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MC78T12ACT Datenblatt(PDF) 1 Page - ON Semiconductor |
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MC78T12ACT Datenblatt(HTML) 1 Page - ON Semiconductor |
1 / 12 page MC78T00 Series THREE–AMPERE POSITIVE FIXED VOLTAGE REGULATORS ORDERING INFORMATION DEVICE TYPE/NOMINAL OUTPUT VOLTAGE MC78T05 MC78T08 5.0 V 8.0 V MC78T12 MC78T15 12 V 15 V Order this document by MC78T00/D T SUFFIX PLASTIC PACKAGE CASE 221A 3 1 2 Pin 1. Input 2. Ground 3. Output Heatsink surface is connected to Pin 2. MC78TXXCT MC78TXXBT# MC78TXXACT Package Device Operating Temperature Range MC78TXXABT# XX Indicates nominal voltage. * 2% regulators available in 5, 12 and 15 V devices. # Automotive temperature range selections are avail- able with special test conditions and additional tests. Contact your local Motorola sales office for information. VO Tol. 4% 2%* 4% 2%* TJ = 0° to +125 °C TJ = – 40° to +125 °C Plastic Power Plastic Power SEMICONDUCTOR TECHNICAL DATA 1 MOTOROLA ANALOG IC DEVICE DATA Three-Ampere Positive Voltage Regulators This family of fixed voltage regulators are monolithic integrated circuits capable of driving loads in excess of 3.0 A. These three–terminal regulators employ internal current limiting, thermal shutdown, and safe–area compensation. Devices are available with improved specifications, including a 2% output voltage tolerance, on AC–suffix 5.0, 12 and 15 V device types. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents. This series of devices can be used with a series–pass transistor to supply up to 15 A at the nominal output voltage. • Output Current in Excess of 3.0 A • Power Dissipation: 25 W • No External Components Required • Output Voltage Offered in 2% and 4% Tolerance* • Thermal Regulation is Specified • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting • Output Transistor Safe–Area Compensation MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) Rating Symbol Value Unit Input Voltage (5.0 V – 12 V) Input Voltage (15 V) VI 35 40 Vdc Power Dissipation and Thermal Characteristics Plastic Package (Note 1) TA = +25°C Thermal Resistance, Junction–to–Air TC = +25°C Thermal Resistance, Junction–to–Case PD R θJA PD R θJC Internally Limited 65 Internally Limited 2.5 °C/W °C/W Storage Junction Temperature Tstg +150 °C Operating Junction Temperature Range (MC78T00C, AC) TJ 0 to +125 °C NOTES: 1. Although power dissipation is internally limited, specifications apply only for PO ≤ Pmax, Pmax = 25 W. Simplified Application Input Output Cin* 0.33 µFCO** MC78TXX A common ground is required between the input and the output voltages. The input voltage must remain typically 2.2 V above the output voltage even during the low point on the input ripple voltage. XX these two digits of the type number indicate voltage. ** Cin is required if regulator is located an appreciable distance from power supply filter. ** (See Applications Information for details.) ** CO is not needed for stability; however, it does improve transient response. © Motorola, Inc. 1996 Rev 1 |
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