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| NJM2801 Low Dropout Voltage Regulator with Reset s GENERAL DISCRIPTION The NJM2801 is a low dropout voltage regulator with reset function. It provides up to 150mA of logic supply, and the reset function monitors either input or output voltage of the regulator with 1% accuracy. It is suitable for local power supply and reset for small micro controller and other logic chips. s PACKAGE OUTLINE NJM2801F NJM2801U s PIN CONFIGURATION s FEATURES qOutput Voltage Accuracy Vo = 1.0% qReset Voltage Accuracy Vreset = 1.0% qReset Hold Time td = 10mS1.0mS qRipple Rejection 60dB typ. (f=1kHz) qQuiescent Current IQ=250A (typ.) qOutput Voltage Monitor type qOpen Collector Output qInternal Short Circuit Current Limit qInternal Thermal Overload Protection qBipolar Technology qPackage Outline SOT89 (5pin) / MTP5 1 2 3 5 4 MTP5 5 4 1.VIN 2.GND 3.VOR 4.Cd 5.VOUT 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN 1 2 3 SOT-89(5pin) s OUTPUT VOLTAGE/ DETECTION VOLTAGE Device Name Output Voltage Detection Voltage NJM2801F/U0543 5.0V 4.3V NJM2801F/U3328 3.3V 2.8V s EQUIVALENT CIRCUIT VIN VOR Thermal Protection VO Bandgap Reference GND Cd NJM2801 s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg (Ta=25C) UNIT V mW C C RATINGS +14 200 (MTP5) 350 (SOT-89) -40+85 -40+125 s ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1F, Co=1F (Vo2.6V: Co=2.2F) Ta=25C) PARAMETER SYMBOL TEST CONDITION Quiescent Current Regulator Block Output Voltage Output Current Line Regulation Load Regulation Dropout Voltage Ripple Rejection Output Voltage Temperature Coefficient Output Noise Voltage Reset Block Voltage Detection Hysteresis Voltage Low Level Output Voltage Output Leak Current On time Output Current Reset Output Delay Time Operation Voltage Limit VRT VRTH RORL IORH IORL td VOPL VIN=HL VIN=HLH VIN=VRT-0.5V, RL=100k VIN= VRT+0.5V VIN=VRT-0.5V, RL=0 VIN=(VRT-0.5V) (VRT+0.5V), Cd=0.1F VORL=0.4V Vo Io Vo/VIN Vo/Io VI_O RR Vo/T VNO Io=30mA Vo-0.3V VIN=Vo+1VVo+6V, Io=30mA Io=0100mA Io=60mA ein=200mVrms, f=1kHz, Io=10mA,Vo=3V Ta=085C, Io=10mA f=10Hz100kHz, Io=10mA, Vo=3V IQ Io=0mA MIN. - -1.0% 150 - - - - - - -1.0% - - 5 9 - TYP. 250 - 200 - - 0.10 60 50 45 MAX. 350 +1.0% - 0.10 0.03 0.18 - - - +1.0% UNIT A V mA %/V %/mA V dB ppm/C Vrms V mV mV A mA mS V - 100 - - 10 0.9 VRTx3% VRTx5% VRTx8% 300 0.1 - 11 - (note 1) The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage. NJM2801 s TIMING CHART VIN[V] VO t VO[V] VO VRTH VRT t VOR[V] VO td td td When the pull-up of the Vor is carried out to Vin through resistance. t NJM2801 s TEST CIRCUIT IQ VIN VO IOR NJM2801 0.1F VIN RL Cd GND VOR V 1.0F IOUT VOUT V 0.1F VOR s TYPICAL APPLICATIONS VIN VIN VO VOUT NJM2801 0.1F 100k 1.0F VOR Cd GND 0.1F VOR NJM2801 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. |
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