Integrated Circuits (ICs)

LM117K STEEL/NOPB

Active

EXTENDED TEMPERATURE 1.5A ADJUSTABLE LINEAR REGULATOR WITH SHORT CIRCUIT PROTECTION

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsAN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B)Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise (Rev. B)+12

Integrated Circuits (ICs)

LM117K STEEL/NOPB

Active

Texas Instruments

EXTENDED TEMPERATURE 1.5A ADJUSTABLE LINEAR REGULATOR WITH SHORT CIRCUIT PROTECTION

Deep-Dive with AI

DocumentsAN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B)Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise (Rev. B)+12

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM117K STEEL/NOPB

Current - Output	1.5 A
Current - Quiescent (Iq)	5 mA
Mounting Type	Through Hole
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-3, TO-204AA
Protection Features	Over Temperature, Over Current, Short Circuit
PSRR [Max]	65 dB
PSRR [Min]	80 dB
Supplier Device Package	TO-3-2
Voltage - Output (Max)	37 V
Voltage - Output (Min/Fixed)	1.25 V

LM117 Series

Extended Temperature 1.5A Adjustable Linear Regulator with Short Circuit Protection

Part	Output Configuration	Voltage - Output (Max)	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Current - Quiescent (Iq)	PSRR [Max]	PSRR [Min]	Voltage - Output (Min/Fixed)	Mounting Type	Number of Regulators	Protection Features	Package / Case	Current - Output	Supplier Device Package	Voltage - Input (Max) [Max]
Texas Instruments LM117K STEEL/NOPB	Positive	37 V	Adjustable	-55 °C	125 °C	5 mA	65 dB	80 dB	1.25 V	Through Hole	1	Over Current Over Temperature Short Circuit	TO-204AA TO-3	1.5 A	TO-3-2
Texas Instruments LM117H	Positive	37 V	Adjustable	-55 °C	150 °C	5 mA	65 dB	80 dB	1.25 V	Through Hole	1	Over Current Over Temperature Short Circuit	TO-205AD TO-39-3 Metal Can	1.5 A
Texas Instruments LM117K STEEL	Positive	37 V	Adjustable	-55 °C	125 °C	5 mA	65 dB	80 dB	1.25 V	Through Hole	1	Over Current Over Temperature Short Circuit	TO-204AA TO-3	1.5 A	TO-3-2
Texas Instruments LM117H/NOPB	Positive	37 V	Adjustable	-55 °C	150 °C	5 mA	65 dB	80 dB	1.25 V	Through Hole	1	Over Current Over Temperature Short Circuit	TO-205AD TO-39-3 Metal Can	1.5 A
Texas Instruments LM117HVH	Positive	57 V	Adjustable	-55 °C	150 °C	7 mA	65 dB	80 dB	1.25 V	Through Hole	1	Over Current Over Temperature Short Circuit	TO-205AD TO-39-3 Metal Can	1.5 A		60 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tray	1	$ 70.82
		10	$ 67.28
		50	$ 65.51
		100	$ 60.64
Texas Instruments	TRAY NON-STD	1	$ 83.67
		100	$ 73.08
		250	$ 56.35
		1000	$ 50.40

Description

General part information

LM117 Series

The LM117 and LM317-N series of adjustable 3-pin positive voltage regulators are capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range and a wide temperature range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators.

The LM117 and LM317-N offer full overload protection such as current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios that are difficult to achieve with standard 3-terminal regulators.