TPS76630D

The TPS76630D is a low dropout linear voltage regulator that offers superior performance and versatility in applications requiring up to 30V of output. It is a series of low-noise, small package, surface-mount adjustable devices that are designed to regulate a stable output voltage. The TPS76630D is suitable for a variety of applications, including mobile phones and portable devices that require high-current output and low-noise performance.

TPS76630D Application Field

The TPS76630D is mainly used in two areas. First, it is used in post-regulator applications, where its high-output current rating makes it well suited for powering a voltage regulator. For instance, it can be used in post-regulator systems for providing a steady voltage within a wide range for various applications. In this type of application, the TPS76630D has a low total ground-referenced output noise, making it suitable for high- efficiency power supplies. Additionally, its 5 mΩ current sense provides a precise, accurate output current limiting for applications with high current draw.

Second, it is also used in low dropout (L-DO) linear regulator applications such as mobile, portable, or rack-mounted electronic devices. It is suitable for providing a consistent output voltage despite varying input voltage levels. This feature is particularly important for devices relying on battery back-up. Moreover, its design eliminates the need for low-noise circuitry, which significantly reduces the complexity of the design process and shortens the time to market.

TPS76630D Working Principle

The TPS76630D is a monolithic integrated circuit and employs a three-terminal adjustable regulator topology known as a low dropout linear voltage regulator. The regulator consists of an error amplifier, a transistor network, and a pass transistor. The transistor network is designed to provide sufficient current to compensate for the base-emitter junction drop of the pass transistor with the output voltage adjusted by the output divider. The load current is provided to the pass transistor by the error amplifier monitoring the output voltage and controlling the current drive capability of the transistor network.

The adjustable regulator also provides an Over-Temperature Protection (OTP) circuit. The OTP circuit, integrated in the TPS76630D, monitors the junction temperature of the pass transistor and initiates shutdown of the device should the temperature exceed the specified limit. This feature protects the pass transistor and other components from potentially damaging operating conditions.

In summary, the TPS76630D is a three-terminal adjustable regulator integrated circuit that offers superior performance and convenience in applications requiring up to 30V of output. It is well-suited for post-regulator and low dropout linear regulator applications, due to its high-output current rating, low total ground-referenced output noise, and precisely accurate current sense. Furthermore, it integrates an Over-Temperature Protection circuit, providing additional protection and saving design time.