- Accurate monitoring of 2.5V, 3.3V and 5V supply voltages
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Specify the operating temperature
Industrial grade: -40 °C to +85 °C
Extended: -40 °C to +125 °C
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Minimum 100 ms power-on reset pulse width, 190 ms typical:
Low Active Reset Output^ (LM3722)
Active-High Reset Output (LM3723)
Active Low^ RESET Open-Drain Output (LM3724)
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Guarantee that ^RESET outputs a valid VCC ≥ 1V
- Low supply current, 6μA typical
- Power supply transient immunity
- Compatible with MAX811/812 applications
illustrate
The LM3722/LM3723/LM3724 of the microprocessor supervisory circuit monitors the power supply of the microprocessor and digital system. They provide reset microprocessors for power-up, power-down, undervoltage conditions, and manual reset.
The LM3722/LM3723/LM3724 asserts that the reset signal decreases as long as the voltage is below the factory-programmed reset threshold. The reset will be asserted at least above 100 ms, even at VCCReset threshold.
There is an active LM3722 low^RESET push-pull output. The LM3723 has a highly effective reset push-pull output. There is an active LM3724 low open-drain reset output^.
Three standard reset voltages are available to monitor the appropriate 5V, 3.3V, and 2.5V supply voltages. Other reset voltages are also available; For more information, please visit National Semiconductor.
With a low supply current of only 6μA, the LM3722/LM3723/LM3724 is ideal for portable devices. The LM3722/LM3723/LM3724 are available in a 5-pin SOT23 package.
apply
- Microprocessor systems
- Computer
- controller
- Smart meters
- Portable/battery-powered devices
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