TSU5511YZPR

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Analog switches are created to selectively connect two circuits together, either at the signal ground plane or between two separately active voltage sources. This makes them an interesting multi-purpose component in a variety of analog designs. Likewise, specialized switches or multiplexers are designed for a specific purpose. The TSU5511YZPR is an example of a special purpose analog switch. Developed by Torex Semiconductor Ltd., these devices are used to manage current flow between power sources on portable electronic equipment.

Overview

The TSU5511YZPR is a specialized analog switch with an on-chip output transistor. It serves a dual purpose: 1) to switch multiple power sources to a single power supply and 2) introudce a current path between these sources. The package size of the device, 6.5mm x 9.0mm, makes it a perfect fit for use on small portable equipment. Additionally, the device uses a patented FET direct control circuit, which offers improved EMI performance, as well as low on-state resistance and low off-state leakage.

Application Fields

The TSU5511YZPR is designed for use in applications where multiple power sources are required to be connected to a single power supply for use on portable equipment. Examples of this type of equipment include mobile phones, digital cameras, and MP3 players. In addition, the device can be used in automotive applications, such as headlamps, taillights, and interior lighting. Lastly, the TSU5511YZPR can also be used in automotive and portable medical devices.

Key Features

The TSU5511YZPR has several features that make it desirable for use in a variety of applications. First, it has a wide operating voltage range of 2.7V to 5.5V. Second, it has an input forward voltage of 400mV, which enhances EMI performance. Third, it includes a Thermal Shut-down Circuit (TSD), which prevents the device from becoming excessively hot. Lastly, the device is capable of withstanding power surges up to 20V.

Working Principle

The TSU5511YZPR relies on an FET direct control circuit for switching applications. This circuit provides the device with the ability to maintain a low on-state resistance and a low off-state leakage. The device uses a CMOS logic circuit to perform the switching operation. The TSU5511YZPR is designed so that one power-source is always active, while the other sources are connected or disconnected depending on the switching operation. This ensures that there is always a current path between the power sources.

Conclusion

In conclusion, the TSU5511YZPR is a specialized analog switch that can be used to manage current flow between multiple power sources. It has a wide operating voltage range and low on-state resistance and off-state leakage. Additionally, it includes a Thermal Shut-down Circuit to prevent it from becoming excessively hot. The TSU5511YZPR is ideal for use on small portable electronic devices, automobiles, and medical devices.

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