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VOLTAGE REGULATOR. LM317 Datasheet |
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LM217, LM317
Datasheet
1.2 V to 37 V adjustable voltage regulators
TO-220
TO-220FP
D²PAK
Features
• Output voltage range: 1.2 to 37 V
• Output current in excess of 1.5 A
• 0.1% line and load regulation
• Floating operation for high voltages
• Complete series of protections: current limiting, thermal shutdown and SOA
control
Description
The LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP and
D²PAK packages intended for use as positive adjustable voltage regulators.
They are designed to supply more than 1.5 A of load current with an output voltage
adjustable over a 1.2 to 37 V range.
The nominal output voltage is selected by means of a resistive divider, making the
device exceptionally easy to use and eliminating the stocking of many fixed
regulators.
Product status link
LM217
LM317
DS0433 - Rev 21 - July 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
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1 Pin configuration
Figure 1. Pin connections (top view)
LM217, LM317
Pin configuration
TO-220
D²PAK
TO-220FP
DS0433 - Rev 21
page 2/31
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LM217, LM317
Maximum ratings
2
Note:
Maximum ratings
Symbol
VI - VO
IO
TOP
PD
TSTG
Table 1. Absolute maximum ratings
Parameter
Input-reference differential voltage
Output current
Operating junction temperature for:
Power dissipation
Storage temperature
LM217
LM317
LM317B
Value
40
Internally limited
- 25 to 150
0 to 125
-40 to 125
Internally limited
- 65 to 150
Unit
V
A
°C
°C
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these condition is not implied.
Symbol
RthJA
RthJC
Table 2. Thermal data
Parameter
D²PAK
Thermal resistance junction-ambient
62.5
Thermal resistance junction-case
3
TO-220
50
5
TO-220FP
60
5
Unit
°C/W
°C/W
DS0433 - Rev 21
page 3/31
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