MC78M24

www.fairchildsemi.com MC78MXX/LM78MXX 3-Terminal 0.5A Positive Voltage Regulator Features Output Current up to 0.5A Output Voltages of 5, 6, 8, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area (SOA)Protection Description The MC78MXX/LM78MXX series of three-terminal positive regulators are available in the TO-220/D-PAK package with several fixed output voltages making it useful in a wide range of applications. TO-220 GND 1 D-PAK GND 1 1. Input 2. GND 3. Output Internal Block Digram INPUT 1 SERIES PASS ELEMENT OUTPUT 3 CURRENT GENERATOR SOA PROTECTION R1 STARTING CIRCUIT REFERENCE VOLTAGE ERROR AMPLIFIER R2 THERMAL PROTECTION GND 2 Rev. 1.0.5 ©2002 Fairchild Semiconductor Corporation MC78MXX/LM78MXX Absolute Maximum Ratings Parameter Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Case (Note1) TO-220 (Tc = +25°C) Thermal Resistance Junction-Air (Note1, 2) TO-220 (Ta = +25°C) D-PAK (Ta = +25°C) Operating Junction Temperature Range Storage Temperature Range Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow Symbol VI VI RθJC RθJA TOPR TSTG Value 35 40 2.5 66 92 0 ~ +150 -65 ~ +150 Unit V V °C/W °C/W °C °C Electrical Characteristics (MC78M05/LM78M05) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF) Parame...