LM117_10

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 D²PAK 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. D²PAK TO-3 Table 1. Device summary Order codes TO-220 D²PAK (tape and reel) TO-220FP TO-3 LM117K LM217T LM317T LM217D2T-TR LM317D2T-TR LM317P LM217K LM317K March 2010 Doc ID 2154 Rev 15 1/25 www.st.com 25 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 2/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Pin configuration 1 Figure 1. Pin configuration Pin connections (top view) TO-220 TO-220FP D²PAK (Any Type) TO-3 Doc ID 2154 Rev 15 3/25 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 D²PAK 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 4/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Diagram 3 Figure 2. Diagram Schematic diagram Doc ID 2154 Rev 15 5/25 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 ΔVO 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 = 25°C B = 10Hz to 100kHz, TJ = 25°C CADJ=0 CADJ=10µF 66 1.5 VI - VO = 2.5 to 40V IO = 10 mA to IMAX 1.2 TJ = 25°C 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 µA µA V % mA TJ = 25°C Min. Typ. 0.01 0.02 TJ = 25°C 5 20 Max. 0.02 %/V 0.05 15 mV 50 Unit ΔVO IADJ ΔIADJ VREF ΔVO/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 = 25°C, f = 120Hz 1. CADJ is connected between pin 1 and ground. 6/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Electrical characteristics VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = 0 to 125°C, unless otherwise specified. Table 5. Symbol ΔVO 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 = 25°C B = 10Hz to 100kHz, TJ = 25°C CADJ=0 CADJ=10µF 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 = 25°C 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 µA µA V % mA TJ = 25°C Min. Typ. 0.01 0.02 TJ = 25°C 5 20 Max. 0.04 %/V 0.07 25 mV 70 Unit ΔVO IADJ ΔIADJ VREF ΔVO/VO IO(min) IO(max) eN SVR Supply voltage rejection (1) TJ = 25°C, f = 120Hz 1. CADJ is connected between pin 1 and ground. Doc ID 2154 Rev 15 7/25 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 8/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Application information 6 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 µA max) and to maintain it very constant with line and load changes. Usually, the error term IADJ × 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 µF An adjustment terminal to ground 10 µF capacitor to improve the ripple rejection of about 15 dB (CADJ). An 1 µF tantalum (or 25 µF 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. Doc ID 2154 Rev 15 9/25 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 10/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 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. Doc ID 2154 Rev 15 11/25 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. 12/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Package mechanical data 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® 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. Doc ID 2154 Rev 15 13/25 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. Doc ID 2154 Rev 15 14/25 LM117, LM217, LM317 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. Doc ID 2154 Rev 15 15/25 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.) 16/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 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 Doc ID 2154 Rev 15 B E 17/25 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 18/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Package mechanical data Figure 18. Drawing dimension D²PAK (type STD-ST) 0079457/L Doc ID 2154 Rev 15 19/25 Package mechanical data LM117, LM217, LM317 Figure 19. Drawing dimension D²PAK (type WOOSEOK-SUBCON.) 0079457/L 20/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 Package mechanical data Table 7. D²PAK 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 D²PAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. Doc ID 2154 Rev 15 21/25 Package mechanical data LM117, LM217, LM317 Figure 20. D²PAK 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 22/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 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. Doc ID 2154 Rev 15 23/25 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. D²PAK mechanical data has been updated, add footprint data and the document has been reformatted. Change values ΔIADJ 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 24/25 Doc ID 2154 Rev 15 LM117, LM217, LM317 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. 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