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| NJM2801 PRELIMINARY Low Dropout Voltage Regulator with Reset 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 2% accuracy. It is suitable for local power supply and reset for small micro controller and other logic chips. PACKAGE OUTLINE NJM2801F** NJM2801U** FEATURES PIN CONFIGURATION ( MTP-5 ) 1 2 3 4 5 * Output Voltage Accuracy Vo = 2.2% * Reset Output Voltage VORH = 3.3V(typ.) * Reset Hold Time td = 10mS2.5mS * Ripple Rejection RR=60dB (typ.) * Quiescent Current IQ=300A(max.) * Open Collector Output * Bipolar Technology * Output Voltage Monitor type * Package Outline SOT89(5Pin)/MTP5 * Protection Circuit 1.Current limit circuit 2.Thermal overload protection circuit 1.VIN 2.GND 3.VOR 4.Cd 5.VOUT ( SOT-89 ) 5 4 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN 1 2 3 Output Voltage/Reset Validated Voltage PART NO NJM2801-0543 Output Voltage 5.0V Reset Validated Voltage 4.3V Block Diaglam VIN Thermal Protection VO VOR Bandgap Reference GND Cd NJM2801 PRELIMINARY Absolute Maximum Ratings PARAMETER Input Voltage Power Dissipation Operating Temperature Storage Temperature Range SYMBOL VIN PD Topr Tstg (Ta=25C) RATINGS UNIT +14 V 200 (MTP5) mW 350 (SOT-89) -40+85 C -40+125 C ELECTRICAL CHARACTERISTICS (VIN=Vo+1V , CIN=0.1F, Co=1F ( Vo2.6V: Co=2.2F ) Ta=25C ) PARAMETER Quiescent Current Regulator Block Output Voltage Output Current Line Regulation Load Regulation Dropout Voltage Ripple Rejection Output Voltage Temperature Coefficient SYMBOL IQ Vo Io Vo/VIN Vo/Io VI_O RR Vo/T VNO VRT VRTH RORL IORH IORL td VOPL Io=0mA Io=30mA Vo-0.3V CONDITION MIN. - -2.2% 150 - - - - - - -2% - - 5 9 - TYP. 200 - 200 - - 0.10 60 50 45 - 100 - - 10 0.9 MAX. 300 +2.2% - 0.10 0.03 0.18 - - - +2% 300 0.1 - 11 - UNIT A V mA %/V %/mA V dB ppm/C 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 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 Output Noise Voltage Reset Block Voltage Detection Hysteresis Voltage Low Level Output Output Leak Current On time Output Current Reset Output Delay Operation Voltage Limit Vrms V mV mV VRTx3% VRTx5% VRTx8% A mA mS V The above specification is a common specification for all output voltages. Therefore, it may be different from individual specification for a specific output voltage. NJM2801 PRELIMINARY 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 PRELIMINARY TEST CIRCUIT IQ VIN VO IOR NJM2801 0.1F VIN RL Cd GND VOR V 1.0F IOUT VOUT V 0.1F VOR TYPICAL APPLICATIONS VIN VO VOUT VIN NJM2801 0.1F 100k 1.0F VOR Cd GND 0.1F VOR The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuit in this data book 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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