L78M Precision 500 mA regulators Datasheet - production data Description The L78M series of three-terminal positive regulators is available in TO-220, TO-220FP, DPAK and IPAK packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shutdown and safe area protection, resulting it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external Features components to obtain adjustable voltage and  Output current to 0.5 A currents.  Output voltages of 5; 6; 8; 9; 10; 12; 15; 24 V  Thermal overload protection  Short circuit protection  Output transition SOA protection  Output voltage tolerance: 2 % (AB and AC versions) or 4 % (C version)  Guaranteed in extended temperature range March 2017 DocID2146 Rev 21 1/47 This is information on a product in full production. www.st.com

Contents L78M Contents 1 Diagram ............................................................................................ 3 2 Pin configuration ............................................................................. 4 3 Maximum ratings ............................................................................. 5 4 Test circuits ..................................................................................... 6 5 Electrical characteristics ................................................................ 7 6 Typical performance ..................................................................... 22 7 Applications information .............................................................. 24 7.1 Design considerations ..................................................................... 24 8 Package information ..................................................................... 28 8.1 TO-220 (single gauge) package information ................................... 29 8.2 TO-220 (dual gauge) package information ...................................... 31 8.3 TO-220FP package information ...................................................... 33 8.4 DPAK (TO-252) type A package information................................... 35 8.5 DPAK (TO-252) type I package information .................................... 38 8.6 DPAK packing information .............................................................. 41 8.7 IPAK package information ............................................................... 43 9 Ordering information ..................................................................... 45 10 Revision history ............................................................................ 46 2/47 DocID2146 Rev 21

L78M Diagram 1 Diagram Figure 1: Block diagram DocID2146 Rev 21 3/47

Pin configuration L78M 2 Pin configuration Figure 2: Pin connections (top view) Figure 3: Schematic diagram 4/47 DocID2146 Rev 21

L78M Maximum ratings 3 Maximum ratings Table 1: Absolute maximum ratings Symbol Parameter Value Unit for VO = 5 to 18 V 35 VI DC input voltage V for VO = 20, 24 V 40 IO Output current Internally limited mA PD Power dissipation Internally limited mW TSTG Storage temperature range - 65 to 150 °C for L78MxxAC 0 to 125 TOP Operating junction temperature range for L78MxxAB -40 to 125 °C for L78MxxC 0 to 150 Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 2: Thermal data Symbol Parameter TO-220 TO-220FP DPAK IPAK Unit RthJC Thermal resistance junction-case 5 5 8 8 °C/W RthJA Thermal resistance junction-ambient 50 60 100 100 °C/W Figure 4: Application circuit DocID2146 Rev 21 5/47

Test circuits L78M 4 Test circuits Figure 5: DC parameter Figure 6: Load regulation Figure 7: Ripple rejection 6/47 DocID2146 Rev 21

L78M Electrical characteristics 5 Electrical characteristics Refer to the test circuits, T = 25 °C, V = 10 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 3: Electrical characteristics of L78M05C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 4.8 5 5.2 V VO Output voltage IO = 5 to 350 mA, VI = 7 to 20 V 4.75 5 5.25 V VI = 7 to 25 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 8 to 25 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 100 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 50 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 8 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C SVR Supply voltage rejection VI = 8 to 18 V, f = 120 Hz, IO = 300 mA 62 dB eN Output noise voltage B = 10 Hz to 100 kHz 40 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 300 mA DocID2146 Rev 21 7/47

Electrical characteristics L78M Refer to the test circuits, V = 10 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 4: Electrical characteristics of L78M05A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 4.9 5 5.1 V VO Output voltage IO = 5 to 350 mA, VI = 7 to 20 V 4.8 5 5.2 V VI = 7 to 25 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 8 to 25 V, IO = 200 mA, TJ = 25 °C 50 IO = 5 to 500 mA, TJ = 25 °C 100 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 50 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 8 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -0.5 mV/°C VI = 8 to 18 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 62 dB TJ = 25°C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25 °C 40 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current TJ = 25 °C, VI = 35 V 300 mA Iscp Short circuit peak current TJ = 25 °C 700 mA 8/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, T = 25 °C, V = 11 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 5: Electrical characteristics of L78M06C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 5.75 6 6.25 V VO Output voltage IO = 5 to 350 mA, VI = 8 to 21 V 5.7 6 6.3 V VI = 8 to 25 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 9 to 25 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 120 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 60 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 9 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C SVR Supply voltage rejection VI = 9 to 19 V, f = 120 Hz, IO = 300 mA 59 dB eN Output noise voltage B = 10 Hz to 100 kHz 45 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 270 mA DocID2146 Rev 21 9/47

