TPV6823 Low Voltage Supervisory Circuit with Watchdog and Manual Reset

Description 

The TPV6823 is a supervisory circuit that monitors  power supply voltage levels and provides a power-on  reset signal.  

It also has on-chip watchdog timer, which can give  out a reset signal if the microprocessor fails to strobe  watchdog timer within a preset timeout period.  

A reset signal can also be asserted by an external  manual reset input. 

The reset and watchdog timeout periods are fixed at  200 ms (typical) and 1.6 sec (typical), respectively. 

The TPV6823 is available in a 5-lead SOT-23  package and typically consumes only 2.2 μA, suitable  for use in low power, portable applications.

Features 

 Precision low voltage monitoring 

 200 ms (typical) reset timeout 

 Watchdog timer with 1.6 sec timeout 

 Manual reset input 

 Reset output stage 

 Push-pull active-low 

 Low power consumption: 2.2 μA 

 Guaranteed reset output valid to VCC = 1 V 

 Power supply glitch immunity 

 Specified from −40°C to +125°C 

 5-lead SOT-23 package 

Applications 

 Microprocessor systems 

 Computers 

 Controllers 

 Intelligent instruments 

 Portable equipment