writ LL fy, SGS-THOMSON LM217M 7 iicroe.ectaomics LM317M MEDIUM CURRENT 1.2 TO 37V ADJUSTABLE VOLTAGE REGULATOR OUTPUT VOLTAGE RANGE : 1.2 TO 37V OUTPUT CURRENT IN EXCESS OF 500 mA , LINE REGULATION TYP. 0.01% CO LOAD REGULATION TYP. 0.1% THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSISTOR SAFE AREA COMPENSATION s FLOATING OPERATION FOR HIGH VOLTAGE APPLICATIONS TO-220 DPAK TO-252 DESCRIPTION The LM217M/LM317M are monolithic integrated circuits in TO-220, DPAK, SOT-82 and SOT-194 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 37V range. The nominal output voltage is selected by means of only a resistive divider, making the device exceptionally easy to use and eliminating the SOT-82 SOT-194 stocking of many fixed regulators. SCHEMATIC DIAGRAM a. . OD INPUT Q22 i September 1997 1/11LM217M/LM317M ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Vi - Vo | {Input-Output Differential Voltage 40 Vv + Pg Power Dissipation Internally Limited Topr | Operating Junction Temperature Range () forLM217M -40 to 125 C | forLM317M 0 to 125 C Tstg | Storage Temperature Range -55 to 150 C (*) Re-Boot is not guaranteed for Tj > 85 C - THERMAL DATA Symbol Parameter SOT-82 TO-220 Unit SOT-194 DPAK Rithj-case | Thermal Resistance Junction-case Max 8 3 C/W Rihj-amb | Thermal Resistance Junction-ambient Max 100 50 C/W PIN CONNECTION AND ORDERING NUMBERS TO-220 SOT-82 INPUT 1) OUTPUT vous ADLUS ADJUST Tab connected to pin 3 5504211 mu DPAK SOT-194 2 i Vin CO 319 our 1 |TL=]) aowust PCIT813 1BSt Type TO-220 DPAK SOT-82 SOT-194 LM217M LM217MT LM217MDT LM217MX LM217MS LM317M LM317MT LM317MDT LM317MX LM317MS TEST CIRCUIT ty oy ' foal O } 5 4 a - | i a OQ J 1 daa | i: SCOB50O1 2/14 iy SGS-THOMSON MICROELECTRONICSLM217M/LM317M ELECTRICAL CHARACTERISTICS FOR LM217M (Refer to the test circuits, -40 < Tj < 125 C Vi- Vo =5 V, lo = 100 mA, Pa < 7.5W, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. , Max. | Unit AVo | Line Regulation Vi-Vo=3to40V | T)=25C 0.01 | 0.02 | %/V 0.02 0.05 %o/V AV > | Load Regulation Vo $ 5V Tj) = 25C 5 15 mV Vo 2 5V Tj = 25C 0.1 0.3 %/Vo lo = 10 MA to 500 mA 0.3 1 Vo fans =| Adjustment Pin Current 7 50 100 LA | Alaos | Adjustment Pin Current Vi-Vo=3 to 40 V 0.2 5 pA o=10mA to 500 mA i, Vrer_ | Reference Voltage Vi- Vo=3to 40 V 1.2 1.25 1.3 Voi lo = 10 MA to 500 mA | AVo | Output Voltage Temperature 0.7 % Vo | Stability lo(min) | Minimum Load Current Vi- Vo =40V 3.5 5 mA lo(max) |Maximum Output Current Vi- Vo $15V | 500 1000 mA Vi- Vo =40V, Pa < Pamax, Tj =25C i 200 @Nn Output Noise Voltage B = 10Hz to 10KHz 0.003 % (percentance of Vo) T= 25C SVR _ | Supply Voltage Rejection (*) T,=25C Caps=0 65 dB f= 120 Hz Cans=10KF | 66 80 dB (*) CADJ is connected between Adjust pin and Ground. ELECTRICAL CHARACTERISTICS FOR LM317M (Refer to the test circuits, 0 < Tj < 125 C Vi- Vo =5 V, lo = 100 mA, Pa < 7.5W, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit AV, | Line Regulation IVi-Vo=3to 40V Tj = 25 C ; 0.04 0.04 %/IV 0.02 0.07 SIV | AVo |Load Regulation Vo $ 5V Tj = 25 C 5 25 mV l=10mAto500mA | 20 70 mV Vo 2 5V Tj = 25 | 0.1 0.5 %IMV o lo = 10 MA to 500 mA 0.3 15 Mo laps | Adjustment Pin Current 50 100 LA | Alaps | Adjustment Pin Current Vi-Vo=3 to 40 V 0.2 5 HA i lo = 10 MA to 500 mA _| Vrer | Reference Voltage Vi-Vo=3 to 40 V 1.2 1.25 1.3 Vv lo = 10 MA to 500 mA AVo | Output Voltage Temperature 0.7 % Vo __ | Stability lo(miny | Minimum Load Current Vi- Vo = 40 V 3.5 10 | mA lo(max) | Maximum Output Current Vi- Vo <15V 500 1000 mA Vi- Vo =40V, Pa < Pamax, 1) =25C 200 en Output Noise Voltage B = 10Hz to 10KHz 0.003 % (percentance of Vo) Tj=25C SVR_ | Supply Voltage Rejection (*) Tj = 25C Capy=0 | 65 dB f= 120 Hz Capy=10uF | 66 80 dB (*) CADJ is connected between Adjust pin and Ground. Ky7 SSS THOMSON 3/11LM217M/LM317M Figure 1 : Current Limit Figure 2 : Minimum Operating Current ~ Figure 3 : Basic Adjustable Regulator. V. 2 LM317M 3 V, $- 5045/1 Figure 4 : Thermal Resistance & Maximum Power Dissipation vs P.C.B. Copper Lenght for DPAK Rpol /W) Po(W) 169 Z.4 2.2 95 - Faron 2.0 go 1.8 79 1.6 60 1.4 Rio 59 12 0 . 