Overview
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.
Applications
- Battery-Powered Computers/Controllers
- Critical µP Monitoring
- Intelligent Instruments
Product Categories
Product Lifecycle
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.
Documentation & Resources
-
MAX690A Reliability Data1/12/2023
Product Recommendations
MAX690A Companion 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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