76000696

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DC/DC Converters

DC/DC converters are electronic circuits that convert the Direct Current (DC) voltage from a higher-voltage power supply to a lower one. They are widely used in a variety of applications, from automotive systems to consumer electronics.

76000696 Application Field and Working Principle

The 76000696 DC/DC converter is an integrated, low power, wide input voltage range (2.7V to 5.5V) converter. It is suitable for powering low voltage systems such as cellular phones, portable medical and industrial systems, and other battery powered devices. The integrated solution makes it a cost effective solution for these applications.

The 76000696 is a step-down dc-to-dc converter, which takes the input voltage and converts it into a constant regulated output voltage. The output voltage is set using an external reference voltage which is applied to the REF pin. The output current is limited to a maximum of 500mA.

The converter operates in two modes, Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM). PFM mode is used in light load conditions (typically <70% of the maximum load) when the switching frequency is kept constant. PWM mode is used for heavier loads, where the switching frequency is varied to maintain a constant output voltage.

The switching frequency is also kept constant and the output voltage is regulated using pulse width modulation. The on-time duration is varied based on the output voltage and load conditions to maintain a constant output voltage. The converter also has over-current and thermal shut down protection.

The converter is also equipped with a soft start function which ensures that the output voltage does not exceed the specified foldback limit during start up. This helps to protect the power supply from overloading during start up.

Overall, the 76000696 is a highly versatile and cost effective DC/DC converter for low power applications with wide input voltage range. It provides an integrated, low power solution that is easy to use and can be used to power a variety of devices such as cell phones, industrial and medical systems, and other battery powered devices.

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