Description
MAX690A/MAX692A/ MAX802L/MAX802M/ MAX805L Microprocessor Supervisory Circuits General .
The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L reduce the complexity and number of components required for power-supply monitoring and batterycontrol fun.
Features
* Precision Supply Voltage Monitor: 4.65V for MAX690A/MAX802L/MAX805L 4.40V for MAX692A/MAX802M
* Reset Time Delay: 200ms
* Watchdog Timer: 1.6s Timeout
* Battery-Backup Power Switching
* 200μA Quiescent Supply Current
* 50nA Quiescent Supply
Applications
* Battery-Powered Computers and Controllers
* Intelligent Instruments
* Critical μP Power Monitoring
Typical Operating Circuit
UNREGULATED DC 0.1µF
R1
R2 3.6V LITHIUM
BATTERY
REGULATED +5V
VCC RESET
PFI
MAX690A PFO MAX802L WDI
VBATT
VOUT
GND
VCC
RESET µP NMI I/O