CMOS voltage detector IC for battery-operated portable devices
ELM97xxxxA
■ GENERAL DESCRIPTION
VOLTAGE DETECTOR
ELM 97xxxxA Series is a CMOS voltage detector IC for battery-operate...
Description
ELM97xxxxA
■ GENERAL DESCRIPTION
VOLTAGE DETECTOR
ELM 97xxxxA Series is a CMOS voltage detector IC for battery-operated portable devices. It consists of a very low-power-consumption reference voltage source, a comparator, an output driver, a hysteresis circuit, and detection voltage setting resistors. Output logic is positive, therefore output level is low when VDD is lower than detection voltage. It can be used as a reset controller in microcomputer-based systems. And it can be widely applied to the devices, such as battery checkers, switching circuit of back-up power source, power failure detectors, etc. Two output styles are available, N-ch opendrain and CMOS output. It is available in SOT-89 and SOT-23.
■ FEATURES
・ Low power operation ・ Low voltage operation ・ High accuracy of detection voltage ・ Low temperature coefficient ・ Very small package : TYP. 1.0 μ A (VDD = 1.5V) : Reset operation assured at 0.8V : ± 2.5% : TYP. -300ppm/℃ (Detection voltage < 2.0V) : TYP. -100ppm/℃ (Detection voltage ≧ 2.0V) : SOT-89, SOT-23
■ APPLICATION
・ Reset for microcomputer ・ Battery checker ・ Power failure detector ・ Switching of back-up power source
■ PIN CONFIGURATION
SOT-89
3
SOT-23
1 2 3 1 2
( TOP VIEW )
( TOP VIEW )
Pin No. 1 2 3
Pin Name OUT VDD VSS
Pin No. 1 2 3
Pin Name OUT VSS VDD
147
VOLTAGE DETECTOR ELM97xxxxA
■ SELECTION GUIDE
Symbol Ex a, b Detection Voltage C: N: A: B: A: 09 : VDETN = 0.9V 27 : VDETN = 2.7V 45 : VDETN = 4.5V CMOS Output N-ch Opendrain Output...
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