TPS72516KTTT

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TPS72516KTTT Application Field and Working Principle

The TPS72516KTTT is an ultra-low quiescent current, low dropout (LDO) linear voltage regulator designed for use in ultra-portable systems such as mobile phones, tablets, medical equipment and other hand-held devices. It features an integrated low-power comparator for system power-on management and a built-in soft-start circuit for improved transient response.

TPS72516KTTT is a dual-channel, single-ended interface regulated voltage regulator, with both adjustable and fixed voltage outputs, providing a flexible power management solution. It provides current outputs up to 500mA with very low quiescent current (TYP 0.5uA).

It can be used in a wide variety of applications, such as notebooks and tablet PCs, portable measurement equipment, battery-powered systems and POS terminals. Its small footprint and extremely low quiescent current design make it ideal for use in applications or systems where power saving and space are critical.

Working Principle of TPS72516KTTT

The TPS72516KTTT uses a linear regulator single internal switch architecture. The regulated voltage output is generated by connecting a reference voltage to the feedback resistor divider. The current is regulated based on the measured differential voltage in order to maintain the regulated output voltage.

The TPS72516KTTT has a built-in internal error amplifier, regulator comparator and transistor switch. The error amplifier senses the output voltage and compares it with the reference voltage. It provides feedback to the driver stage, which in turn adjusts the output accordingly.

The output of the regulator is then connected to a load, either directly or indirectly. Any current drawn by the load is compared to the reference voltage and the switch is adjusted to ensure the load current is within the specified tolerance.

The TPS72516KTTT also includes a soft-start pin, which allows the output voltage to be brought up slowly with a reduced inrush current when compared to a traditional regulator. This eliminates voltage droop and ensures stability in high-power applications.

Conclusion

The TPS72516KTTT is an ultra-low quiescent current, low dropout linear voltage regulator designed for use in ultra-portable systems. It features an integrated low-power comparator for system power-on management, a built-in soft-start circuit for improved transient response, and current outputs up to 500mA with very low quiescent current. It can be used in a wide variety of applications, from notebooks and tablets, to medical equipment and POS terminals, making it an excellent choice for low-power systems where power saving and space is critical.

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