Electrical characteristics L78M Refer to the test circuits, V = 11 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 6: Electrical characteristics of L78M06A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 5.88 6 6.12 V VO Output voltage IO = 5 to 350 mA, VI = 8 to 21 V 5.75 6 6.3 V VI = 8 to 25 V, IO = 200 mA, TJ = 25 °C 100 DVO Line regulation mV VI = 9 to 25 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 120 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 60 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 9 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -0.5 mV/°C VI = 9 to 19 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 59 dB TJ = 25 °C eN Output noise voltage B = 10 Hz to 100 kHz 45 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current TJ = 25 °C, VI = 35 V 270 mA Iscp Short circuit peak current TJ = 25 °C 700 mA 10/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, T = 25 °C, V = 14 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 7: Electrical characteristics of L78M08C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 7.7 8 8.3 V VO Output voltage IO = 5 to 350 mA, VI = 10.5 to 23 V 7.6 8 8.4 V VI = 10.5 to 25 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 11 to 25 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 160 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 80 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 10.5 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C SVR Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz, IO = 300 mA 56 dB eN Output noise voltage B = 10 Hz to 100 kHz 52 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 250 mA DocID2146 Rev 21 11/47

Electrical characteristics L78M Refer to the test circuits, V = 14 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 8: Electrical characteristics of L78M08A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 7.84 8 8.16 V VO Output voltage IO = 5 to 350 mA, VI = 10.5 to 23 V 7.7 8 8.3 V VI = 10.5 to 25 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 11 to 25 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 160 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 80 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 10.5 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -0.5 mV/°C VI = 11.5 to 21.5 V, f = 120 Hz IO = 300 mA, SVR Supply voltage rejection 56 dB TJ = 25 °C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25 °C 52 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current TJ = 25 °C, VI = 35 V 250 mA Iscp Short circuit peak current TJ = 25 °C 700 mA 12/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, T = 25 °C, V = 15 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 9: Electrical characteristics of L78M09C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 8.65 9 9.35 V VO Output voltage IO = 5 to 350 mA, VI = 11.5 to 24 V 8.55 9 9.45 V VI = 11.5 to 25 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 12 to 25 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 180 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 90 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 11.5 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C SVR Supply voltage rejection VI = 12.5 to 23 V, f = 120 Hz, IO = 300 mA 56 dB eN Output noise voltage B = 10 Hz to 100 kHz 58 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 250 mA DocID2146 Rev 21 13/47

Electrical characteristics L78M Refer to the test circuits, V = 15 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 10: Electrical characteristics of L78M09A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 8.82 9 9.18 V VO Output voltage IO = 5 to 350 mA, VI = 11.5 to 24 V 8.64 9 9.36 V VI = 11.5 to 25 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 12 to 25 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 180 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 90 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 11.5 to 25 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -0.5 mV/°C VI = 12.5 to 23 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 56 dB TJ = 25 °C eN Output noise voltage B =10 Hz to 100 kHz, TJ = 25 °C 52 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current VI = 35 V, TJ = 25 °C 250 mA Iscp Short circuit peak current TJ = 25 °C 700 mA 14/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, V = 16 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 11: Electrical characteristics of L78M10A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 9.8 10 10.2 V VO Output voltage IO = 5 to 350 mA, VI = 12.5 to 25 V 9.6 10 10.4 V VI = 12.5 to 30 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 13 to 30 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 200 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 100 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 12.5 to 30 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -0.5 mV/°C VI = 13.5 to 24 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 56 dB TJ = 25 °C eN Output noise voltage B =10 Hz to 100 kHz, TJ = 25 °C 64 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current VI = 35 V, TJ = 25 °C 245 mA Iscp Short circuit peak current TJ = 25 °C 700 mA DocID2146 Rev 21 15/47

