LM117/LM217/LM317
1.2 V to 37 V adjustable voltage regulators
Features
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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
TO-220
TO-220FP
Description
The LM117/LM217/LM317 are monolithic
integrated circuit in TO-220, TO-220FP, TO-3 and
D
2
PAK 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 only a resistive divider, making the device
exceptionally easy to use and eliminating the
stocking of many fixed regulators.
D
2
PAK
TO-3
Table 1.
Device summary
Order codes
TO-220
D
2
PAK (tape and reel)
TO-220FP
TO-3
LM117K
LM217T
LM317T
LM217D2T-TR
LM317D2T-TR
LM317P
LM217K
LM317K
February 2008
Rev 14
1/25
www.st.com
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STMICROELECTRONICS [ STMICROELECTRONICS ]