1.0 5 5 10 18 20 5 30 8 - {mm} 5011669 Pdmax calculated for Ta = 50 C 4/11 Ky7 SESTHOMSONLM217M/LM317M APPLICATION INFORMATION The LM317M provides an internal reference voltage of 1.25V between the output and adjustments terminals. This is used to set a constant current flow across an external resistor divider (see fig. 3), giving an output voltage Vo of: Ri Vo = Vrer (1 +B) + lapy Re The device was designed to minimize the term apy (100A 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 LM317M 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 optimise the load regulation, the current set resistor R1 (see fig. 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. EXTERNAL CAPACITORS (Fig.5) Normally no capacitors are needed unless the device is situated far from the input filter capacitors; in which case an input bypass is needed. ky SGS-THOMSON A 0.1pF disc or 1pF tantalium input bypass capacitor (Ci) is recommended to reduce the sensitivity to input line impedance. The adjustment terminal may be bypassed to ground to improve ripple rejection. This capacitor (Cagj) prevents ripple from being amplified as the output voltage is increased. A 10uF capacitor should improve ripple rejection about 80dB at 120Hz ana 10V application. Although the LM317M is stable with no output capacitance like any feedback circuit, certain values of external capacitance can cause excessive ringing. An output capacitance (Co) in the form of a 1pF tantalium or 25uF aluminium electrolytic capacitor on the output swamps this effect and insures stability. PROTECTION DIODES (Fig.5) When external capacitors are used with any IC regulator it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current points into the regulator. Figure 5 show the \LM317M_ with the recommended protection diodes for output voltages in excess of 25V or high capacitance values (C3 > 25uF, Co > 10uF). Diode D1 prevents C3 from discharging through the iC during an input short-circuit. The combination cf diodes D1 and D2 prevents Ce from discarging through the regulator during an input or output short-circuit. START-UP BLOCK It's not guaranteed the Re-Boot of the device when the junction temperature is over 85C. 5/11 MICROELECTRONICSLM217M/LM317M Figure 5 : Voltage Regulator with Protection Diodes. 1N4001 tS; LM317| mM ob Vo T]Ad) A02 1N4001 Te 240 n Rt (3 Tipe S -5046/1 Figure 6 : Slow Turn-on 15V Regulator. Figure 7 : Current Regulator. Vv; Vv I i a] -M317M 3 Ri _& 1 laps $-5053/1 __ Vref) 1.25V $-5062" on Ry ADJ Ay Figure 8 : 5V Electronic Shut-down Regulator. Figure 9 : Digitally Selected Outputs. c 9} -M317M 3 Vv 5 R1 240 1 Vi 2] iM3i7Mo Vo=5V ; 7V 10 35V R2 ae 0.1 pF C1 > 0.1 pF OTT 7200 INPUT $~5054/1 ________S S-5055/1 DIGITAL INPUTS (R2 sets maximum Vo) 6/114 hy7 S&S;THOMSONLM217M/LM317M TO-220 MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 4.8 0.189 Cc 1.37 0.054 D 2.4 2.8 0.094 0.110 D1 1.2 1.35 0.047 0.053 0.35 0.55 0.014 0.022 0.61 0.94 0.024 0.037 Fo 1.15 1.4 0.045 0.055 G 4.95 5.08 5.21 0.195 0.200 0.205 H2 10.4 0.409 H3 10.05 10.4 0.396 0.409 L2 16.2 0.638 L3 26.3 26.7 27.4 1.035 1.051 1.067 Ls 2.6 3 0.102 0.118 L 15.1 15.8 0.594 0.622 L7 6 6.6 0.236 0.260 Dia. 3.65 3.85 0.144 0.152 : ul x / L Ly] ot coo a P011D 7/1 -THOMSON Ky7 SESTHOMSONLM217M/LM317M TO-252 (DPAK) MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 2.2 2.4 0.086 0.094 Al 0.9 4.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.64 0.9 0.025 0.035 B2 5.2 5.4 0.204 0.212 c 0.45 0.6 0.017 0.023 Ce 0.48 0.6 0.019 0.023 D 6 6.2 0.236 0.244 6.4 6.6 0.252 0.260 G 4.4 4.6 0.173 0.181 9.35 10.1 0.368 0.397 L2 0.8 0.031 L4 0.6 1 0.023 0.039 H tr | RY an T = DETAIL "A" 0068772-B 8/11 ky SGS-THOMSON MICROELECTRONICSLM217M/LM317M SOT-82 MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 7.4 7.8 0.291 0.307 B 10.5 11.3 0.413 0.445 b 0.7 0.9 0.028 0.035 b1 0.49 0.75 0.019 0.030 Cc 2.4 2.7 0.04 0.106 cl 1.2 0.047 D 15.7 0.618 e 2.2 0.087 e3 4.4 0.173 F 3.8 0.150 H 2.54 0.100 C A ct __bt e3 PQ32A ky SGS-THOMSON MICROELECTRONICS 9/11LM217M/LM317M SOT-194 MECHANICAL DATA | e3 PO32B ron [jy SGS-THOMSON Sf MICROELECTRONICSLM217M/LM317M Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1997 SGS-THOMSON Microelectronics - Printed in Italy - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 11/11 Ay Besouecmones