1. Products
  2. Power Management
  3. Battery Management
  4. Battery Backup IC
  5. MAX690A


Features and Benefits

  • 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 Current in Battery-Backup Mode
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • Power-Fail Accuracy Guaranteed to ±2% (MAX802L/M)
  • Guaranteed Active-Low RESET Assertion to VCC = 1V
  • 8-Pin SO and DIP Packages

Product Details

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.

The parts differ in their reset-voltage threshold levels and reset outputs. The MAX690A/MAX802L/MAX805L generate a reset pulse when the supply voltage drops below 4.65V, and the MAX692A/MAX802M generate a reset below 4.40V. The MAX802L/MAX802M guarantee power-fail accuracies to ±2%. The MAX805L is the same as the MAX690A except that RESET is provided instead of active-low RESET.

All parts are available in 8-pin DIP and SO packages. The MAX690A/MAX802L are pin compatible with the MAX690 and MAX694. The MAX692A/MAX802M are pin compatible with the MAX692.


  • Battery-Powered Computers/Controllers
  • Critical µP Monitoring
  • Intelligent Instruments

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

MAX690A Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX690ACPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX690ACSA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX690ACSA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX690AEPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX690AESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX690AESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX690AESA/GG8 Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX690AMJA Material Declaration Reliability Data Ceramic Dual-In-Line, Narrow (0.3in)
MAX690AMJA/883B Material Declaration Reliability Data Ceramic Dual-In-Line, Narrow (0.3in)
Wafer Fabrication Data MAX690A Reliability Data

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