TLV7112525DSET

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TLV7112525DSET Application Field and Working Principle

The TLV7112525DSET is a low dropout linear voltage regulator that is often implemented in point of load voltage regulation applications, where an input and output voltage differential of as low as 50 mV is desired. It is part of the TI series linear regulators that provide high efficiency, small solution size and extended temperature range operations.

Application

The regulator features very low dropout voltage and negative current capability with a low internal quiescent current, resulting in improved efficiency and lower power dissipation when used in low voltage and low power applications.

• The TLV7112525DSET can be used for point-of-load regulation.
• It also supports applications such as notebook computer point-of-load power supply, automotive on-board microprocessors, as well as other low-power microprocessor applications that require low dropout and minimum output ripple.
• It is suitable for interfacing to 5V systems, being able to provide voltages down to 1.25V and allows the use of a single input voltage rail instead of two.

Working Principle

The TLV7112525DSET provides a regulated output voltage with a low dropout voltage. It features a power PMOS pass transistor as its control element, which requires a minimum control voltage of 1.3V and a maximum voltage of 6V. This low control voltage allows the device to be connected directly to the base of a standard NPN transistor, making it well suitable for load regulation applications.

The regulator contains sets of internal circuitry for over current protection, thermal shutdown and remote shutdown which improve the reliability of the system. When the current in the device exceeds the rated current limit or the die temperature of the device exceeds the rated thermal limit or if the shutdown pin is asserted, the device enters shutdown mode and disconnects the load from the input voltage.

The device also contains and internal current limit circuit that limits the current through the device to the rated current limit. This ensures protection of the device by limiting the current in case of excessive load current. The regulator also features a wide input voltage range, with an input voltage range of 4.5V to 18V.

Conclusion

In conclusion, the TLV7112525DSET is a low dropout linear voltage regulator which is suitable for point of load voltage regulation applications. Its low dropout voltage and negative current capability allows it to be used in low voltage and low power applications, with improved efficiency and lower power dissipation. It features protection features, such as over current protection, thermal shutdown and remote shutdown, to ensure the secure and safe operation of the system.

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