Texas Instruments LM117K STEEL/NOPB

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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Tray |
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.25V
Voltage - Output (Max) 37V
Voltage Dropout (Max) -
Current - Output 1.5A
Current - Quiescent (Iq) 5 mA
Current - Supply (Max) -
PSRR 80dB ~ 65dB (120Hz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -55°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-204AA, TO-3
Supplier Device Package TO-3-2
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LM117K is a versatile adjustable linear voltage regulator from Texas Instruments, delivering up to 1.5A of output current. With an output range from 1.25V to 37V, it provides a flexible solution for various power supply needs. Its high power supply rejection ratio ensures clean, stable output, making it suitable for audio, industrial, and test equipment applications. The robust TO-3 package ensures excellent heat dissipation for reliable performance.

  • Wide Adjustable Range: Output from 1.25V to 37V provides design flexibility for multiple voltage requirements.
  • High Output Current: 1.5A capability supports powering multiple components or moderate-load devices.
  • Excellent Ripple Rejection: 80dB PSRR at 120Hz ensures clean power for noise-sensitive analog circuits.
  • Low Quiescent Current: 5mA quiescent current improves efficiency in battery-powered applications.

Adjustable Power Supply for Test Equipment

Use the LM117K to create a precision adjustable bench supply. Its 1.25V to 37V output range and 1.5A capability cover most analog circuits, while the 80dB PSRR at 120Hz ensures clean power for sensitive measurements.

Battery-Powered Devices

With a low 5mA quiescent current, the LM117K is suitable for battery-operated instruments where extended standby time is critical. The low dropout allows operation close to the battery's end-of-life voltage.

Audio Preamplifier Supply

Power audio preamps with a stable, low-noise rail. The high PSRR (80dB at 120Hz) rejects mains hum, providing a clean DC supply that preserves audio fidelity.

Microcontroller Logic Supply

Regulate a stable voltage for microcontrollers and digital logic. The 1.5A output can power multiple ICs, and the adjustable output lets you set exact voltages like 3.3V or 5V.

Industrial Sensor Interface

Provide a regulated supply for industrial sensors and transducers. The TO-3 package offers excellent thermal performance, allowing reliable operation in high-temperature environments.

Laboratory Reference Voltage

Use the LM117K as a stable reference for calibration equipment. Its adjustable output and high accuracy make it ideal for generating precise reference voltages.

Q: What is the output voltage range of the LM117K STEEL/NOPB?
A: The output voltage is adjustable from 1.25V to 37V.
Q: What is the maximum output current?
A: The LM117K can deliver up to 1.5A of output current.
Q: What is the input voltage range?
A: The input voltage range is from 1.25V up to 37V (maximum input-output differential).
Q: What is the dropout voltage?
A: The dropout voltage is not specified in the provided data.
Q: What is the quiescent current?
A: The quiescent current is 5 mA.
Q: What package is available?
A: This device is available in a TO-3-2 package.
Base Product Number : LM117K
1.5A 37V Adjustable High PSRR LDO Linear Regulator Texas Instruments TO-3-2
Q: What is the output voltage range of the LM117K STEEL/NOPB?
A: The output voltage is adjustable from 1.25V to 37V.
Q: What is the maximum output current?
A: The LM117K can deliver up to 1.5A of output current.
Q: What is the input voltage range?
A: The input voltage range is from 1.25V up to 37V (maximum input-output differential).
Q: What is the dropout voltage?
A: The dropout voltage is not specified in the provided data.
Q: What is the quiescent current?
A: The quiescent current is 5 mA.
Q: What package is available?
A: This device is available in a TO-3-2 package.