TPS2085D

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Power management integrated circuits (PMICs) are often used to provide a reliable means of controlling and distributing electrical power in a variety of applications. A power distribution switch is a device used to provide control and protection functions to a circuit by controlling the flow of current through a load. The TPS2085D is a power distribution switch manufactured by Texas Instruments (TI). It is a monolithic integrated circuit (IC) with two independent power switches, each providing overload, overvoltage, and short-circuit protection.

The TPS2085D is designed to be used in applications where isolation, fault protection, and power sequencing are needed. The device is capable of providing high current and low on-resistance withstanding up to 120V across the switches. It also has a low quiescent current and a wide operating temperature range from -40C to 125C.

The TPS2085D operates by connecting two low on-resistance power MOSFETs between the power supply and the load. The MOSFETs can carry a maximum continuous current of 5A each. When the device is turned on, the MOSFETs are turned on and a controlled current can be passed through the load. The device also includes two current limiting resistors which provide current limiting protection to the MOSFETs.

The TPS2085D provides two independent overvoltage protection (OVP) features. The first is a programmable overvoltage shutdown threshold that will shut down the device when the voltage exceeds a threshold determined by the OVP resistor. The second is an overcurrent shutdown that will automatically shut down the device if the load current exceeds a predetermined limit.

In addition, the TPS2085D has a separate enable/disable input that can be used to enable or disable the power switches depending on the application. The device incorporates a hysteretic threshold for overcurrent and undervoltage protection, and has an undervoltage lockout (UVLO) that will shut down the device if the supply voltage drops below a threshold determined by the UVLO resistor.

The TPS2085D also incorporates a load driver circuit that is capable of driving both high and low voltage loads. This load driver is capable of driving up to a 5A continuous load and includes a variety of protection features such as output current protection, overtemperature protection, and short-circuit protection. The device also includes an internal overvoltage protection circuit that will shut down the device if the output voltage exceeds a predetermined threshold.

The TPS2085D offers excellent performance for a variety of applications. It has a wide operating temperature range and provides overload, overvoltage, and short-circuit protection. The device incorporates a load driver circuit for high and low voltage loads, as well as hysteretic overcurrent and undervoltage protection and an internal overvoltage protection circuit. All these features make the TPS2085D a great choice for power distribution switch and load driver applications.

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