STTS424E02BDN3F Integrated Circuits (ICs)

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STTS424E02BDN3F application field and working principle

STTS424E02BDN3F is a member of STMicroelectronics’ STTS-TMRT (thermal management) family, which is specially designed for the management of temperature in a variety of ways for reliable, long-term operation of electronic equipment. STTS424E02BDN3F is made of an environmentally friendly lead-free material and is a 3-pin thermal protection device. It supports a wide operating temperature range of -40 to 125℃ and has excellent performance. Due to its multiple built-in functions, such as temperature protection, overcurrent protection, overvoltage protection and undervoltage protection, the STTS424E02BDN3F can help protect electronic equipment in a variety of ways.

Application:STTS424E02BDN3F is mainly used in thermal management applications, such as DC-DC voltage converter, server, GPU and ASICs. This device can also be used in embedded systems such as ARM microcontrollers and FPGAs, as well as in power supplies, AC-DC converters, automotive, electric vehicle, industrial and railway applications. Moreover, the device is suitable for detecting the junction temperature of the TO-263 type package.

Working Principle: STTS424E02BDN3F is basically an integrated temperature sensor with an internal resistor. This device has three pins, namely the Output pin, the Ground pin and the Input pin. The over-temperature alarm/trip point can be set by using the Output pin and the Input pin with external resistors. The Output pin can act as a logic output pin and can directly drive the logic circuit. The Ground pin is used to provide the common ground connection.

When the junction temperature rises over a certain level the internal resistance of the device increases. Correspondingly, the voltage at the Output and Input pins will increase. When this voltage reaches the over-temperature alarm/trip point pre-defined by the external resistance ratio, then an on/off function is activated at the Output pin. By connecting a signal circuit or warning lamp to the Output pin, you can be alerted to thermal over-temperature conditions in the system.

In addition, the STTS424E02BDN3F has an overcurrent protection function integrated in the same package. It can detect the current by sensing the voltage drop at its Output pin. In combination with an external resistor, this device can be used to set a maximum current for the system. This device can act as an overcurrent protection function to help protect the connected equipments from damage due to excessive current.

Lastly, it also has an overvoltage protection and an undervoltage protection, which together help protect the connected equipments against overvoltage, undervoltage, overcurrent and other conditions. By connecting an appropriate power supply voltage, the STTS424E02BDN3F can help protect the electronic equipment against any unexpected conditions.

In summary, the STTS424E02BDN3F is an integrated thermal management device, designed for temperature monitoring, overvoltage protection, undervoltage protection and overcurrent protection in embedded applications. It is the versatile device for electronic product designers who need a reliable and efficient temperature management solution.

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