78HT305VC

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DC-DC converters, a type of converter, are used to convert a voltage or current from one DC voltage to another. The 78HT305VC converter is a high efficiency, step-down DC-DC converter with a wide input voltage range, low quiescent current, and high efficiency. It is suitable for industrial, computer and telecommunication applications.

The 78HT305VC converter has a wide input voltage range from 4.5V to 18V and a fixed output voltage of 3.3V. With its low quiescent current (typically less than 10mA), the 78HT305VC is ideal for battery operated applications. Its output current can be up to 500mA. The maximum efficiency of this converter is greater than 98%.

The 78HT305VC converter is a synchronous step-down DC-DC converter. The heart of the converter is an internal power MOSFET. The MOSFET is operated in constant frequency current mode (CFCM) which provides good ripple noise suppression. The MOSFET is driven by an oscillator running at a frequency of 250kHz. The MOSFET is turned off at the start of each switch cycle and turned on at a predetermined time. The peak current of the inductor is limited to an internally set maximum current value. At the end of the switch cycle, the output voltage is regulated by the error amplifier.

The 78HT305VC is also designed with many safety features for system protection. It includes an internal soft start circuit to minimize inrush current, an internal current limit circuit to prevent overload on the MOSFET, an over voltage protection circuitry to protect from output over voltage, and an under voltage lockout circuit which stops the converter from operating when the input voltage is too low.

In summary, the 78HT305VC is a high efficiency step-down DC-DC converter with a wide input voltage range, low quiescent current, and high efficiency. It can be used for many applications such as industrial, computer and telecommunication applications. The 78HT305VC is designed with many safety features for system protection.

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