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LM117 LM217, LM317
1.2 V to 37 V adjustable voltage regulators
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
TO-220 TO-220FP
Description
The LM117, LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP, TO-3 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 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-3
Table 1.
Device summary
Order codes TO-220 DPAK (tape and reel) TO-220FP TO-3 LM117K LM217T LM317T LM217D2T-TR LM317D2T-TR LM317P LM217K LM317K
March 2010
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Contents
LM117, LM217, LM317
Contents
1 2 3 4 5 6 7 8 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
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Pin configuration
1
Figure 1.
Pin configuration
Pin connections (top view)
TO-220
TO-220FP
DPAK (Any Type)
TO-3
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Maximum ratings
LM117, LM217, LM317
2
Table 2.
Symbol VI - VO IO
Maximum ratings
Absolute maximum ratings
Parameter Input-reference differential voltage Output current LM117 TOP Operating junction temperature for: LM217 LM317 PD TSTG Power dissipation Storage temperature Value 40 V Internally limited -55 to 150 -25 to 150 0 to 125 Internally limited -65 to 150 C C Unit
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Thermal data
Parameter Thermal resistance junction-case Thermal resistance junction-ambient DPAK 3 62.5 TO-220 3 50 TO-220FP 5 60 TO-3 4 35 Unit C/W C/W
Table 3.
Symbol RthJC RthJA
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Diagram
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Figure 2.
Diagram
Schematic diagram
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Electrical characteristics
LM117, LM217, LM317
4
Electrical characteristics
VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = - 55 to 150 C for LM117, TJ = - 25 to 150 C for LM217, unless otherwise specified.
Table 4.
Symbol VO
Electrical characteristics for LM117/LM217
Parameter Line regulation Test conditions VI - VO = 3 to 40 V VO 5 V IO = 10 mA to IMAX Load regulation VO 5 V, IO = 10 mA to IMAX Adjustment pin current Adjustment pin current Reference voltage (between pin 3 and pin 1) Output voltage temperature stability Minimum load current Maximum load current Output noise voltage (percentage of VO) VI - VO = 40 V VI - VO 15 V, PD < PMAX VI - VO = 40 V, PD < PMAX, TJ = 25C B = 10Hz to 100kHz, TJ = 25C CADJ=0 CADJ=10F 66 1.5 VI - VO = 2.5 to 40V IO = 10 mA to IMAX 1.2 TJ = 25C 0.1 0.3 50 0.2 1.25 1 3.5 2.2 A 0.4 0.003 65 dB 80 % 5 0.3 % 1 100 5 1.3 A A V % mA TJ = 25C Min. Typ. 0.01 0.02 TJ = 25C 5 20 Max. 0.02 %/V 0.05 15 mV 50 Unit
VO
IADJ IADJ VREF VO/VO IO(min) IO(max) eN
VI - VO = 2.5 to 40V IO= 10 mA to IMAX PD PMAX
SVR
Supply voltage rejection (1) TJ = 25C, f = 120Hz
1. CADJ is connected between pin 1 and ground.
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Electrical characteristics
VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = 0 to 125C, unless otherwise specified. Table 5.
Symbol VO
Electrical characteristics for LM317
Parameter Line regulation Test conditions VI - VO = 3 to 40 V VO 5 V IO = 10 mA to IMAX Load regulation VO 5 V, IO = 10 mA to IMAX Adjustment pin current Adjustment pin current Reference voltage (between pin 3 and pin 1) Output voltage temperature stability Minimum load current Maximum load current Output noise voltage (percentage of VO) VI - VO = 40 V VI - VO 15 V, PD < PMAX VI - VO = 40 V, PD < PMAX, TJ = 25C B = 10Hz to 100kHz, TJ = 25C CADJ=0 CADJ=10F 66 1.5 VI - VO = 2.5 to 40V, IO = 10 mA to 500mA VI - VO = 2.5 to 40V IO = 10 mA to 500mA PD PMAX 1.2 TJ = 25C 0.1 0.3 50 0.2 1.25 1 3.5 2.2 A 0.4 0.003 65 dB 80 % 10 0.5 % 1.5 100 5 1.3 A A V % mA TJ = 25C Min. Typ. 0.01 0.02 TJ = 25C 5 20 Max. 0.04 %/V 0.07 25 mV 70 Unit
VO
IADJ IADJ VREF VO/VO IO(min) IO(max) eN
SVR
Supply voltage rejection (1) TJ = 25C, f = 120Hz
1. CADJ is connected between pin 1 and ground.
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Typical characteristics
LM117, LM217, LM317
5
Figure 3.
