TPS71745DSER

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The TPS71745DSER is a high-performance linear voltage regulator manufactured by Texas Instruments. It is a low-dropout (LDO) regulator that delivers excellent transient response, low dropout voltage, and low quiescent current. The TPS71745DSER is ideal for powering reference circuits, voltage rails, and any other application requiring an extremely low output regulation tolerance. It is suitable for a wide range of supply voltages, and features an adjustable output voltage option.

Features

The TPS71745DSER features an input voltage range of up to 28 V, with an adjustable output voltage range of up to 15 V. It offers an RDS(ON) capacitor of 2.5 mΩ, maximum quiescent current of 180 µA and low dropout voltage of only 70 mV at 1 A. It also offers a fast transient response, and can handle up to 1 A of load current. Additionally, the device offers short circuit protection, and reverse current protection. It is available in the industry-standard 5-pin SOT406-3 package, and includes an integrated thermal protection circuit.

Application Fields

The TPS71745DSER is a feature-rich, low-power, low-dropout LDO voltage regulator and is ideal for a wide range of applications. Its small size and low quiescent current make it suitable for a variety of portable applications, including cell phones, PDAs, digital cameras, and other handheld devices. It can also be used in audio applications such as synthesizers, amplifiers, and mixers. Additionally, the device can be used in automotive electronics such as electric vehicle power systems, motor control systems, and engine control systems.

Working Principle

The TPS71745DSER is a low-dropout linear regulator that operates by combining a reference voltage with an active trans-impedance feedback circuit to ensure low-output regulation tolerance. This trans-impedance feedback circuit operates to provide the regulator with an increased bandwidth and improved line regulation. Additionally, the device includes an internal trim resistor that is used to control the output voltage. The trim resistor is adjusted to set the internal reference voltage, which is then compared to an external reference voltage to determine the output voltage.

The TPS71745DSER is also designed with a power-good output that indicates the programmed output voltage is within ± 1%. This is vital in applications where precise voltage regulation and high accuracy are critical. Additionally, the device includes an integrated thermal protection circuit that monitors the junction temperature and shuts down the device, if it exceeds safe operating temperature limits.

Conclusion

The TPS71745DSER is a high-performance linear voltage regulator that offers excellent transient response, low dropout voltage, and low quiescent current. It is suitable for a wide range of supply voltages and features an adjustable output voltage option. The device is ideal for powering reference circuits, voltage rails and other applications requiring precise voltage regulation and high accuracy. Additionally, it features an integrated thermal protection circuit and a power-good output indicating precise output performance. With its wide range of features and quick transient response, the TPS71745DSER is an ideal solution for a variety of applications.

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