DESCRIPTION

The DS1817 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power supply and processor to stabilize.

FEATURES

● Automatically restarts a microprocessor after power failure

● Maintains reset for 150 ms after VCC returns to an in-tolerance condition

● Reduces need for discrete components

● Precision temperature-compensated voltage reference and voltage sensor

● Accurate 5, 10 or 20 power monitoring

● 20 tolerance for use with 3.0-volt systems

● Low-cost TO-92 or space saving surface mount SOT-23 packages available

● Push-pull active high output

● Operating temperature -40°C to +85°C