TPS77615PWP

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TPS77615PWP Application Field and Working Principle

The TPS77615PWP is a linear voltage regulator designed for power management applications in which input-voltage-regulation is required. The device is a low dropout (LDO) three-terminal regulator that provides very high performance, low quiescent current, and low dropout voltage. The device permits very tight regulation while delivering up to 1.5 A of output current. The device is designed to maintain an output voltage over a wide current range, thus eliminating the need for external voltage-sense circuitry.

The TPS77615PWP is available in an 8-pin LLP with a total height of 1.2 mm and is offered in a 1.5 V, 1.8 V, 2.5 V, 2.85 V, 3.3 V, 3.5 V, 3.6 V, and 4.15 V fixed output voltage models. The regulator is stable with 1.0 μF ceramic output capacitance. The device requires 1.5 mm of clearance from the internal thermal pad for optimum thermal performance.

Application Fields

The TPS77615PWP is ideal for applications where space is at a premium or ultra-low quiescent current is needed, including:

• Battery-Powered Devices: The regulator\'s ultra-low operating voltage reduces supply current drain and extends battery life.
• Handheld Electronics: The regulator\'s small size helps to reduce the overall system size of a handheld device.
• Networking and Telecommunications: The device provides increased efficiency and energy savings.
• Consumer Electronics: The device delivers higher performance in a smaller package.

Working Principle

The TPS77615PWP is a dropout linear regulator based on a three-terminal design. The device uses the dropout voltage of the P-Channel MOSFET to control the output voltage. The voltage controlled by the regulator is determined by the feedback voltage, which is compared to a reference voltage.

The regulator\'s output voltage is determined by the feedback voltage and the feedback resistors. The regulator adjusts the MOSFETs gate voltage to maintain the output voltage specified by the feedback network. As the load current increases, the regulator increases the gate voltage to improve the P-Channel MOSFETs on-resistance. This keeps the output voltage regulated over a wide range of load current. The regulator includes a thermal shutdown protection feature.

The regulator is available in a wide range of fixed output voltage models and is capable of supplying up to 1.5 A of output current. The device is designed to maintain an output voltage over a wide current range, thus eliminating the need for external voltage-sense circuitry. In addition, the regulator is stable with only 1.0 μF ceramic output capacitance.

The regulator\'s high performance, small size, and wide input voltage range make it ideal for a variety of applications. The regulator is offered in a space-saving 8-pin LLP package with a total height of only 1.2 mm and excellent thermal performance. The device features ultra low quiescent current, fast transient response, and low noise output.

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