S24SE05004NDFA Power Supplies - Board Mount

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DC-DC converters are essential components of power electronic systems. They enable the transformation of DC power from one voltage to another, or from one current output to another. To make sure that these converters work efficiently, it is necessary to properly design their external components and operating algorithms. The S24SE05004NDFA is a DC-DC converter designed for low-power applications. This article covers the application fields and working principle of the S24SE05004NDFA.

Application Field of S24SE05004NDFA

The S24SE05004NDFA is a low voltage DC-DC converter designed for powering and controlling small electronic systems that require variable voltage power supplies. It is ideally suited for mobile applications such as radio handsets, tablet computers, personal digital assistants (PDAs) and GPS navigation systems. It is also suitable for other small electronic products such as digital cameras, MP3 players and cordless headsets. The S24SE05004NDFA provides a high efficiency in a very small form factor, making it an ideal power solution for these applications.

Working Principle of S24SE05004NDFA

The S24SE05004NDFA works by regulating the output voltage and current. It uses an integrated pulse width modulation (PWM) DC/DC converter as its power element, which is driven by a dedicated output-sensing amplifier. The output voltage can be programmed between 1.8V and 5V with an accuracy of ±1%. The output current can be adjusted between 0mA and 400mA. The integrated PWM converter operates at a high frequency of 1.4MHz, which means that the S24SE05004NDFA can achieve fast transient response with minimum power loss.

The device includes several features to ensure reliable operation. These features include a narrow voltage range, current-mode control, internal soft start, input under-voltage lockout, and output short-circuit protection. The PWM converter is also protected against excessive current by a built-in thermal shutdown circuit. Additionally, the ESD protection of the S24SE05004NDFA is also of commendable standard in case of electrical surges.

The S24SE05004NDFA also offers a wide range of convenience features. These features include an integrated power-on reset circuit, a precise enable input, and a power good indication signal output. It also contains an alternate shutdown heartbeat input, which allows the module to operate at on/off rates of up to 6kHz. All these features make the S24SE05004NDFA a user-friendly and cost-effective power solution for low-power applications.

Conclusion

In conclusion, the S24SE05004NDFA is a highly efficient DC-DC converter designed for powering and controlling small electronic systems that require variable voltage power supplies. It offers a wide range of features to ensure reliable operation, including current-mode control, internal soft start, input under-voltage lockout, and output short-circuit protection. Combined with its small form factor, the S24SE05004NDFA is ideal for mobile applications such as radio handsets, tablet computers, PDAs and GPS navigation systems, as well as other small electronic products such as digital cameras, MP3 players and cordless headsets.

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