LM317MDTX

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This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Output Current in Excess of 0.5 A Output Adjustable Between 1.2 V and 37 V Internal Thermal Overload Protection Internal Short-Circuit Current Limiting Output Transistor Safe Area Compensation Floating Operation for High Voltage Applications D-PAK 2 1 3 1. Adj 2. Output 3. Input TO-220 (Single Gauge) 12 3 Ordering Information Product Number Marking Package Packing Method Operating Temperature LM317MDTX LM317MDT TO-252 3L (D-PAK) Tape and Reel LM317MDTXM LM317MDT TO-252 3L (D-PAK) Tape and Reel LM317MT LM317M TO-220 3L (Single Gauge) Rail 0 to +125°C * Refer to below unit orientation figure for TM / TF suffix packing. © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com LM317M — 3-Terminal 0.5A Positive Adjustable Regulator September 2014 LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Block Diagram Input V in 3 + - P rote ction Circ uitry V olta ge Re fe re nce R lim it 2 Vo Output 1 V ad j Figure 1. Block Diagram Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted. Symbol VI - VO TJ TSTG Parameter Input-Output Voltage Differential Operating Junction Temperature Range Storage Temperature Range Value Unit 40 V 0 to +125 °C -65 to +125 °C Thermal Characteristics Values are at TA = 25°C unless otherwise noted. Value Symbol PD Parameter LM317MT Power Dissipation LM317MDTX / LM317MDTXM(1),(2) Internally Limited Unit W RθJC Thermal Resistance, Junction to Case 5 - °C/W RθJA Thermal Resistance, Junction to Ambient 81 100 °C/W Notes: 1. Thermal resistance test board - size: 76.2 mm x 114.3 mm x 1.6 mm (1S0P), JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com 2 VI - VO = 5 V, IO = 0.1 A, 0°C ≤ TJ ≤ +125°C, PDMAX = 7.5 W, unless otherwise specified. Symbol Rline Rload IADJ Parameter Line Regulation(3) Load Regulation(3) Conditions Min. Typ. TA = +25°C, 3 V ≤ VI −VO ≤ 40 V 0.01 0.04 0.02 0.07 TA = +25°C, 10 mA ≤ IO ≤ 0.5 A, VO ≤ 5 V 5 25 mV TA = +25°C, 10 mA ≤ IO ≤ 0.5 A, VO ≥ 5 V 0.1 0.5 %/VO 10 mA ≤ IO ≤ 0.5 A, VO ≤ 5 V 20 70 mV 0.3 1.5 %/VO - 50 100 μA 0.2 5.0 μA 1.25 1.30 V Adjustment Pin Current 3 V ≤ VI - VO ≤ 40 V, 10 mA ≤ IO ≤ 0.5 A, PD < PDMAX VREF Reference Voltage 3 V < VI - VO < 40 V, 10 mA ≤ IO ≤ 0.5 A, PD < PDMAX STT Temperature Stability TJ = 0°C to +125°C 0.7 Minimum Load Current to Maintain Regulation VI - VO = 40 V 3.5 eN RR ST 1.20 VI - VO ≤ 15 V, PD < PDMAX 0.5 0.9 Maximum Output Current VI - VO = 40 V PD < PDMAX, TA = +25°C 0.15 0.25 RMS Noise, % of VOUT TA = +25°C, 10 Hz < f < 10 kHz Ripple Rejection Long-Term Stability %/ V 10 mA ≤ IO ≤ 0.5 A, VO ≥ 5V Adjustment Pin Current Change IO(MAX) Unit 3 V ≤ VI −VO ≤ 40 V ΔIADJ IL(MIN) Max. VO = 10 V, f = 120 Hz, without CADJ %/VO 10.0 A 0.003 66 mA %/VO 65 dB VO = 10 V, f = 120 Hz, CADJ = 10 μF(4) 80 TJ = +125°C, 1000 Hours 0.3 1 %/ 1000Hrs Notes: 3. Load and Line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 4. CADJ, when used, is connected between the adjustment pin and ground. © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com 3 LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Electrical Characteristics Figure 2. Minimum Load Current Figure 3. Peak Output Current vs. Input-Output Differential Voltage Figure 4. Adjustment Pin Current vs. Temperature Figure 5. Ripple Rejection vs. Frequency Figure 6. Load Regulation vs. Temperature Figure 7. Line Regulation vs. Temperature © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com 4 LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Typical Performance Characteristics LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Typical Performance Characteristics (Continued) Figure 8. Output Voltage vs. Temperature © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 Figure 9. Thermal Shutdown www.fairchildsemi.com 5 D1 1N4002 Input VO LM317M Output + 120 1.0uF VADJ 1K 720 KSP2222 TTL CONTROL MINIMUM VO = 1.25V Figure 10. 15V Electronic Shutdown Regulator(5) Note: 5. D1 protects the device during an input short circuit. VO LM317M Output Input 240 1N4001 50K VADJ KSP2907 R2 + 1.0uF Figure 11. Slow Turn-On Regulator © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com 6 LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Typical Application IO Input LM317M R1 VO R2 Output VADJ IADJ V REF- + I I =  ---------------≅ 1.25V ---------------- R1  OMAX ADJ R1 V REF - + I 1.25V I =  --------------------≅ --------------------OMAX  R1 + R2 ADJ R1 + R2 5mA < I < 500mA O Figure 12. Current Regulator © 2003 Fairchild Semiconductor Corporation LM317M Rev. 1.1.0 www.fairchildsemi.com 7 LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Typical Application (Continued) LM317M — 3-Terminal 0.5A Positive Adjustable Regulator Physical Dimensions ) $   0,1  )   0,1   )      &  0,1  0$;        0,1  /$1'3$77(515(&200(1'$7,21 ) %   )   )   0,1   )   6(('(7$,/$  % ) *$*(3/$1(   )   127(681/(6627+(5:,6(63(&,),(' $127&203/,$1772-('(&729$5,$7,21$% 0$; %$//',0(16,21$5(,10,//,0(7(5 &',0(16,216$5((;&/86,9(2)%855602/')/$6+ 6($7,1*3/$1( $1'7,(%$5(;7586,216 '/$'3$77(513(5,3&$$7$1'$5' 723;1 ('5$:,1*),/(1$0(0.772'5(9 )'2(6127&203/