General Description

The MAX6361–MAX6364 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery control functions in microprocessor (µP) systems. The circuits significantly improve system reliability and accuracy compared to that obtainable with separate ICs or discrete components.

Their functions include µP reset, backup battery switchover, and power failure warning.

Features

♦ Low +1.2V Operating Supply Voltage (VCC or VBATT)

♦ Precision Monitoring of +5.0V, +3.3V, +3.0V, and +2.5V Power-Supply Voltages

♦ Debounced Manual Reset Input (MAX6361)

♦ Watchdog Timer with 1.6s Timeout Period (MAX6362)

♦ Battery-On Output Indicator (MAX6363)

♦ Auxiliary User-Adjustable RESET IN (MAX6364)

♦ Three Available Output Structures Push-Pull RESET, Open-Drain RESET, Open-Drain RESET

♦ RESET/RESET Valid Down to 1.2V Guaranteed (VCC or VBATT)

♦ Power-Supply Transient Immunity

♦ 150ms (min) Reset Timeout Period

♦ Small 6-Pin SOT23 Package

Applications

Computers

Controllers

Intelligent Instruments

Critical µP/µC

Power Monitoring

Fax Machines

Industrial Control

POS Equipment

Portable/Battery-Powered

Equipment