NJM2805

www.DataSheet4U.com NJM2805 Low Dropout Voltage Regulator with Reset ! GENERAL DISCRIPTION The NJM2805 is a low dropout voltage regulator with reset function. It provides up to 300mA of logic supply, and the reset function monitors 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. ! FEATURES " Output Voltage Accuracy Vo ±1.0% " Reset Voltage Accuracy VRT ±1.0% " Reset Hold Time td = 10mS±1.0mS " Ripple Rejection 70dB typ. (f =1kHz) " Quiescent Current IQ = 250µA (typ.) " Output Voltage Monitor type " Open Collector Output " Internal Short Circuit Current Limit " Internal Thermal Overload Protection " Bipolar Technology " Package Outline SOT-89 -5 ! OUTPUT VOLTAGE/ DETECTION VOLTAGE Device Name VOUT VDET NJM2805U2923 2.9V 2.3V NJM2805U3329 3.3V 2.9V NJM2805U0543 5.0V 4.3V ! EQUIVALENT CIRCUIT ! PACKAGE OUTLINE NJM2805U ! PIN CONFIGURATION 5 2 4 1 2 3 PIN FUNCTION 1.VOUT 2.GND 3.Cd 4.VOR 5.VIN NJM2805U VIN VOR Thermal Protection VOUT Bandgap Reference GND Cd Ver.2004-01-19 -1- NJM2805 ! ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage Power Dissipation Operating Temperature Storage Temperature VIN PD Topr Tstg (Ta=25°C) UNIT V mW °C °C RATINGS +14 350 -40 ∼ +85 -40 ∼ +125 ! ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=1µF (Co=2.2µF: Vo≤2.6V) Ta=25°C) PARAMETER SYMBOL TEST CONDITION Quiescent Current Regulator Block Output Voltage Output Current Line ...