TPS78928DBVT

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TPS78928DBVT Application Field and Working Principle

The TPS78928DBVT is a linear voltage regulator that is mainly used in products that require low-voltage power supply, such as mobile phones, tablets, and other handheld products. This device offers a wide input voltage range of 2.3V to 20V and provides a stable output voltage of 1.2V. It also has an adjustable voltage range of 0.5V-2.2V with a load current up to 1.45A. Furthermore, it has a very low dropout voltage of 0.4V at 1.4A.

The TPS78928DBVT integrated circuit contains two internal N-Channel MOSFETs, one is used as P-channel MOSFET and the other one is used as N-channel MOSFET. The two MOSFETs together provide an ideal linear voltage regulation solution. In addition, the device also features an enable/disable function and is capacitively coupled for enhanced overall line transient immunity.

The TPS78928DBVT integrated circuit includes internal current-limiting and thermal shut-down protection to protect the system from operation beyond its design limits. The thermal shut-down circuit monitors the die temperature and disables operation when the die reaches a high temperature. The current-limiting feature limits the output current when the input-output differential voltage drops below a predetermined level.

The TPS78928DBVT works on the principle of linear voltage regulation. In this technique, a voltage reference is utilized as a comparator between the input voltage and the output voltage thus maintaining a constant output voltage when the input supply changes. The device is able to achieve very low dropout voltages of 0.4V at 1.4A which gives it a high efficiency of up to 93%.

The TPS78928DBVT is widely used in products that require low-voltage power supply such as mobile phones, tablets, and other handheld products. It has an adjustable output voltage range of 0.5V-2.2V and a maximum load current of 1.45A. Moreover, it has a very low dropout voltage of 0.4V at 1.4A and a high efficiency of up to 93%. Its internal current-limiting and thermal shut-down protection make it suitable for use in a wide variety of applications.

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