78SRH-3.3/2-C

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DC-DC converters are electronic components that are used to convert a direct current (DC) voltage into a different DC voltage. They are commonly used in a variety of applications, including automotive, medical, aerospace and industrial applications. The 78SRH-3.3/2-C is a DC-DC converter designed for low-power applications such as battery backup systems. In this article we will discuss the application field and working principle of the 78SRH-3.3/2-C.

The 78SRH-3.3/2-C is a synchronous step-down switching regulator power converter that is capable of converting a voltage between 3.5VDC and 24VDC input to a 3.3V output at up to 2A. It is an ideal solution for many applications where low cost and high efficiency power delivery are required. The 78SRH-3.3/2-C can also be used as a low-dropout regulator (LDO) with a precision output voltage of 3.3V. It features an on-board over-current protection which shuts down the converter when the output current exceeds an adjustable threshold.

The 78SRH-3.3/2-C DC-DC converter is typically used in low-power applications where the input voltage is higher than the output voltage. It is commonly used in battery backup systems, portable medical electronics, automotive electronics, communication systems, and other applications. It is designed to be extremely efficient, with high power conversion efficiencies up to 91%. The small form factor and low-profile components make it an attractive solution for applications where space is limited.

The working principle behind the 78SRH-3.3/2-C is based on pulse width modulation (PWM). In operation, the converter inputs an unregulated DC voltage and generates an output voltage that is regulated to the desired level. It does this by comparing the output voltage level with an internal voltage reference, and then modulating the duty cycle of the converter\'s switching circuit accordingly. By maintaining a constant duty cycle, the output voltage will remain at its desired level over a wide range of input voltages.

One of the advantages of the 78SRH-3.3/2-C is its low component count. It requires only 10 external components for operation, making it much more cost-effective than other DC-DC converters of similar power ratings. Additionally, it features a low standby current of only 10μA, making it ideal for applications where power consumption needs to be minimized. In addition to its low cost and power efficiency, the 78SRH-3.3/2-C also features an on-board soft-start feature that prevents inrush currents, as well as adjustable current-limit and thermal protection.

The 78SRH-3.3/2-C is a versatile DC-DC converter that is suitable for a variety of low-power applications. It is an ideal solution for battery backup systems, portable medical electronics, automotive electronics, communication systems, and other applications that require a reliable power supply with high efficiency and low cost. With an on-board soft-start feature, adjustable current limit, and thermal protection, the 78SRH-3.3/2-C is an excellent solution for low-power applications requiring a convenient, cost-effective, and efficient power supply.

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