TPS79516DCQRG4

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The TPS79516DCQRG4 is an advanced linear voltage regulator designed for High-Voltage/Low-Quiescent Current/Lowripple operations. It has a wide range of applications, such as digital circuits, motor control, automotive, and medical.

The TPS79516DCQRG4 regulates an input voltage that can range from 0.8V to 28V. Its output voltage can be adjusted from 0.8V to 1.25V with a ±2% accuracy. The device features 150mA output current, 1.5μA ultra-low quiescent current and −3dB/octade ripple rejection.

The TPS79516DCQRG4 also offers short-circuit protection and overtemperature protection. The short-circuit protection prevents excessive current during fault conditions. The overtemperature protection feature prevents component damage due to sustained high temperatures.

To ensure stable operation of the device, it has the Pre-Biased Load Compensation. This control feature prevents output voltage fluctuations due to the capacitive load. The device also has Adaptive Time-out output circuitry that prevents long-term latch-up at the output.

The core of the TPS79516DCQRG4 consists of a voltage reference, error amplifier, power MOSFET and current limiting circuit. At the start of the operation, the internal voltage reference generates a constant reference voltage. This reference voltage is compared with the input voltage through an error amplifier.

The voltage difference is amplified by the error amplifier which is then used to control the power MOSFET. The power MOSFET is responsible for regulating the output voltage. Since the output voltage can exceed the reference voltage, the device is connected to an external current sensing resistor.

The TPS79516DCQRG4 also has internal over-current protection which monitors the output current. If the device senses a current that is higher than the pre-programmed limit, the power MOSFET will be switched off. This provides protection for the system.

In case of an open circuit, the output voltage is monitored by an external resistor connected in series with the output. This resistor limits the current while the open circuit is being detected. When the device senses an open circuit, the power MOSFET will be switched off. This will protect the system from damage.

The TPS79516DCQRG4 includes an integrated Schottky diode to protect the system during transient conditions. This diode limits the surge current that is generated when the system is turned on.

The TPS79516DCQRG4 is a versatile linear voltage regulator designed for applications requiring high-voltage and low-current operation. Its features make it well-suited for a wide range of applications such as digital circuits, motor control, automotive, and medical. The device offers high accuracy, high current capacity, and low quiescent current. It also provides protection against short circuit, overtemperature, and open circuit conditions.

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