NJM2801 PRELIMINARY Low Dropout Voltage Regulator with Reset ■ GENERAL DISCRIPTION ■ PACKAGE OUTLINE 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. NJM2801F** NJM2801U** ■ PIN CONFIGURATION ■ FEATURES • Output Voltage Accuracy Vo = ±2.2% • Reset Output Voltage VORH = 3.3V(typ.) • Reset Hold Time td = 10mS±2.5mS • Ripple Rejection RR=60dB (typ.) • Quiescent Current IQ=300µA(max.) • Open Collector Output • Bipolar Technology • Output Voltage Monitor type • Package Outline SOT89(5Pin)/MTP5 • Protection Circuit 1.Current limit circuit ( MTP-5 ) 1 5 2 3 4 ( SOT-89 ) 5 4 2.Thermal overload protection circuit 1 ■ Output Voltage/Reset Validated Voltage PART NO Output Voltage NJM2801-0543 5.0V Reset Validated Voltage 4.3V ■ Block Diaglam VIN VO Thermal Protection VOR Bandgap Reference GND Cd 1.VIN 2.GND 3.VOR 4.Cd 5.VOUT 2 3 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN NJM2801 PRELIMINARY ■ Absolute Maximum Ratings PARAMETER Input Voltage Power Dissipation SYMBOL VIN PD Operating Temperature Storage Temperature Range Topr Tstg (Ta=25°C) RATINGS UNIT +14 V 200 (MTP5) mW 350 (SOT-89) −40∼+85 °C −40∼+125 °C ■ ELECTRICAL CHARACTERISTICS (VIN=Vo+1V , CIN=0.1µF, Co=1µF ( Vo≤2.6V: Co=2.2µF ) Ta=25°C ) PARAMETER SYMBOL CONDITION MIN. TYP. MAX. UNIT Quiescent Current Regulator Block Output Voltage IQ Io=0mA − 200 300 µA Vo Io=30mA -2.2% +2.2% V Output Current Io Vo-0.3V 150 − 200 mA Line Regulation ∆Vo/∆VIN VIN=Vo+1V∼Vo+6V, Io=30mA − − − 0.10 %/V Load Regulation ∆Vo/∆Io − ∆VI_O − − 0.10 %/mA Dropout Voltage Io=0∼100mA Io=60mA 0.03 0.18 V Ripple Rejection RR Ein=200mVrms, f=1kHz, Io=10mA,Vo=3V − 60 − dB Ta=0∼85°C, Io=10mA − ±50 − ppm/°C − 45 − µVrms −2% − +2% V Output Voltage Temperature Coefficient ∆Vo/∆T Output Noise Voltage VNO f=10Hz∼100kHz, Io=10mA, Vo=3V Reset Block Voltage Detection VRT VIN=H→L Hysteresis Voltage VRTH VIN=H→L→H Low Level Output Output Leak Current RORL IORH VIN=VRT-0.5V, RL=100kΩ VIN= VRT-0.5V On time Output Current IORL VIN=VRT-0.5V, RL=0Ω Reset Output Delay Operation Voltage Limit td VOPL VIN=(VRT-0.5V)→ (VRT+0.5V), Cd=0.1µF VORL=0.4V VRT×3% VRT×5% VRT×8% − − 5 mV 100 − 300 0.1 mV − 11 mA 9 − 10 − 0.9 − 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. µA mS NJM2801 PRELIMINARY ■ TIMING CHART VIN[V] VO t VO[V] VO VRTH VRT t VOR[V] VO td td ∗When the pull-up of the Vor is carried out to Vin through resistance. td t NJM2801 PRELIMINARY ■ TEST CIRCUIT IQ VIN VO IOR NJM2801 RL 0.1µF Cd VIN V VOR 1.0µF GND V 0.1µF IOUT VOUT VOR ■ TYPICAL APPLICATIONS VIN VIN VO NJM2801 VOUT 100kΩ 1.0µF 0.1µF Cd VOR VOR GND 0.1µF 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.