Fairchild LM317AHV Data Handbook
Summary
The LM317AHV is a 3-terminal positive adjustable regulator capable of delivering over 1.5A output current with adjustable voltage up to 57V. Designed for robust power supply applications, this TO-220 component features thermal overload protection and safe area compensation. Ideal for engineers and electronics professionals, the datasheet provides comprehensive specifications, application circuits, and mechanical dimensions for reliable circuit design.
Page 1 Text Content
查询LM317AHV供应商
www.fairchildsemi.com
LM317AHV 3-Terminal Positive Adjustable Regulator
Features Description Output Current in Excess of 1.5A This monolithic integrated circuit is an adjustable 3-terminal Output Adjustable Between 1. 2V and 57V positive voltage regulator designed to supply more than 1.5A Internal Thermal Overload Protection of load current with an output voltage adjustable over a 1.2 Internal Short Circuit Current Limiting to 57V. It employs internal current limiting, thermal shut Output Transistor Safe Area Compensation down and safe area compensation. TO-220 Package
TO-220
Output
1. Adj 2. Output 3. Input
Internal Block Diagram
Input 3Vin
Voltage Protection Reference Circuitry
Rlimit
Vo Output
Rev. 1.0.1
©2002 Fairchild Semiconductor Corporation
Page Summary Contents For Fairchild LM317AHV Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 6 |
| File Size | 47.07 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the output voltage range of the LM317AHV?
It is adjustable from 1.2V to 57V.
What is the maximum output current?
It can supply over 1.5A.
How do I calculate the output voltage with external resistors?
Vo = 1.25V * (1 + R2/R1) + Iadj * R2, where Iadj is typically negligible.
What safety features does it have?
It includes internal thermal overload protection, short circuit current limiting, and safe area compensation.
What is the operating temperature range?
The operating junction temperature range is 0°C to +125°C.