SM72240数据手册集成电路（IC）的监控器规格书PDF

描述 Description

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.

特性 Features

• Renewable Energy Grade
• Precise monitoring of 5V supply voltages
• Fully specified over temperature
-   −40°C to +125°C

• 100 ms minimum Power-On Reset pulse width, 190 ms typical:
-  Active-Low RESET Open Drain Output

• RESET Output valid for VCC ≥ 1V
• Low Supply Current, 6µA typical
• Power supply transient immunity
• Compatible with MAX811/812 applications