Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsVoltage RegulatorsLM217MDT-TR

February 2008 Rev 7 1/21

LM217M

LM317M

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

■ Output transition safe area compensation

■ Floating operation for high voltage applications

Description

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

exceptionally easy to use and eliminating the

stocking of many fixed regulators.

DPAK

TO-220

Table 1. Device summary

Order codes

TO-220 DPAK (tape and reel)

LM217MDT-TR

LM317MT LM317MDT-TR

www.st.com

Summary of content (21 pages)

PAGE 1
LM217M LM317M 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 ■ Output transition safe area compensation ■ Floating operation for high voltage applications TO-220 DPAK exceptionally easy to use and eliminating the stocking of many fixed regulators.
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Contents LM217M - LM317M Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical performance . . . . .
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LM217M - LM317M 1 Diagram Figure 1.
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Pin configuration LM217M - LM317M 2 Pin configuration Figure 2.
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LM217M - LM317M Maximum ratings 3 Maximum ratings Table 2. Absolute maximum ratings Symbol VI-VO Parameter Input-output differential voltage PD Power dissipation TOP Operating junction temperature range (1) TSTG Storage temperature range Value Unit 40 V Internally limited mW for LM217M -40 to 125 for LM317M 0 to 125 °C -55 to 150 °C 1. Re-Boot is not guaranteed for TJ ≥ 85°C. Table 3.
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Electrical characteristics LM217M - LM317M 4 Electrical characteristics Table 4. Electrical characteristics of LM217M (refer to the test circuits, TJ = - 40 to 125 °C, VI - VO = 5 V, IO = 100 mA, PD ≤ 7.
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LM217M - LM317M Table 5. Symbol ΔVO ΔVO Electrical characteristics Electrical characteristics of LM317M (refer to the test circuits, TJ = 0 to 125 °C, VI - VO = 5 V, IO = 100 mA, PD ≤ 7.
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Typical performance LM217M - LM317M 5 Typical performance Figure 4. Current limit Figure 6. Basic adjustable regulator Figure 7. Thermal resistance & maximum power dissipation vs P.C.B. copper length for DPAK Note: Pdmax calculated for Ta = 50°C. 8/21 Figure 5.
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LM217M - LM317M 6 Application information Application information The LM217M/LM317M provide an internal reference voltage of 1.25 V between the output and adjustment terminals. These devices are used to set a constant current flow across an external resistor divider (see Figure 6), giving an output voltage VO of: VO = VREF (1 + R2 / R1) + IADJ R2. The devices were designed to minimize the term IADJ (100 µA max) and to maintain it very constant in line and load changes.
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Application circuits 7 Application circuits Figure 8. Voltage regulator with protection diodes Figure 9. Slow turn-on 15 V regulator Figure 10. Current regulator IO=VREF/R1 + IADJ = 1.
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LM217M - LM317M Application circuits Figure 11. 5 V electronic shut-down regulator Figure 12.
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Package mechanical data 8 LM217M - LM317M Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark.
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LM217M - LM317M Package mechanical data TO-220 mechanical data Dim. mm. Min. Typ. inch. Max. Min. Typ. Max. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 0.70 0.019 0.027 D1 E 1.27 0.49 0.050 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.
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Package mechanical data LM217M - LM317M Figure 13.
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LM217M - LM317M Package mechanical data Figure 14. Drawing dimension DPAK (type FUJITSU-Subcon.
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Package mechanical data LM217M - LM317M Figure 15. Drawing dimension DPAK (type IDS-Subcon.
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LM217M - LM317M Table 6. Package mechanical data DPAK mechanical data Dim. Min. type STD-ST type FUJITSU-Subcon. type IDS-Subcon mm. mm. mm. Typ. Max. Min. Typ. Max. Min. Typ. Max. 2.30 2.35 2.19 2.38 A 2.20 2.40 2.25 A1 0.90 1.10 0.96 1.06 0.89 1.14 A2 0.03 0.23 0 0.10 0.03 0.23 b 0.64 0.90 0.76 0.86 0.64 0.88 b4 5.20 5.40 5.28 5.38 5.21 5.46 c 0.45 0.60 0.46 0.56 0.46 0.58 c2 0.48 0.60 0.46 0.56 0.46 0.58 D 6.00 6.20 6.05 6.15 5.
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Package mechanical data LM217M - LM317M Figure 16. DPAK footprint recommended data Table 7. Footprint data Values 18/21 Dim. mm. inch. A 6.70 0.264 B 6.70 0.64 C 1.8 0.070 D 3.0 0.118 E 1.60 0.063 F 2.30 0.091 G 2.30 0.
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LM217M - LM317M Package mechanical data Tape & reel DPAK-PPAK mechanical data mm. inch. Dim. Min. Typ. A Max. Min. Typ. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Max. 0.504 0.512 22.4 0.519 0.882 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.
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Revision history LM217M - LM317M 9 Revision history Table 8. Document revision history Date Revision 21-Jun-2004 5 The document has been reformatted. 06-Dec-2006 6 DPAK mechanical data updated, added footprint data. 11-Feb-2008 7 Added: Table 1 on page 1.
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LM217M - LM317M Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.