General Description
The MAX16033–MAX16040 supervisory circuits reduce the complexity
and number of components required for power-supply monitoring and
battery control functions in microprocessor (µP) systems. The
devices significantly improve system reliability and accuracy
compared to other ICs or discrete components. The MAX16033–MAX16040
provide µP reset, backup-battery switchover, power-fail warning,
watchdog, and chip-enable gating features.
Features
♦ Low 1.2V Operating Supply Voltage
♦ Precision Monitoring of 5.0V, 3.3V, 3.0V, and 2.5V Power-Supply
Voltages
♦ Independent Power-Fail Comparator
♦ Debounced Manual-Reset Input
♦ Watchdog Timer, 1.6s Timeout
♦ Battery-On Output Indicator
♦ Auxiliary User-Adjustable RESETIN
♦ Low 13µA Quiescent Supply Current
♦ Two Available Output Structures:
Active-Low Push-Pull Reset
Active-Low Open-Drain Reset
♦ Active-Low Reset Valid Down to 1.2V
♦ Power-Supply Transient Immunity
♦ 140ms (min) Reset Timeout Period
♦ Small 2mm x 2mm, 8-Pin and 10-Pin µDFN Packages
Applications
Portable/Battery Powered Equipment
POS Equipment
Critical µP/µC Power Monitoring
Set-Top Boxes
Controllers
Computers
Fax Machines
Industrial Control
Real-Time Clocks
Intelligent Instrument
