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MC78M12 Dataheets PDF



Part Number MC78M12
Manufacturers Motorola
Logo Motorola
Description THREE-TERMINAL MEDIUM CURRENT POSITIVE FIXED VOLTAGE REGULATORS
Datasheet MC78M12 DatasheetMC78M12 Datasheet (PDF)

Three-Terminal Medium Current Positive Voltage Regulators The MC78M00/MC78M00A Series positive voltage regulators are identical to the popular MC7800 Series devices, except that they are specified for only half the output current. Like the MC7800 devices, the MC78M00 three–terminal regulators are intended for local, on–card voltage regulation. Internal current limiting, thermal shutdown circuitry and safe–area compensation for the internal pass transistor combine to make these devices remarkably.

  MC78M12   MC78M12



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Three-Terminal Medium Current Positive Voltage Regulators The MC78M00/MC78M00A Series positive voltage regulators are identical to the popular MC7800 Series devices, except that they are specified for only half the output current. Like the MC7800 devices, the MC78M00 three–terminal regulators are intended for local, on–card voltage regulation. Internal current limiting, thermal shutdown circuitry and safe–area compensation for the internal pass transistor combine to make these devices remarkably rugged under most operating conditions. Maximum output current, with adequate heatsinking is 500 mA. • No External Components Required • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting • Output Transistor Safe–Area Compensation • MC78M00A High Accuracy (±2%) Available for 5.0 V, 8.0 V, 12 V and 15 V • Previous Commerical Temperature Range has been extended to a Junction Temperature Range of –40°C to +125°C Representative Schematic Diagram 1.0 k 1.0 k Input 210 520 2.6 k 10 pF 300 3.6 k 6.4 k 6.7 V 16 k 1.0 k 3.0 k 5.6 k 100 200 300 40 pF 6.0 k 50 200 0.24 13 Output 2.0 k 3.9 k Order this document by MC78M00/D MC78M00 MC78M00A Series THREE–TERMINAL MEDIUM CURRENT POSITIVE FIXED VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA T SUFFIX PLASTIC PACKAGE CASE 221A (TO–220) Heatsink surface connected to Pin 2. Pin 1. Input 2. Ground 3. Output 1 2 3 1 3 DT SUFFIX PLASTIC PACKAGE CASE 369A (DPAK) 12 3 DT–1 SUFFIX PLASTIC PACKAGE CASE 369 (DPAK) Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. 6.0 2.8 k k Gnd This device contains 28 active transistors. DEVICE TYPE/NOMINAL OUTPUT VOLTAGE MC78M05AC MC78M05C MC78M06C MC78M08AC MC78M08C 5.0 V 5.0 V 6.0 V 8.0 V 8.0 V MC78M09C MC78M12AC MC78M12C MC78M15AC MC78M15C 9.0 V 12 V 12 V 15 V 15 V MC78M18C MC78M20C MC78M24C 18 V 20 V 24 V MOTOROLA ANALOG IC DEVICE DATA ORDERING INFORMATION Device Operating Temperature Range Package MC78MXXCDT MC78MXXACDT* MC78MXXCT MC78MXXACT* TJ = – 40° to +125°C DPAK TO–220 XX Indicates nominal voltage. * Available in 5.0, 8.0, 12 and 15 V devices. © Motorola, Inc. 1997 Rev 6 1 MC78M00 MC78M00A Series MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.) Rating Symbol Input Voltage (5.0 V–18 V) (20 V–24V) Power Dissipation (Package Limitation) Plastic Package, T Suffix TA = 25°C Thermal Resistance, Junction–to–Air Thermal Resistance, Junction–to–Case Plastic Package, DT Suffix TA = 25°C Thermal Resistance, Junction–to–Air Thermal Resistance, Junction–to–Case VI PD θJA θJC PD θJA θJC Operating Junction Temperature Range TJ Storage Temperature Range Tstg NOTE: ESD data available upon request. Value 35 40 Internally Limited 70 5.0 Internally Limited 92 5.0 +150 –65 to +150 Unit Vdc °C/W °C/W °C/W °C/W °C °C MC78M05C/AC ELECTRICAL CHARACTERISTICS (VI = 10 V, IO = 350 mA, –40°C < TJ < 125°C, PD ≤ 5.0 W, unless otherwise noted.) Characteristics Symbol Min Typ Max Unit Output Volt.


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