NJM2800 PRELIMINARY Low Dropout Voltage Regulator with Reset ■ PACKAGE OUTLINE ■ 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. 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 ( MTP-5 ) Vo = ±2.2% Vreset = ±2.0% td = 10mS±2.5mS IQ=300µA (max.) 1 5 2 3 SOT89 (5Pin) / MTP5 1.Current limit circuit 2.Thermal overload protection circuit 4 ( SOT-89 ) 5 4 ■ OUTPUT VOLTAGE/RESET VALIDATED VOLTAGE PART NO Output Voltage NJM2800-2528 NJM2800-3342 2.5V 3.3V 1 Reset Validated Voltage 2.8V 4.2V 2 3 ■ BLOCK DIAGLAM VIN VO Thermal Protection VOR Bandgap Reference GND Cd 1.VIN 2.GND 3.VOR 4.Cd 5.VOUT 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN NJM2800 PRELIMINARY ■ ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage SYMBOL VIN Power Dissipation Operating Storage (Ta=25°°C) 200 (MTP5) PD Temperature Temperature RATINGS +14 Topr Tstg 350 (SOT-89) −40∼+85 −40∼+125 UNIT V mW °C °C ■ ELECTRICAL CHARACTERISTICS (VIN=Vo+1V , CIN=0.1µµF, Co=1µµF ( Vo≤2.6V: Co=2.2µµF ) Ta=25°°C ) PARAMETER SYMBOL MIN. TYP. MAX. UNIT Io=0mA − 250 350 µA −2.2% 150 − 200 +2.2% V − − 0.10 mA %/V 0.03 %/mA 0.18 V Quiescent Current Regulator Block Output Voltage Vo Io=30mA Output Current Io Vo-0.3V Line Regulation ∆Vo/∆VIN VIN=Vo+1V∼Vo+6V, Io=30mA − Load Regulation ∆Vo/∆Io − Dropout Voltage ∆VI_O Io=0∼100mA Io=60mA − − 0.10 Ripple Rejection RR Ein=200mVrms, f=1kHz, Io=10mA,Vo=3V − 60 − dB Ta=0∼85°C, Io=10mA − ±50 − ppm/°C VNO f=10Hz∼100kHz, Io=10mA, Vo=3V − 45 − µVrms Reset Block Voltage Detection VRT VIN=H→L −2% − +2% 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 Output Voltage Temperature Coefficient Output Noise Voltage Reset Output Delay Ti Operation Voltage Limit IQ CONDITION ∆Vo/∆T td VOPL VIN=(VRT-0.5V)→ (VRT+0.5V), Cd=0.1µF VORL=0.4V VRT×3 VRT×5 VRT×8 100 300 − 0.1 − − 5 − − 9 10 11 − The above specification is a common specification for all output voltages. Therefore, it may be different from individual specification for a specific output voltage. 0.9 − V mV mV µA mA mS V NJM2800 PRELIMINARY ■ TIMING CHART VIN VRTH VRT VO t VO VO t VOR td td ∗ VOR is the case where a pull-up is carried out to VIN through resistance. td t NJM2800 PRELIMINARY ■ TEST CIRCUIT IQ VIN VO IOR NJM2800 RL 0.1µF Cd VIN VOR 1.0µF GND V 0.1µF IOUT V VOUT VOR ■ TYPICAL APPLICATIONS VIN VIN VO NJM2800 100kΩ 0.1µF Cd VOUT VOR 1.0µF 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. This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.