Typical characteristics
Output current vs. input-output differential voltage Figure 4. Dropout voltage vs. junction temperature
Figure 5.
Reference voltage vs. junction
Figure 6.
Basic adjustable regulator
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Application information
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Application information
The LM117, LM217, LM317 provides an internal reference voltage of 1.25 V between the output and adjustments terminals. This is used to set a constant current flow across an external resistor divider (see Figure 3), giving an output voltage VO of: VO = VREF (1 + R2/R1) + IADJ R2 The device was designed to minimize the term IADJ (100 A max) and to maintain it very constant with line and load changes. Usually, the error term IADJ x R2 can be neglected. To obtain the previous requirement, all the regulator quiescent current is returned to the output terminal, imposing a minimum load current condition. If the load is insufficient, the output voltage will rise. Since the LM117, LM217, LM317 is a floating regulator and "sees" only the input-to-output differential voltage, supplies of very high voltage with respect to ground can be regulated as long as the maximum input-to-output differential is not exceeded. Furthermore, programmable regulator are easily obtainable and, by connecting a fixed resistor between the adjustment and output, the device can be used as a precision current regulator. In order to optimize the load regulation, the current set resistor R1 (see Figure 3) should be tied as close as possible to the regulator, while the ground terminal of R2 should be near the ground of the load to provide remote ground sensing. Performance may be improved with added capacitance as follow: An input bypass capacitor of 0.1 F An adjustment terminal to ground 10 F capacitor to improve the ripple rejection of about 15 dB (CADJ). An 1 F tantalum (or 25 F Aluminium electrolytic) capacitor on the output to improve transient response. In additional to external capacitors, it is good practice to add protection diodes, as shown in Figure 4 D1 protect the device against input short circuit, while D2 protect against output short circuit for capacitance discharging.
Figure 7.
Voltage regulator with protection diodes
Note:
D1 protect the device against input short circuit, while D2 protects against output short circuit for capacitors discharging.
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Application information
LM117, LM217, LM317
Figure 8.
Slow turn-on 15 V regulator
Figure 9.
Current regulator
IO = (VREF / R1) + IADJ = 1.25 V / R1
Figure 10. 5 V electronic shut-down regulator
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Application information
Figure 11. Digitally selected outputs
(R2 sets maximum VO)
Figure 12. Battery charger (12 V)
* RS sets output impedance of charger ZO = RS (1 + R2/R1). Use of RS allows low charging rates whit fully charged battery.
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Application information
LM117, LM217, LM317
Figure 13. Current limited 6 V charger
* R3 sets peak current (0.6 A for 1 0). ** C1 recommended to filter out input transients.
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Package mechanical data
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Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark.
Table 6.
TO-220 mechanical data
Type STD - ST Dual Gauge Type STD - ST Single Gauge mm. Max. 4.60 0.88 1.70 0.70 15.75 1.27 10.00 2.40 4.95 1.23 6.20 2.40 13.00 3.50 16.40 28.90 3.75 2.65 3.85 2.95 3.75 2.65 10.40 2.70 5.15 1.32 6.60 2.72 14.00 3.93 10.00 2.40 4.95 0.51 6.20 2.40 13.00 3.50 16.40 28.90 3.85 2.95 10.40 2.70 5.15 0.60 6.60 2.72 14.00 3.93 Min. 4.40 0.61 1.14 0.48 15.25 Typ. Max. 4.60 0.88 1.70 0.70 15.75
Dim. Min. A b b1 c D D1 E e e1 F H1 J1 L L1 L20 L30 P Q 4.40 0.61 1.14 0.48 15.25
mm. Typ.
