TPS72730DSET

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Introduction: The TPS72730DSET is a linear voltage regulator from Texas Instruments that provides an adjustable output voltage for battery charging and other applications. The device provides an output range from 0.6V to 5.5V and offers several protection features including under voltage lockout ( UVLO ) and over voltage protection.

Application Fields: The TPS72730DSET has a low quiescent current and is suitable for a variety of battery-operated systems. It is ideal for Li-ion and Li-Pol cell-based applications such as cellular phones, PDAs, digital cameras, and laptop computers. The device is also suitable for any low voltage system with a voltage source below five volts.

Working Principle: The TPS72730DSET is a voltage regulation integrated circuit that is powered from an input supply voltage ranging from 2.6V to 6V and provides an adjustable output voltage range from 0.6V to 5.5V. This device works in a two-stage process by regulating first the voltage (VOS) and then the current (IOS). In the first stage, the device is configured to regulate the output voltage by providing an initial base resistor (RB) connected between the output voltage pin and the centre point of the voltage regulation feedback loop. This base resistor is used to transfer voltage from the output voltage pin to the centre point. Then, the device is configured to regulate current in the second stage in order to maintain the output voltage. This regulation is accomplished by using a base resistor (RS) connected between the voltage feedback node and the emitter of a current regulating transistor. The resistance value of the base resistor determines the current output of the device.

Conclusion: The TPS72730DSET is a modern voltage regulator from Texas Instruments that provides an adjustable output voltage for battery charging and other applications. It is powered from an input voltage ranging from 2.6V to 6V and offers features such as Under Voltage Lockout, Over Voltage Protection and integrated current regulation. The device is suitable for Li-ion and Li-Pol cell-based applications such as digital cameras, cell phones, PDAs and laptop systems. Its low quiescent current feature make it a suitable choice for battery-operated systems.

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