The SM72240 microprocessor supervisory circuit monitors the power supplies in microprocessor and digital systems. It provides a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset.
The SM72240 asserts a reset signal whenever the supply decreases below the factory-programmed reset threshold. Reset will be asserted for at least 100ms even after VCC rises above the reset threshold.
The SM72240 has an active-low open-drain RESET output.
The SM72240 is suitable for monitoring 5V. With a low supply current of only 6µA, the SM72240 is ideal for use in portable equipment. The SM72240 is available in the 5-pin SOT-23 package.
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|# of supplies monitored|
|Threshold Voltage 1 (typ) (Typ) (V)|
|Iq (Typ) (uA)|
|Output Driver Type / Reset Output|
|Reset Threshold Accuracy (%)|
|Time Delay (ms)|
|Watchdog Timer WDI (sec)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
| 3.08 |
| Active-low |
|-40 to 125|
|0.93 | 1ku|
|Sample & Buy|