LM217

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 circuit 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 February 2008 Rev 14 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 LM117/LM217/LM317 Pin configuration 1 Figure 1. Pin configuration Pin connections (top view) TO-220 TO-220FP D2PAK (Any Type) TO-3 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 LM117/LM217/LM317 Diagram 3 Figure 2. Diagram Schematic diagram 5/25 Electrical characteristics LM117/LM217/LM317 4 Table 4. Electrical characteristics Electrical characteristics for LM117/LM217 (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) Parameter Line regulation Test conditions VI - VO = 3 to 40 V VO ≤ V 5 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 Symbol ΔVO 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 LM117/LM217/LM317 Table 5. Symbol ΔVO Electrical characteristics Electrical characteristics for LM317 (VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = 0 to 125°C, unless otherwise specified) 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. 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 LM117/LM217/LM317 Application information 6 Application information The LM117/217/317 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 LM117/217317 is a floating regulator and "sees" only the input-tooutput 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. 9/25 Application information LM117/LM217/LM317 Figure 8. Slow turn-on 15 V regulator Figure 9. Current regulator IO = (Vref/R1) + IADJ = 1.25V/R1 Figure 10. 5 V electronic shut-down regulator 10/25 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. 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 LM117/LM217/LM317 Package mechanical data 7 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. ECOPACK specifications are available at: www.st.com. 13/25 Package mechanical data LM117/LM217/LM317 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 14/25 B E LM117/LM217/LM317 Package mechanical data Figure 14. Drawing dimension TO-220 (type SMIC-subcon.) 0015988/F 15/25 Package mechanical data LM117/LM217/LM317 Figure 15. Drawing dimension TO-220 (type STD-ST) 0015988/A 16/25 LM117/LM217/LM317 Package mechanical data Table 6. TO-220 mechanical data Type STD-ST Type SMIC-Subcon. mm. Max. 4.60 0.88 1.70 0.70 Min. 4.47 0.80 1.15 0.56 0.38 15.25 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 2.72 10.40 2.70 5.15 1.32 6.60 2.72 14.00 3.93 16.25 2.04 13.35 10 2.29 4.83 10.15 2.54 5.08 1.27 6.24 2.67 13.50 3.90 16.40 28.74 3.83 2.74 2.80 16.55 2.92 13.65 10.30 2.79 5.33 15.75 15.07 15.24 15.45 Typ. 4.57 0.81 Max. 4.67 0.86 1.44 Dim. Min. A A1 b1 c c1 D D1 E e e1 F H1 J1 L L1 L20 L30 ∅P Q 4.40 0.61 1.14 0.49 mm. Typ. Note: In spite of some difference in tolerances, the packages are compatible. 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 LM117/LM217/LM317 Package mechanical data Figure 16. Drawing dimension D2PAK (type STD-ST) 0079457/L 19/25 Package mechanical data LM117/LM217/LM317 Figure 17. Drawing dimension D2PAK (type WOOSEOK-SUBCON.) 0079457/L 20/25 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. 21/25 Package mechanical data LM117/LM217/LM317 Figure 18. D2PAK footprint recommended data Table 8. Footprint data Values mm. A B C D E F G 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 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. 23/25 Revision history LM117/LM217/LM317 8 Table 9. Date Revision history Document revision history Revision 10 11 12 13 14 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 500mA on Table 5. Added Table 1. Added: TO-220 mechanical data Figure 14 on page 15, Figure 15 on page 16 and Table 6 on page 17. 01-Sep-2004 19-Jan-2007 13-Jun-2007 23-Nov-2007 06-Feb-2008 24/25 LM117/LM217/LM317 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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