Electrical characteristics L78M Refer to the test circuits, T = 25 °C, V = 19 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 12: Electrical characteristics of L78M12C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 11.5 12 12.5 V VO Output voltage IO = 5 to 350 mA, VI = 14.5 to 27 V 11.4 12 12.6 V VI = 14.5 to 30 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 16 to 30 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 240 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 120 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 14.5 to 30 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -1 mV/°C SVR Supply voltage rejection VI = 15 to 25 V, f = 120 Hz, IO = 300 mA 55 dB eN Output noise voltage B = 10 Hz to 100 kHz 75 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 240 mA 16/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, V = 19 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 13: Electrical characteristics of L78M12A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 11.75 12 12.25 V VO Output voltage IO = 5 to 350 mA, VI = 14.5 to 27 V 11.5 12 12.5 V VI = 14.5 to 30 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 16 to 30 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 240 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 120 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 14.5 to 30 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -1 mV/°C VI = 15 to 25 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 55 dB TJ = 25 °C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25 °C 75 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current VI = 35 V, TJ = 25 °C 240 mA Iscp Short circuit peak current TJ = 25 °C 700 mA DocID2146 Rev 21 17/47

Electrical characteristics L78M Refer to the test circuits, T = 25 °C, V = 23 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 14: Electrical characteristics of L78M15C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 14.4 15 15.6 V VO Output voltage IO = 5 to 350 mA, VI = 17.5 to 30 V 14.25 15 15.75 V VI = 17.5 to 30 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 20 to 30 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 300 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 150 Id Quiescent current 6 mA Quiescent current IO = 5 to 350 mA 0.5 ∆Id change IO = 200 mA, VI = 17.5 to 30 V 0.8 mA ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -1 mV/°C SVR Supply voltage rejection VI = 18.5 to 28.5 V, f = 120 Hz, IO = 300 54 dB mA eN Output noise voltage B = 10 Hz to 100 kHz 90 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 240 mA 18/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, V = 23 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 15: Electrical characteristics of L78M15A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 14.7 15 15.3 V VO Output voltage IO = 5 to 350 mA, VI = 17.5 to 30 V 14.4 15 15.6 V VI = 17.5 to 30 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 20 to 30 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 300 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 150 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 17.5 to 30 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -1 mV/°C VI = 18.5 to 28.5 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 54 dB TJ = 25 °C eN Output noise voltage B =10 Hz to 100 kHz, TJ = 25 °C 90 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current VI = 35 V, TJ = 25 °C 240 mA Iscp Short circuit peak current TJ = 25 °C 700 mA DocID2146 Rev 21 19/47

Electrical characteristics L78M Refer to the test circuits, T = 25 °C, V = 33 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF J I O I O unless otherwise specified. Table 16: Electrical characteristics of L78M24C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage 23 24 25 V VO Output voltage IO = 5 to 350 mA, VI = 27 to 38 V 22.8 24 25.2 V VI = 27 to 38 V, IO = 200 mA 100 ∆VO Line regulation mV VI = 28 to 38 V, IO = 200 mA 50 IO = 5 to 500 mA, TJ = 25 °C 480 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 240 Id Quiescent current 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 27 to 38 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -1.2 mV/°C SVR Supply voltage rejection VI = 28 to 38 V, f = 120 Hz, IO = 300 mA 50 dB eN Output noise voltage B = 10 Hz to 100 kHz 170 µV Vd Dropout voltage 2 V Isc Short circuit current VI = 35 V 240 mA 20/47 DocID2146 Rev 21

L78M Electrical characteristics Refer to the test circuits, V = 33 V, I = 350 mA, C = 0.33 µF, C = 0.1 µF, T = -40 to I O I O J 125 °C (AB), T = 0 to 125 °C (AC) unless otherwise specified. J Table 17: Electrical characteristics of L78M24A Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25 °C 23.5 24 24.5 V VO Output voltage IO = 5 to 350 mA, VI = 27 to 38 V 23 24 25 V VI = 27 to 38 V, IO = 200 mA, TJ = 25 °C 100 ∆VO Line regulation mV VI = 28 to 38 V, IO = 200 mA, TJ = 25 °C 30 IO = 5 to 500 mA, TJ = 25 °C 480 ∆VO Load regulation mV IO = 5 to 200 mA, TJ = 25 °C 240 Id Quiescent current TJ = 25 °C 6 mA IO = 5 to 350 mA 0.5 ∆Id Quiescent current change mA IO = 200 mA, VI = 27 to 38 V 0.8 ∆VO/∆T Output voltage drift IO = 5 mA -1.2 mV/°C VI = 28 to 38 V, f = 120 Hz, IO = 300 mA, SVR Supply voltage rejection 50 dB TJ = 25 °C eN Output noise voltage B =10 Hz to 100 kHz, TJ = 25 °C 170 µV Vd Dropout voltage TJ = 25 °C 2 V Isc Short circuit current VI = 35 V, TJ = 25 °C 240 mA Iscp Short circuit peak current TJ = 25 °C 700 mA DocID2146 Rev 21 21/47

