MAX709L Datasheet PDF - Maxim Integrated

●General Description

●The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. They significantly improve system reliability and accuracy compared

●to separate ICs or discrete components. These parts provide four functions:

●1) A reset output during power-up, power-down, and brownout conditions.

●2) Battery-backup switching for CMOS RAM, CMOS µP, or other low-power logic.

●3) A reset pulse if the optional watchdog timer has not been toggled within 1.6sec.

●4) A 1.25V threshold detector for power-fail warning or low-battery detection, or to monitor a power supply other than +5V.

●Features

●♦Precision Supply-Voltage Monitor:

●   4.65V for MAX690A/MAX802L/MAX805L

●   4.40V for MAX692A/MAX802M

●♦Reset Time Delay – 200ms

●♦Watchdog Timer – 1.6sec Timeout

●♦Battery-Backup Power Switching

●♦200µA Quiescent Supply Current

●♦50nA Quiescent Supply Current in Battery Backup Mode

●♦Voltage Monitor for Power-Fail or Low-Battery Warning

●♦Power-Fail Accuracy Guaranteed to ±2% (MAX802L/M)

●♦Guaranteed RESETAssertion to VCC= 1V

●♦8-Pin SO and DIP Packages

●Applications

●Battery-Powered Computers and Controllers

●Intelligent Instruments

●Automotive Systems

●Critical µP Power Monitoring