KA78RM33

www.fairchildsemi.com KA78RM33 Features Low Dropout Voltage Regulator Description The KA78RM33 is a low-dropout voltage regulator suitable for various electronic equipment. It provide constant voltage power source with surface mount type package (D-PAK). dropout voltage of KA78RM33 is below 0.6V in full rated current(0.5A). This regulator has various function such as over current protection, thermal shut down and SOA (Safe operating Area) protection. D-PAK 0.5A / 3.3V Output low dropout voltage regulator Low dropout voltage (Max. 0.6V) Over current protection, Thermal shutdown SOA protection, Shortcircuit protection 1 TO-220 1 1. Vin 2. GND 3. Vout Internal Block Digram Q1 Vin 1 3 Vout Current Generator Thermal Shutdown Protection SOA Protection Short Circuit Protection Bandgap Reference Error Amp. R1 Output Drive R2 GND 2 3 Rev. 1.0.1 ©2001 Fairchild Semiconductor Corporation KA78RM33 Absolute Maximum Ratings Parameter Input Voltage Output Current Thermal Resistance Junction-Air Power Dissipation Junction Temperature Operating Temperature Symbol Vin Value 20 0.5 110 Interally limited 150 -25~ + 125 Unit V Α °C/W − °C °C Remark No Heatsink - IO RθJA Pd Tj TOPR Electrical Characteristics (Vin = 5V, IO= 0.25A, Ta = 25°C , unless otherwise specified) Parameter Output Voltage Load Regulation Line Regulation Ripple Rejection Ratio Dropout Voltage Quiescent Current Peak Current Output Noise Voltage Temperature Coefficient of Output Voltage Symb...