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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Bulk |
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 60V
Voltage - Output (Min/Fixed) 1.25V
Voltage - Output (Max) 57V
Voltage Dropout (Max) -
Current - Output 1.5A
Current - Quiescent (Iq) 12 mA
Current - Supply (Max) -
PSRR 80dB ~ 65dB (120Hz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature 0°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-205AD, TO-39-3 Metal Can
Supplier Device Package TO-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LM317HVH from Texas Instruments is a high-voltage adjustable linear regulator capable of delivering 1.5A with an output range from 1.25V to 57V. Its robust TO-3 metal package ensures excellent thermal performance. With a typical quiescent current of 12mA and PSRR of 80dB at 120Hz, it provides clean, stable power for industrial, audio, and telecommunications applications requiring higher voltages.

  • High Output Voltage Capability: Adjustable up to 57V, this regulator handles applications beyond standard 24V LDOs, reducing the need for multiple conversion stages.
  • High Current Capacity: 1.5A output current supports power-hungry loads like industrial sensors and audio amplifiers.
  • Robust TO-3 Package: The metal can package provides superior heat dissipation, ensuring reliability in high-temperature environments.
  • Excellent Line Regulation: With 80dB PSRR at 120Hz, it effectively rejects mains-frequency noise, critical for audio and measurement equipment.

High-Voltage Bench Power Supplies

The LM317HVH's ability to output up to 57V makes it perfect for variable bench supplies. Its 1.5A current capability and adjustable output from 1.25V provide flexibility for testing various circuits.

Industrial Control System Power Rails

In industrial environments with 48V backplanes, this regulator steps down to a stable, adjustable lower voltage. The TO-3 package ensures robust heat dissipation for continuous operation.

Audio Amplifier Bias Supplies

For tube amplifiers or high-voltage op-amp stages, the LM317HVH provides a clean, adjustable bias rail. Its 80dB PSRR at 120Hz effectively filters mains hum.

Telecom Line Driver Power

Telecom equipment often requires higher voltages for line drivers. The LM317HVH's 57V output capability and 1.5A current handle these demands with a simple, reliable linear solution.

Battery Charger for High-Voltage Packs

Charging 48V battery packs requires a precise voltage source. The adjustable output up to 57V allows for constant-voltage charging with current limiting via external resistors.

Laboratory Reference Voltage Source

With its low noise and high PSRR, the LM317HVH can serve as a stable reference for calibration equipment, providing a precise, adjustable voltage for testing.

Q: What is the output voltage range?
A: The LM317HVH is adjustable from 1.25V to 57V.
Q: What is the maximum output current?
A: It can deliver up to 1.5A of output current.
Q: What is the input voltage range?
A: The input voltage can range from 1.25V up to 60V (absolute maximum).
Q: What is the quiescent current?
A: The quiescent current is typically 12mA.
Q: What is the PSRR?
A: PSRR is 80dB at 120Hz, reducing to 65dB at higher frequencies.
Q: What package is available?
A: It is available in the TO-3 metal can package.
Base Product Number : LM317HV
1.5A 57V Adjustable High Voltage LDO Linear Regulator Texas Instruments TO-3
Q: What is the output voltage range?
A: The LM317HVH is adjustable from 1.25V to 57V.
Q: What is the maximum output current?
A: It can deliver up to 1.5A of output current.
Q: What is the input voltage range?
A: The input voltage can range from 1.25V up to 60V (absolute maximum).
Q: What is the quiescent current?
A: The quiescent current is typically 12mA.
Q: What is the PSRR?
A: PSRR is 80dB at 120Hz, reducing to 65dB at higher frequencies.
Q: What package is available?
A: It is available in the TO-3 metal can package.