0
ACTIVE
Rating |
Catalog |
Number of supplies monitored |
1 |
Threshold voltage 1 (typ) (V) |
2.32, 3.08, 4.63 |
Features |
Ease-of-use, Manual reset capable, Undervoltage monitor only |
Reset threshold accuracy (%) |
2.5 |
Iq (typ) (mA) |
0.006 |
Output driver type/reset output |
Active-low, Open-drain |
Time delay (ms) |
190 |
Watchdog timer WDI (s) |
None |
Supply voltage (min) (V) |
1 |
Supply voltage (max) (V) |
5.5 |
Operating temperature range (°C) |
-40 to 125 |
SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8
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The LM3722/LM3723/LM3724 microprocessor supervisory circuits monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset.
The LM3722/LM3723/LM3724 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 LM3722 has an active-low RESET push-pull output. The LM3723 has an active-high RESET push-pull output. The LM3724 has an active-low open-drain RESET output.
Three standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 2.5V supply voltages. Additional reset voltages are also available; contact Texas Instruments for details.
With a low supply current of only 6µA, the LM3722/LM3723/LM3724 are ideal for use in portable equipment. The LM3722/LM3723/LM3724 are available in the 5-pin SOT-23 package.
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