0
ACTIVE
Rating |
Catalog |
Number of supplies monitored |
1 |
Threshold voltage 1 (typ) (V) |
2.93 |
Features |
Ease-of-use, Undervoltage monitor only |
Reset threshold accuracy (%) |
5 |
Iq (typ) (mA) |
0.015 |
Output driver type/reset output |
Active-low, Push-Pull |
Time delay (ms) |
240 |
Watchdog timer WDI (s) |
None |
Supply voltage (min) (V) |
1.2 |
Supply voltage (max) (V) |
5.5 |
Operating temperature range (°C) |
-40 to 105 |
SOT-23 (DBZ)-3-6.9204 mm² 2.92 x 2.37
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The MCP809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.
The function of the MCP809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold. The MCP809 has an active-low RESET output, while the MCP810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15µA, the MCP809/810 are ideal for use in portable equipment. The MCP809/MCP810 are available in the 3-pin SOT23 package.
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