Typical performance L78M 6 Typical performance Figure 8: Dropout voltage vs junction temp. Figure 9: Dropout characteristics Figure 10: Peak output current vs input-output Figure 11: Output voltage vs junction temperature differential voltage 22/47 DocID2146 Rev 21

L78M Typical performance Figure 13: Quiescent current vs junction Figure 12: Supply voltage rejection vs frequency temperature Figure 14: Load transient response Figure 15: Line transient response Figure 16: Quiescent current vs input voltage DocID2146 Rev 21 23/47

Applications information L78M 7 Applications information 7.1 Design considerations The L78M series of fixed voltage regulators are designed with thermal overload protection that shuts down the circuit when subjected to an excessive power overload condition, internal short-circuit protection that limits the maximum current the circuit will pass, and output transistor safe-area compensation that reduces the output short-circuit as the voltage across the pass transistor is increased. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high-frequency characteristics to insure stable operation under all load conditions. A 0.33 µF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Figure 17: Fixed output regulator Although no output capacitor is need for stability, C improve transient response if o present. C is required if regulator is located an appreciable distance from power I supply filter. Figure 18: Constant current regulator 24/47 DocID2146 Rev 21

L78M Applications information Figure 19: Circuit for increasing output voltage Figure 20: Adjustable output regulator (7 to 30 V) Figure 21: 0.5 to 10 V regulator DocID2146 Rev 21 25/47

Applications information L78M Figure 22: High current voltage regulator Figure 23: High output current with short circuit protection Figure 24: Tracking voltage regulator Figure 25: High input voltage circuit 26/47 DocID2146 Rev 21

L78M Applications information Figure 26: Reducing power dissipation with dropping resistor Figure 27: Power AM modulator (unity voltage gain, IO ≤ 0.5) The circuit performs well up to 100 kHz. Figure 28: Adjustable output voltage with temperature compensation Q is connected as a diode in order to compensate the variation of the Q V with 2 1 BE the temperature. C allows a slow rise time of the V . O DocID2146 Rev 21 27/47

Package information L78M 8 Package information 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. 28/47 DocID2146 Rev 21

L78M Package information 8.1 TO-220 (single gauge) package information Figure 29: TO-220 (single gauge) package outline DocID2146 Rev 21 29/47

Package information L78M Table 18: TO-220 (single gauge) mechanical data mm Dim. Min. Typ. Max. A 4.40 4.60 b 0.61 0.88 b1 1.14 1.70 c 0.48 0.70 D 15.25 15.75 E 10.00 10.40 e 2.40 2.70 e1 4.95 5.15 F 0.51 0.60 H1 6.20 6.60 J1 2.40 2.72 L 13.00 14.00 L1 3.50 3.93 L20 16.40 L30 28.90 ∅P 3.75 3.85 Q 2.65 2.95 30/47 DocID2146 Rev 21

L78M Package information 8.2 TO-220 (dual gauge) package information Figure 30: TO-220 (dual gauge) package outline DocID2146 Rev 21 31/47

Package information L78M Table 19: TO-220 (dual gauge) mechanical data mm Dim. Min. Typ. Max. A 4.40 4.60 b 0.61 0.88 b1 1.14 1.70 c 0.48 0.70 D 15.25 15.75 D1 1.27 E 10 10.40 e 2.40 2.70 e1 4.95 5.15 F 1.23 1.32 H1 6.20 6.60 J1 2.40 2.72 L 13 14 L1 3.50 3.93 L20 16.40 L30 28.90 ∅P 3.75 3.85 Q 2.65 2.95 32/47 DocID2146 Rev 21

L78M Package information 8.3 TO-220FP package information Figure 31: TO-220FP package outline DocID2146 Rev 21 33/47

