Details, datasheet, quote on part number: KA78RH33
CategoryPower Management => Regulators => Linear Regulators => LDO (Low Drop Out)
Description0.8A Fixed 3.3V Low Dropout Voltage Regulator (LDO)
CompanyFairchild Semiconductor
DatasheetDownload KA78RH33 datasheet
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Features, Applications


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


The 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 be 1V(Typ). The Dropout Voltage varies with load current. The regulator consists of composite PNP-NPN pass transistors.

Parameter Power Supply Input Voltage Output Load Current Junction Temperature Operating Junction Temperature Storage Temperature Symbol Vin Io Tj Topr Tstg Value Unit mA °C

Parameter Temperature Coefficient of Output Voltage Symbol Vo/ T Value / -0.02 Unit / °C

(Refer to the test circuit. Vin= = 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 Voltage Symbol Vout Rline Rload RR Vdrop Iq Vo/ T Ipk Vn Conditions Io=10mA, Tj=25°C Vin f=120Hz, Io=500mA Vin = 800mA Vin = 10mA Vin to 10KHz Min. Typ. Max. Unit V mA mV/°C mA µVrms

An input capacitor, Cin is not necessary for stability, but it will improve the overall performance


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