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
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
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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