LM217, LM317
1.2 V to 37 V adjustable voltage regulators
Datasheet - production data
Description
The LM217, LM317 are monolithic integrated
circuits in TO-220, TO-220FP and DPAK
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
TO-220
TO-220FP
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.
DPAK
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
Table 1. Device summary
Order codes
TO-220 (single gauge) TO-220 (double gauge) DPAK (tape and reel) TO-220FP
LM217T LM217T-DG LM217D2T-TR
LM317T LM317T-DG LM317D2T-TR LM317P
LM317BT
March 2014 DocID2154 Rev 19 1/25
This is information on a product in full production. www.st.comContents LM217, LM317
Contents
1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2/25 DocID2154 Rev 19