Part # LM217M LM317M datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Medium current 1.2 to 37 V adjustable voltage regulator


Part Details:

LM217MLM317M Medium current 1.2 to 37 V adjustable voltage regulator Features Output voltage range: 1.2 to 37 V Output current in excess of 500 mA Line regulation typ. 0.01 % Load regulation typ. 0.1 % Thermal overload protection Short circuit protection TO-220 DPAK Output transition safe area compensation Floating operation for high voltage applications exceptionally easy to use and eliminating the Description stocking of many fixed regulators. The LM217M/LM317M are monolithic integrated circuits in TO-220 and DPAK packages intended for use as positive adjustable voltage regulators. They are designed to supply until 500 mA 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 Table 1. Device summary Order codes TO-220 DPAK (tape and reel) LM217MDT-TR LM317MT LM317MDT-TR February 2008 Rev 7 1/21 www.st.com 21 Contents LM217M - LM317M Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.1 External capacitors (Figure 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.2 Protection diodes (Figure 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.3 Start-up block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9


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LM217M LM317M.pdf Datasheet