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说明

MCP809是一种电压监控设备，设计用于保持微控制器复位，直到系统电压达到适当水平并稳定下来。当电源电压降至安全工作水平以下时，它还起到保护作用，防止出现烧坏情况。MCP809具有CMOS推挽式输出，具有有源低复位功能，可选择七种不同的跳闸电压。它在扩展的工业温度范围（-40°C/+85°C）内运行。MCP809有SOT23-3封装。

特性

• Holds microcontroller in reset until supply voltage reaches stable operating voltage
• Resets microcontroller during power loss
• Precision monitoring of 3V, 3.3V and 5V systems
• Active low RESET pin (MCP809) or active high RESET (MCP810)
• Push-pull output
• Holds RESET for 350ms (typical)
• RESET to VDD = 1.0V
• Accuracy of +(-)125mV for 5V systems and +(-)75mV for 3V systems over temperature
• 45uA typical operating current
• Industrial (I): -40C to +85C

参数