TPS54353PWPR

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The TPS54353PWPR is a DC-DC switching regulator designed to operate over a wide range of voltages, with very few external components. It is an integrated dual-phase Buck synchronous buck converter housed in a small, low profile 8-pin 0.3” by 1.3” HSO-8 package.

It features a 1MHz switching frequency which allows it to provide over 90% efficiency at low output currents, while still maintaining the flexibility of having a wide input voltage range. It also features integrated soft-start, to prevent inrush current from damaging components, overcurrent protection, thermal shutdown and open loop fault protection. The TPS54353PWPR is capable of providing ±2A continuous and ±4A peak currents.

The TPS54353PWPR is ideally suited for applications such as mobile phones and other battery powered portable devices, where board space is limited and design time is of the essence. It can also be used in processor core voltage regulation in PCs, embedded systems, networking, and communication systems. Due to its low output noise and wide input voltage range, it is also suitable for industrial and automotive applications.

The TPS54353PWPR’s working principle is straightforward. It takes in a DC input voltage, typically between 1.8V and 5.5V, and regulates it to an adjustable output voltage of up to 2.9V. This is done by switching the current on and off at a variable frequency via an integrated N-channel power MOSFET and a built-in sensing circuit, which monitors the output voltage and adjusts the switching frequency accordingly. This high-frequency modulation of the input voltage produces a low-ripple output voltage, and the minimal number of required external components allows for a very low output noise.

The TPS54353PWPR is a highly efficient DC-DC switching regulator capable of providing reliable, low noise and stable output voltage across a wide range of input voltages. It is ideal for mobile phones, embedded systems, networking, and communication systems, as well as many industrial and automotive applications. With its integrated overcurrent, soft-start, thermal shutdown and open loop fault protection, it is an attractive option for designers who are looking to save time, space, and cost.

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