Package information L78M Table 20: TO-220FP package mechanical data mm Dim. Min. Typ. Max. A 4.4 4.6 B 2.5 2.7 D 2.5 2.75 E 0.45 0.7 F 0.75 1 F1 1.15 1.70 F2 1.15 1.70 G 4.95 5.2 G1 2.4 2.7 H 10 10.4 L2 16 L3 28.6 30.6 L4 9.8 10.6 L5 2.9 3.6 L6 15.9 16.4 L7 9 9.3 Dia 3 3.2 34/47 DocID2146 Rev 21

L78M Package information 8.4 DPAK (TO-252) type A package information Figure 32: DPAK (TO-252) type A package outline DocID2146 Rev 21 35/47

Package information L78M Table 21: DPAK (TO-252) type A mechanical data mm Dim. Min. Typ. Max. A 2.20 2.40 A1 0.90 1.10 A2 0.03 0.23 b 0.64 0.90 b4 5.20 5.40 c 0.45 0.60 c2 0.48 0.60 D 6.00 6.20 D1 4.95 5.10 5.25 E 6.40 6.60 E1 4.60 4.70 4.80 e 2.16 2.28 2.40 e1 4.40 4.60 H 9.35 10.10 L 1.00 1.50 (L1) 2.60 2.80 3.00 L2 0.65 0.80 0.95 L4 0.60 1.00 R 0.20 V2 0° 8° 36/47 DocID2146 Rev 21

L78M Package information Figure 33: DPAK (TO-252) type A recommended footprint (dimensions are in mm) DocID2146 Rev 21 37/47

Package information L78M 8.5 DPAK (TO-252) type I package information Figure 34: DPAK (TO-252) type I package outline 38/47 DocID2146 Rev 21

L78M Package information Table 22: DPAK (TO-252) type I mechanical data mm Dim. Min. Typ. Max. A 2.20 2.30 2.38 A1 0.90 1.01 1.10 A2 0.00 - 0.10 b 0.77 - 0.89 b1 0.76 0.81 0.86 b2 0.77 - 1.10 b3 5.23 5.33 5.43 c 0.47 - 0.60 c1 0.46 0.51 0.56 c2 0.47 - 0.60 D 6.00 6.10 6.20 D1 5.25 5.40 5.60 E 6.50 6.60 6.70 E1 4.70 4.85 5.00 e 2.286 BSC H 9.80 10.10 10.40 L 1.40 1.50 1.70 L1 2.90 REF L2 0.90 - 1.25 L3 0.51 BSC L4 0.60 0.80 1.00 L5 0.90 - 1.50 L6 1.80 BSC Ө 0° - 8° Ө 5° 7° 9° Ө 5° 7° 9° DocID2146 Rev 21 39/47

Package information L78M Figure 35: DPAK (TO-252) type I recommended footprint (dimensions are in mm) 40/47 DocID2146 Rev 21

L78M Package information 8.6 DPAK packing information Figure 36: DPAK tape DocID2146 Rev 21 41/47

Package information L78M Figure 37: DPAK reel Table 23: DPAK tape and reel mechanical data Tape Reel mm mm Dim. Dim. Min. Max. Min. Max. A0 6.8 7 A 330 B0 10.4 10.6 B 1.5 B1 12.1 C 12.8 13.2 D 1.5 1.6 D 20.2 D1 1.5 G 16.4 18.4 E 1.65 1.85 N 50 F 7.4 7.6 T 22.4 K0 2.55 2.75 P0 3.9 4.1 Base qty. 2500 P1 7.9 8.1 Bulk qty. 2500 P2 1.9 2.1 R 40 T 0.25 0.35 W 15.7 16.3 42/47 DocID2146 Rev 21

L78M Package information 8.7 IPAK package information Figure 38: IPAK package outline DocID2146 Rev 21 43/47

Package information L78M Table 24: IPAK mechanical data mm Dim. Min. Typ. Max. A 2.20 2.40 A1 0.90 1.10 b 0.64 0.90 b2 0.95 b4 5.20 5.40 B5 0.30 c 0.45 0.60 c2 0.48 0.60 D 6.00 6.20 E 6.40 6.60 e 2.28 e1 4.40 4.60 H 16.10 L 9.00 9.40 L1 0.80 1.20 L2 0.80 1.00 V1 10° 44/47 DocID2146 Rev 21

