KA78RH33

www.fairchildsemi.com KA78RH33 Semi Low Dropout Voltage Regulator Features Fixed Output Voltage of +3.3V Space Saving SMD types of DPAK 1V(Typ) Dropout at Io=800mA Output Current of 800mA Thermal Shutdown Protection Over Current Protection Output trimmed to +/-1% Tolerance No minimum Load Requirement Description The KA78RH33 is a +3.3V fixed Low Dropout Voltage Regulator specifically designed for use in low voltage operation. The maximum load current is 0.8A and the dropout voltage is guaranteed to be 1V(Typ). The Dropout Voltage varies with load current. The regulator consists of composite PNP-NPN pass transistors. D-PAK 1 1. GND 2. Vout 3.Vin Internal Block Diagram 3.Vin CURRENT GENERATOR PROTECTION CIRCUIT 2.Vout 1.GND Rev. 1.0.1 ©2001 Fairchild Semiconductor Corporation KA78RH33 Absolute Maximum Ratings Parameter Power Supply Input Voltage Output Load Current Junction Temperature Operating Junction Temperature Storage Temperature Symbol Vin Io Tj Topr Tstg Value 15 800 150 -25 ~ 125 -55 ~ 150 Unit V mA °C °C °C Temperature Characteristics Parameter Temperature Coefficient of Output Voltage Symbol △ Vo/ △ T Value + / -0.02 Unit % / °C Electrical Characteristics (Refer to the test circuit. Vin= 5V, Co=10uF, Ta = 25°C, unless otherwise specified.) Parameter Output Voltage Output Voltage Line Regulation Load Regulation Ripple Rejection Dropout Voltage Quiescent Current Temperature Coefficient of Output Voltage Peak Output Current Output Noise V...