MC7818CT Datasheet | Vishay

Description These voltage regulators are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications including local, on-card regulation. These regulators employ internal current limiting, thermal shutdown, and safe-area pensation. With adequate heatsinking the MC78xx CT can deliver output currents in excess of 1.5 ampere. Although designed primarily as a fixed voltage regulator, these devices can be used with external ponents to obtain adjustable voltages with currents. Output Standard Application Input MC78xx Features - Output current in excess of 1.0 ampere - No external ponents required - Internal thermal overload protection - Internal short-circuit current limiting - Output transistor safe-area pensation - Output voltage offered in 2% tolerance Cin 0.33µF Co 0.1µF Notes: A mon ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage. xx = these two digits of the part number indicate output voltage. Cin is required if regulator is located an appreciable distance from power supply filter. Co is not needed for stability, however, it does improve transient response. Mechanical Data Case: TO-220 Package Case outline is on the back page. Internal Block Diagram Input 1 Current Generator Starting Circuit Reference Voltage Series Pass Element SOA Protection Error Amplifier Thermal Protection Output 3 GND 2 .. Document Number 74813 29-Nov-01 .. .vishay. 1 MC78xx CT Series Vishay Semiconductor Maximum Ratings Parameter Input Voltage Input Voltage (1) (2) (3) Ratings at 25°C ambient temperature unless otherwise specified. Symbol Vin Vin RθJC TJ Tstg Value 30 40 5 - 20 to +150 - 65 to +150 Unit V V °C/W °C °C Thermal Resistance Operating Junction Temperature Range Storage Junction Temperature...