L78M Ordering information 9 Ordering information Table 25: Order code Order codes Output TO-220 TO-220 voltages TO-220FP DPAK IPAK (single gauge) (dual gauge) L78M05ABV L78M05ABV-DG L78M05ABDT-TR 5 V L78M05ACDT-TR L78M05CV L78M05CV-DG L78M05CP L78M05CDT-TR L78M05CDT-1 5 V L78M06ABDT-TR 6 V L78M06CDT-TR 6 V L78M08ABDT-TR 8 V L78M08CV L78M08CV-DG L78M08CDT-TR 8 V L78M09ABDT-TR 9 V L78M09CV L78M09CV-DG L78M09CDT-TR 9 V L78M10ABDT-TR 10 V L78M12ABDT-TR 12 V L78M12ACDT-TR 12 V L78M12CV L78M12CV-DG L78M12CDT-TR 12 V L78M15ABV L78M15ABV-DG L78M15ABDT-TR 15 V L78M15CV L78M15CV-DG L78M15CDT-TR 15 V L78M24ABDT-TR 24 V L78M24ACDT-TR 24 V L78M24CV L78M24CV-DG L78M24CDT-TR 24 V DocID2146 Rev 21 45/47

Revision history L78M 10 Revision history Table 26: Document revision history Date Revision Changes 21-Jun-2004 6 Document updating. 30-Aug-2006 7 Order codes updated. 29-Nov-2006 8 DPAK mechanical data updated and add footprint data. 06-Jun-2007 9 Order codes updated. 10-Dec-2007 10 Added Table 25. 19-Feb-2008 11 Modified: Table 25 on page 44. 15-Jul-2008 12 Modified: Table 25 on page 44 and Table 26 on page 45. 07-Apr-2009 13 Modified: Figure 9 on page 22 and Figure 15 on page 23. Added: Table 18 on page 26, Figure 29 on page 27, Figure 30 on page 28, 14-Jun-2010 14 Figure 31 and Figure 32 on page 29. 11-Nov-2010 15 Modified: RthJC value for TO-220 Table 2 on page 5. Added: order codes L78M05CV-DG, L78M12CV-DG and L78M15CV-DG 08-Feb-2012 16 Table 25 on page 44. 09-Mar-2012 17 Added: order codes L78M08CV-DG and L78M09CV-DG Table 25 on page 44. 15-May-2012 18 Added: order codes L78M24CV-DG Table 25 on page 44. 19-Apr-2013 19 Removed: Available on request footnote 2 Table 25 on page 44. Part numbers L78MxxAB, L78MxxAC and L78MxxC changed to L78M. Updated the title and the features in cover page. Canceled Table 1.Device summary. 04-Jun-2014 20 Updated Section 3: Maximum ratings, Section 5: Electrical characteristics, Section 6: Typical performance and Section 8: Package mechanical data. Added Section 7: Applications information and Section 9: Packaging mechanical data. Minor text changes. Updated Section 8: "Package information" (DPAK package information changed 21-Mar-2017 21 from type F to type I). Minor text changes. 46/47 DocID2146 Rev 21

L78M IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2017 STMicroelectronics – All rights reserved DocID2146 Rev 21 47/47

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: S TMicroelectronics: L78M24ACDT L78M05ABDT L78M24ABDT L78M15ABDT L78M15ABV L78M09CV L78M15CV L78M12CV L78M24ABDT-TR L78M15CDT-TR L78M12CDT-TR L78M05CDT-TR L78M06CDT-TR L78M24CDT-TR L78M05ACDT-TR L78M06ABDT-TR L78M10ABDT-TR L78M05ABV L78M08CV L78M24CV L78M05CV L78M05CP L78M05CDT-1 L78M12ABDT-TR L78M15ABDT-TR L78M08ABDT-TR L78M09ABDT-TR L78M05ABDT- TR L78M12ACDT-TR L78M09CDT-TR L78M08CDT-TR L78M24ACDT-TR L78M15CV-DG L78M12CV-DG L78M15ABV-DG L78M08CV-DG L78M05ABV-DG L78M24CV-DG L78M09CV-DG L78M05CV-DG L78M08ABDT L78M10ABDT L78M06ABV L78M12ABDT L78M12ABDT-1 L78M08ABV L78M06ABDT L78M05ACDT