电压监控，阀值电压=4.38V
3-Pin Microcontroller Power Supply Supervisor
The 809/IMP810 are 3.0V, 3.3V and 5.0V power supply supervisor circuits optimized for low-power microprocessor µP, microcontroller µC and digital systems. The IMP809/810 are improved drop-in replacements for the Maxim MAX809/810 and feature 60% lower supply current.
Key Features
◆Improved Maxim MAX809/MAX810 replacement
— Lower supply current…6µA
— 80% lower maximum supply current
◆Monitor 5V, 3.3V and 3V supplies
◆140ms min. reset pulse width
◆Active-low reset valid with 1.1V supply IMP809
◆Small 3-pin SOT-23 package
◆No external components
◆Specified over full temperature range
— – 40°C to 105°C
Applications
◆Embedded controllers
◆Battery operated systems
◆Intelligent instruments
◆Wireless communication systems
◆PDAs and handheld equipment