TPS73701DCQ

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TPS73701DCQ is a low-dropout (LDO) voltage regulator. It offers a wide operating input voltage range from 1V to 6.5V, a low quiescent current of 1.2 μA, and a maximum output current of ± 250 mA. The TPS73701DCQ is designed to provide a regulated output voltage at 20% lower than the input voltage, making it ideal for use in 1.8V, 2.5V, and 3.3V system applications. The device features current-limiting, over-temperature protection, and reverse-voltage protection, making it a robust solution for precision, low-Voltage, low-QUIscent current applications.

TPS73701DCQ application field covers, but not limited to, portable and battery-powered systems, memory card, automotive and consumer electronics, industrial, medical and telecom systems and applications.

TPS73701DCQ provides the flexibility to adjust the output voltage and current levels through external resistors. A minimum of two resistors on the external feedback pins is required to program the TPS73701DCQ output voltage range of 1V to 6.5V. The current-limit set-point and over-temperature protection can also be mildy adjusted through external resistors. The device is ideal for low power Voltage regulator circuits that require high output accuracy and stability.

The TPS73701DCQ works using a simple regulation principle. It senses the input voltage and compares it to a reference voltage. Depending on the ratio between these two voltages, it makes a decision about the gate or supply voltage of a Power MOSFET. This MOSFET then regulates the output voltage. The device is designed to work with low dropout (LDO) voltage regulators.

To ensure accurate regulation, a PNP-NPN pair of bipolar transistors is used in the TPS73701DCQ. The left-side transistor is used as a constant current source and the right-side transistor is used as a voltage amplifier. The output voltage of the regulator is then adjusted to its set voltage level by varying the amount of current sourced by the PNP transistor.

The TPS73701DCQ has temperature compensation for improved accuracy at extreme temperatures. This is done by adding a band gap reference circuit which is thermally coupled to the junction of the PNP-NPN transistors. This way, the operation of the regulator is not affected by temperature changes, and its output voltage remains constant up to the device’s temperature rating.

In summary, the TPS73701DCQ is a low-dropout linear voltage regulator with a wide operating voltage range, low quiescent current, and a maximum output current of ±250 mA. It is ideal for low power applications that require high accuracy and stability. The device has industry-standard features such as current-limiting, over-temperature protection, and reverse-voltage protection, making it a robust and reliable choice for precision, low-Voltage, low-QUIscent current applications.

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