TPS79428DGNT

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TPS79428DGNT is a voltage regulator module that provides Constant Voltage (CV) and Constant Current (CC) control modes. It is part of the family of Linear Voltage Regulator products from Texas Instruments. This voltage regulator is qualified over the industrial temperature range of -40 to +85 °C. Its excellent output characteristics minimize the need for additional components.

The TPS79428DGNT has an adjustable output voltage range of 0.8V to 10.0V and a maximum adjustable output current of 2 Amps. It provides a regulated output voltage with very low output voltage noise, low dropout voltage, low ground current, and high accuracy. Its low operating current and low quiescent current enable power savings.

The TPS79428DGNT can be used to regulate the output voltage or current regardless of input voltage changes, or as a current source with overload protection. It provides excellent thermal performance for safety and reliability. The device provides over current protection, over temperature protection, 100 ms auto recovery and output short circuit protection. It is available in a 5-pin TO-220 package.

The application field of the TPS79428DGNT is extremely diverse, since it can be used in a wide range of battery powered applications, consumer electronics and industrial systems. Examples of applications which use this voltage regulator include power management systems in portable battery-powered devices, notebook PCs, cellular phones, LCD TVs, 3D TVs, game consoles, DSL modems and routers, POS terminals, digital cameras, and printers. It can also be used in industrial-level applications such as industrial measurement, optical communication systems and automotive systems. The working principle of the TPS79428DGNT is simple yet important. The voltage regulator consists of internal voltage-referencing circuitry and an external p-channel MOSFET. When a voltage is applied to the module, the internal voltage reference monitors a feedback signal. If the feedback signal is out of range, the internal switching transistor turns on and off rapidly, regulating the output voltage of the device to the desired level. The adjustable voltage and current are set with an external resistor.

In summary, the TPS79428DGNT is an adjustable low dropout linear voltage regulator for a wide range of battery-powered applications. Its low current consumption, low quiescent current, low output voltage noise, and over current protection make it ideal for a variety of applications. The device is qualified over the industrial temperature range of -40 to +85 °C and provides excellent thermal performance for safety and reliability. It can be used to regulate the output voltage or current regardless of input voltage changes, or as a current source with overload protection.

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