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NJM2805
Low Dropout Voltage Regulator with Reset
! GENERAL DISCRIPTION The NJM2805 is a low dropout...
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 ...