ELM7C3793xxxxA CMOS voltage detector with dual input watchdog timer

ELM7C3793 series is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fail-safe function for various application systems. The standard detection voltages are 3.0V, 3.7V, 4.2V and 4.5V; ELM7C3793 series can also be made as semi-custom IC within the range of 1.6V to 5.0V by 0.1V step.

Detection voltage with hysteresis function.
Integrated dual input watchdog timer.
Watchdog timer with stop function(inhibit pin).
Independent setting on watchdog monitoring time and reset time.
Detect accurate
supply voltage drop
Low current consumptionTyp.31µV
PackageSOP-8 150mil
SOP-8 208mil
Reset for Microprocessor, etc.
Power voltage monitoring IC (Reset IC) ELM 7C series)
This product is alternative parts that “C” company have discontinued a selling.Please contact us once, if you have trouble with parts procurement.
In addition, since ELM7C3771xxxA/ELM7C377342xA is new product developed in-house, the power consumption is a quarter of the conventional product.

Absolute Maximum Ratings

Power supplyVcc6.5V
Input voltage:CK1 Vck1Vss-0.3 to Vcc+0.3V
Input voltage:CK2 Vck2Vss-0.3 to Vcc+0.3V
Input voltage:INH VinhVss-0.3 to Vcc+0.3V
Reset output voltage (RESET_B)Voh,VolVss-0.3 to Vcc+0.3V
Reset output current (RESET_B)Ioh, Iol-10 to 10mA
Power dissipationPd300(SOP-8 150mil)
300(SOP-8 208mil)
Operating temperatureTop-40 to +85°C
Storage temperatureTstg-55 to +125°C

Block diagram