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STMICROELECTRONICS LM317P Adjustable Voltage Regulator

The LM317P is a versatile positive adjustable voltage regulator capable of delivering up to 1.5 A of load current. It features an output voltage range from 1.2 V to 37 V, precisely set via an external resistive divider. Designed in a compact TO-220 package, it offers thermal shutdown, current limiting, and overload protection, making it suitable for high-voltage applications. Its floating operation allows for flexible circuit design, with stable regulation over varying line and load conditions. Ideal for power supplies, battery chargers, and adjustable voltage regulation circuits.

Authorized Distributors
Source:Newark
Part No:LM317P
Stock:340
Inv Date:06-11-2026
Price: Unit price: $1.13
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Source:DigiKey
Part No:LM317P
Stock:9204
Inv Date:06-11-2026
Price: Unit price: $1.57
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Part No:LM317P
Stock:1386
Inv Date:06-12-2026
Price: Unit price: $1.29
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Part No:LM317P
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.99
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Part No:LM317P
Stock:2434
Inv Date:06-11-2026
Price: Unit price: $0.565
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Source:Arrow EU
Part No:LM317P
Stock:1
Inv Date:06-12-2026
Price: N/A
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Part No:LM317P
Stock:16800
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS LM317P Adjustable Voltage Regulator Specifications:

  • Output voltage range: 1.2 V to 37 V
  • Maximum output current: >1.5 A
  • Package: TO-220
  • Thermal shutdown protection
  • Current limiting feature
  • Floating operation for high voltages
  • Input voltage limit: 40 V
  • Power dissipation: Internally limited
  • Storage temperature: -65°C to 150°C
  • Maximum junction temperature: 125°C
  • Thermal resistance junction-case: 3°C/W (DPAK), 5°C/W (TO-220), 5°C/W (TO-220FP)
  • Thermal resistance junction-ambient: 62.5°C/W (DPAK), 50°C/W (TO-220), 60°C/W (TO-220FP)

Buy the ST Series LM317P Adjustable Voltage Regulator: LM317P

Purchase the ST Series LM317P adjustable voltage regulator online today to enjoy reliable performance in power supplies and battery chargers. Engineered for precise control, it features an output voltage range from 1.2 V to 37 V, capable of delivering over 1.5 A load current. Its thermal shutdown and overload protections ensure safety and durability in demanding applications. Compact in a TO-220 package, this regulator is ideal for a wide range of electronic projects, providing stable and adjustable voltage regulation for your power management needs.

Get ST Series LM317P adjustable voltage regulator today—built for precision and long-lasting durability.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS LM317P?

You can click on the BUY or RFQ button to purchase LM317P from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part LM317P?

You can download the LM317P datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of LM317P?

STMICROELECTRONICS

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