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| NJM2800 PRELIMINARY Low Dropout Voltage Regulator with Reset GENERAL DISCRIPTION The NJM2800 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 NJM2800F** NJM2800U** PIN CONFIGURATION FEATURES * Output Voltage Accuracy * Reset Voltage Accuracy * Reset Hold Time * Quiescent Current * Open Collector Output * Bipolar Technology * Input Voltage Monitor type * Package Outline * Protection Circuit Vo = 2.2% Vreset = 2.0% td = 10mS2.5mS IQ=300A (max.) ( MTP-5 ) 1 2 3 4 5 1.VIN 2.GND 3.VOR 4.Cd 5.VOUT SOT89 (5Pin) / MTP5 1.Current limit circuit 2.Thermal overload protection circuit ( SOT-89 ) 5 4 OUTPUT VOLTAGE/RESET VALIDATED VOLTAGE PART NO NJM2800-2528 NJM2800-3342 Output Voltage 2.5V 3.3V Reset Validated Voltage 2.8V 4.2V 1 2 3 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN BLOCK DIAGLAM VIN Thermal Protection VO VOR Bandgap Reference GND Cd NJM2800 PRELIMINARY ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Power Dissipation Operating Storage Temperature Temperature SYMBOL VIN PD Topr Tstg RATINGS +14 200 (MTP5) 350 (SOT-89) -40+85 -40+125 (Ta=25C) UNIT V mW C 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% TYP. 250 - 200 - - 0.10 60 50 45 - MAX. 350 +2.2% - 0.10 0.03 0.18 - - - +2% 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 Ti Operation Voltage Limit Vrms V mV mV VRTx3 VRTx5 VRTx8 100 300 - 0.1 - - 5 - - 9 10 11 - 0.9 - 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. NJM2800 PRELIMINARY TIMING CHART VIN VRTH VRT VO t VO VO t VOR td td td VOR is the case where a pull-up is carried out to VIN through resistance. t NJM2800 PRELIMINARY TEST CIRCUIT IQ VIN VO IOR NJM2800 0.1F VIN RL Cd GND VOR 1.0F IOUT V VOUT V 0.1F VOR TYPICAL APPLICATIONS VIN VIN VO VOUT NJM2800 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. This datasheet has been download from: www..com Datasheets for electronics components. |
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