TPS76925DBVR

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The Texas Instruments TPS76925DBVR is an adjustable, low-dropout (LDO)voltage regulator. It features low quiescent current, fast start-up, and low output noise. This device can provide an output voltage from 0.6V to 5.25V with 10mA minimum output current. The TPS76925DBVR is optimized with a low quiescent current of 25μA in light load mode for power-sensitive applications. The device has a low dropout voltage of 400mV at full load.

The TPS76925DBVR is ideal for applications like active cellphone cases which require various selectable operating voltages with low start-up current, minimal ripple, and low quiescent current. It also helps to reduce time-to-market by eliminating the cost and resource associated with developing power management solutions that require multiple external components.

Application Field

The TPS76925DBVR can be used in various applications including but not limited to:

• Cellphones
• Tablets
• Active cellphone cases
• Portable instruments
• Power management

Working Principle

The TPS76925DBVR is an adjustable linear regulator with an NMOS pass transistor. It uses a resistor divider network to set the output voltage and feedback loop to regulate it. Pulse-by-pulse current limit and overtemperature protection are available features. The TPS76925DBVR is controlled by a programming pin to allow the output voltage to be adjusted.

The TPS76925DBVR adjusts the output voltage by comparing it with the reference voltage at the feedback pins and driving the PMOS pass transistor accordingly. The PMOS transistor adjusts the voltage between the input and output pins to maintain a regulated output voltage. The amount of voltage drop across the PMOS transistor is dependent on the current going through it.

The TPS76925DBVR also has a temperature compensation circuit which compares the chip temperature with a reference temperature and adjusts the output voltage to compensate for temperature variations. This helps to maintain a stable output voltage over varying temperatures.

The TPS76925DBVR is designed to meet the requirements of designs that require low start-up current and fast output voltage regulation. Its adjustable output voltage feature makes it ideal for devices that require multiple operating voltages. Its low quiescent current in light load mode and pulse-by-pulse current limit guarantee power-efficient applications.

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