packaging Limits Range of Linear Regulators

LDO PSRR Measurement Simplified (Rev. A)

An Easy Solution to Current Limiting an Op Amp

REG1117: 800mA 1A Low Dropout Pos Regulator 1.8, 2.5, 2.85, 3.3, 5V, Adjustable datasheet (Rev. D)

REG1117A Series