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Package mechanical data
LM117, LM217, LM317
Figure 14. Drawing dimension TO-220 (type STD-ST Dual Gauge)
0015988/A
Note:
1 2
Max resin gate protrusion: 0.5 mm. Resin gate position is accepted in each of the two positions shown on the dwg, or their symmetrical.
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Package mechanical data
Figure 15. Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
Note:
In spite of some difference in tolerances, the packages are compatible.
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Package mechanical data
LM117, LM217, LM317
Figure 16. Drawing dimension tube for TO-220 Dual Gauge (mm.)
Figure 17. Drawing dimension tube for TO-220 Single Gauge (mm.)
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Package mechanical data
TO-3 mechanical data
Dim. A B C D E G N P R U V 30.10 3.88 10.9 16.9 26.2 4.09 39.5 1.185 0.152 0.96 mm. Min. Typ. 11.85 1.05 1.10 1.70 8.7 20.0 0.429 0.665 1.031 0.161 1.555 0.037 Max. Min. inch. Typ. 0.466 0.041 0.043 0.066 0.342 0.787 Max.
P G
A
D C
U
V
O
N
R
P003C/C
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B
E
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Package mechanical data
LM117, LM217, LM317
TO-220FP mechanical data
Dim. A B D E F F1 F2 G G1 H L2 L3 L4 L5 L6 L7 DIA. 28.6 9.8 2.9 15.9 9 3 mm. Min. 4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0 16 30.6 10.6 3.6 16.4 9.3 3.2 1.126 0.385 0.114 0.626 0.354 0.118 Typ Max. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 Min. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.142 0.645 0.366 0.126 inch. Typ. Max. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409
7012510A-H
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Package mechanical data
Figure 18. Drawing dimension DPAK (type STD-ST)
0079457/L
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Package mechanical data
LM117, LM217, LM317
Figure 19. Drawing dimension DPAK (type WOOSEOK-SUBCON.)
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Package mechanical data
Table 7.
DPAK mechanical data
Type STD-ST Type WOOSEOK-Subcon. mm. MAX. 4.60 0.23 0.93 1.70 0.60 1.36 9.35 MIN. 4.30 0 0.70 1.17 0.45 1.25 9 7.50 10.40 9.80 7.50 2.54 4.88 15 2.49 2.29 1.27 1.30 0.4 0 8 0 5.28 15.85 2.69 2.79 1.40 1.75 15 2.20 1.79 1 1.20 0.30 3 2.54 5.08 15.30 15.60 2.60 2.79 1.40 1.60 10.20 0.50 1.30 9.20 TYP. MAX. 4.70 0.20 0.90 1.37 0.60 1.40 9.40
Dim. MIN. A A1 b b2 c c2 D D1 E E1 e e1 H J1 L L1 L2 R V2 4.40 0.03 0.70 1.14 0.45 1.23 8.95 7.50 10 8.50
mm. TYP.
Note:
The DPAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint.
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Package mechanical data
LM117, LM217, LM317
Figure 20. DPAK footprint recommended data
Table 8.
Footprint data
Values Dim. A B C D E F G mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 inch. 0.480 0.384 0.665 0.138 0.063 0.100 0.200
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Package mechanical data
Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 Typ. Max. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 Min. Typ. Max. 7.086 0.519 inch.
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Revision history
LM117, LM217, LM317
8
Table 9.
Date
Revision history
Document revision history
Revision 10 11 12 13 14 15 Changes Mistake VREF ==> VO, tables 1, 4 and 5. DPAK mechanical data has been updated, add footprint data and the document has been reformatted. Change values IADJ and VREF test condition of IO = 10 mA to IMAX ==> IO = 10 mA to 500 mA on Table 5. Added Table 1. Added: TO-220 mechanical data Figure 14 on page 14 and Table 6 on page 13. Added: notes Figure 14 on page 14, Figure 15 on page 15, Figure 16 and Figure 17 on page 16.
01-Sep-2004 19-Jan-2007 13-Jun-2007 23-Nov-2007 06-Feb-2008 02-Mar-2010
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