MAX773ESD+

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MAX773ESD+ Application Field and Working Principle

The MAX773ESD+ from Maxim Integrated is a small and low cost step-up DC-DC converter on chip, with very low standby current consumption that makes it well-suited for a wide range of handheld and portable applications. It offers a wide input voltage range of 2.7V to 5.5V, allowing it to be used in battery powered and other low voltage systems. The device also features a wide range of output voltages and is capable of providing a level of performance not typically seen in devices of this size. In addition, the device offers a low-noise direct voltage feedback loop that makes it ideal for powering sensitive circuitry.

Features

• Integrated high-efficiency, low-noise step-up DC-DC converter
• Input voltage range: 2.7V to 5.5V
• Output voltage range: 2.6V to 13V
• Operating frequency up to 750kHz
• Integrated LC output filter components
• High efficiency: 80%
• 0.25 µA typical supply current
• 1.3 µA typical shutdown current
• Space-saving 4-mm x 4-mm DFN package

Working Principle

The MAX773ESD+ is a small, low-cost step-up DC-DC converter on chip. It offers an integrated wide input voltage range of 2.7V to 5.5V, allowing it to be used in battery-powered and other low voltage systems. The chip features a wide range of output voltages and is capable of providing a level of performance not typically seen in devices of this size. The device also features a low-noise direct voltage feedback loop that helps to maintain a high level of accuracy in the output voltage.

The MAX773ESD+ uses an integrated flyback PWM regulator to generate a high-frequency switching current. This switching current is rectified and filtered to generate a steady output. The output is regulated using a pulse-width modulated (PWM) control loop, this is known as a voltage-mode control system. The chip also features integrated overload, over-current and over-temperature protection.

The MAX773ESD+ is an ideal choice for applications such as regulators and power boosters where a small form factor and low cost are essential. It is also a great choice for powering sensitive analog circuit, such as pre-amps and other audio applications. With its integrated LC output filter components, the device is able to provide a very high level of performance as well as long battery life.

Conclusion

The MAX773ESD+ is an integrated step-up DC-DC converter that offers an excellent cost-performance solution for a wide range of handheld and portable applications. It is capable of providing a wide range of output voltages while maintaining a low standby current that enables long battery life. The integrated PWM control loop and LC output filter components provide a high level of performance, allowing it to be used in a variety of sensitive analog circuitry. By combining all of these features, the MAX773ESD+ provides an easy to use, high performance, low cost solution for all types of battery-powered portable applications.

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