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微芯片技术的mcp9501/2/3/4家庭设备温度开关
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Microchip Technology’s MCP9501/2/3/4 family devices are temperature switches with ±1°C （typical） accurate factory set output thresholds. These devices are ideal for high-power supply systems where an overtemperature protection circuit is needed. These devices do not require external components， consume 25 µA （typical）， and the factory set thresholds provide simplicity. In addition， this family of devices provides user-selectable +2°C and +10°C （typical） switch hysteresis， and various output configurations. The MCP9501/2 outputs switch for rising temperatures， while the MCP9503/4 devices switch for falling temperatures， with the relative hysteresis at the set thresholds. This family of devices is also available with an active-high， push-pull output （MCP9502/4） and an active-low， open-drain output （MCP9501/3）。 The push-pull output is ideal for a microcontroller interface， while the open-drain output can be used for level shifting， wired-OR configuration or as a heater on/off switch. The MCP9501/2/3/4 devices operate from a 2.7V to 5.5V supply. This family is available with the space-saving 5-lead SOT-23 package.
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