LM317M, NCV317MA, NCV317M Voltage Regulator - Adjustable Output, Positive 500 mA The LM317M is an adjustable threeterminal positive voltage www.onsemi.com regulator capable of supplying in excess of 500 mA over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output Heatsink surface connected to Pin 2 voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blowout proof. The LM317M serves a wide variety of applications including local, oncard regulation. This device also makes an especially simple TO220AB adjustable switching regulator, a programmable output regulator, or by T SUFFIX connecting a fixed resistor between the adjustment and output, the CASE 221AB LM317M can be used as a precision current regulator. 1 2 Features 3 Output Current in Excess of 500 mA Output Adjustable between 1.2 V and 37 V SOT223 ST SUFFIX Internal Thermal Overload Protection 1 CASE 318E 2 Internal Short Circuit Current Limiting 3 Output Transistor SafeArea Compensation Floating Operation for High Voltage Applications 4 Eliminates Stocking Many Fixed Voltages DPAK DT SUFFIX NCV Prefix for Automotive and Other Applications Requiring 2 1 CASE 369C Unique Site and Control Change Requirements AECQ100 3 Qualified and PPAP Capable Heatsink Surface (shown as terminal 4 in These are PbFree Devices case outline drawing) is connected to Pin 2. V V in out V V in LM317M out PIN ASSIGNMENT R 1 1 Adjust 240 I Adj Adjust ** 2 V * out + C C in O 3V in 0.1 F 1.0 F R 2 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. * = C is required if regulator is located an appreciable distance from power supply filter. in ** = C is not needed for stability, however, it does improve transient response. O DEVICE MARKING INFORMATION R See general marking information in the device marking 2 V 1.25 V 1 I R out Adj 2 section on page 11 of this data sheet. R 1 Since I is controlled to less than 100 A, the error associated with this Adj term is negligible in most applications. Figure 1. Simplified Application Semiconductor Components Industries, LLC, 2014 1 Publication Order Number: October, 2019 Rev. 26 LM317M/DLM317M, NCV317MA, NCV317M MAXIMUM RATINGS (T = 25C, unless otherwise noted.) A Rating Symbol Value Unit InputOutput Voltage Differential V V 40 Vdc I O Power Dissipation (Package Limitation) (Note 1) Plastic Package, T Suffix, Case 221A T = 25C P Internally Limited A D Thermal Resistance, JunctiontoAir 70 C/W JA Thermal Resistance, Junction toCase 5.0 C/W JC Plastic Package, DT Suffix, Case 369C T = 25C P Internally Limited A D Thermal Resistance, JunctiontoAir 92 C/W JA Thermal Resistance, Junction toCase 5.0 C/W JC Plastic Package, ST Suffix, Case 318E T = 25C P Internally Limited A D Thermal Resistance, JunctiontoAir 245 C/W JA Thermal Resistance, Junction toCase 15 C/W JC Maximum Junction Temperature T +150 C JMAX Storage Temperature Range T 65 to +150 C stg Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Figure 25 provides thermal resistance versus PC board pad size. ELECTRICAL CHARACTERISTICS (V V = 5.0 V I = 0.1 A, T = T to T (Note 2), unless otherwise noted.) I O O J low high LM317M/LM317MB/NCV317MB Min Typ Max Characteristics Figure Symbol Unit Line Regulation (Note 3) (T = 25C, 3.0 V V V 40 V) 3 Reg 0.01 0.04 %/V A I O line Load Regulation (Note 3) 4 Reg load T = 25C, 10 mA I 0.5 A A O 5.0 25 mV V 5.0 V O 0.1 0.5 % V O V 5.0 V O Adjustment Pin Current 5 I 50 100 A Adj Adjustment Pin Current Change 3, 4 I 0.2 5.0 A Adj 2.5 V V V 40 V, 10 mA I 0.5 A, P P I O L D max Reference Voltage 5 V 1.20 1.25 1.30 V ref 3.0 V V V 40 V, 10 mA I 0.5 A, P P I O L D max Line Regulation 3.0 V V V 40 V (Note 3) 3 Reg 0.02 0.07 %/V I O line Load Regulation 10 mA I 0.5 A (Note 3) 4 Reg O load 20 70 mV V 5.0 V O 0.3 1.5 % V V 5.0 V O O Temperature Stability (T T T ) 5 T 0.7 % V low J high S O Minimum Load Current to Maintain Regulation (V V = 40 V) 5 I 3.5 10 mA I O Lmin Maximum Output Current 5 I A max 0.5 0.9 V V 15 V, P P I O D max 0.15 0.25 V V = 40 V, P P , T = 25C I O D max A RMS Noise, % of V (T = 25C, 10 Hz f 10 kHz) N 0.003 % V O A O Ripple Rejection, V = 10 V, f = 120 Hz (Note 4) 6 RR dB O 65 Without C Adj 66 80 C = 10 F Adj Thermal Shutdown (Note 5) 180 C LongTerm Stability, T = T (Note 6) 5 S 0.3 1.0 %/1.0 J high kHrs. T = 25C for Endpoint Measurements A 2. T to T = 0 to +125C for LM317M T to T = 40 to +125C for LM317MB, NCV317MB. low high low high 3. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account O separately. Pulse testing with low duty cycle is used. 4. C , when used, is connected between the adjustment pin and ground. Adj 5. Thermal characteristics are not subject to production test. 6. Since LongTerm Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lottolot. www.onsemi.com 2