MAX5035BASA+T

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MAX5035BASA+T is a power management integrated circuit (PMIC), more specifically a DC–DC switching regulator. It is manufactured by Maxim Integrated Products and can be used for a wide range of applications that require a regulated power supply for the proper operation of a system. In this article, we take a look at the different application fields and the working principle of the MAX5035BASA+T.

Application Fields

The MAX5035BASA+T has a wide range of applications, including:

• Post regulators for chargers and power supplies
• DC–DC buck converters
• Power supplies for battery-powered equipment
• Adaptive voltage scaling powers supplies
• Lighting products
• Smartphones, tablets and other portable electronics
• Automotive electronics

The MAX5035BASA+T is designed to accept input voltages ranging from 8V to 28V and can provide output voltages ranging from 0.8V to 28V, thus making it an ideal candidate for many different applications. It also has a wide temperature range of -40°C to 125°C, making it suitable for industrial and automotive applications.

Features

The MAX5035BASA+T has several features that make it an attractive solution for many applications. These features include:

• High switching frequency (up to 750 kHz)
• Current-mode control for fast loop response and excellent transient response
• Integrated high-side MOSFET
• High-efficiency, up to 97%
• Programmable soft-start
• Programmable input under-voltage lockout (UVLO) and output over-voltage protection (OVP)
• Programmable over-current protection (OCP)
• Internal compensation for faster loop response and better noise immunity

Working Principle

The basic working principle of the MAX5035BASA+T can be understood by considering the following block diagram:

The basic components of the MAX5035BASA+T are an input capacitor, an inductor, an output capacitor, a high-side MOSFET, and a sense resistor. The input voltage is applied to the input capacitor and is then used to power the integrated circuit. The DC–DC buck converter operates by using the inductor to store the energy from the input voltage and then releasing it to the output through the high-side MOSFET, in response to a control signal from the integrated circuit. The sense resistor is used to monitor the current flowing through the output, and the output voltage is monitored by the integrated circuit. This information is used to control the operation of the high-side MOSFET and adjust the output voltage to the desired level.

The MAX5035BASA+T supports voltage-mode control, current-mode control, and user-adjustable soft-start for a wide range of applications. In voltage-mode control, the output voltage is monitored and used to drive the high-side MOSFET in order to adjust the output voltage. In current-mode control, the sensed current is used instead of the output voltage, and this allows for faster transient response and better noise immunity. The user-adjustable soft-start is used to limit the inrush current when the converter is powered up.

Conclusion

The MAX5035BASA+T is a highly versatile DC–DC switching regulator that can be used for a variety of applications ranging from post regulators for chargers to adaptive voltage scaling power supplies. It has a wide input voltage range and can support output voltages ranging from 0.8V to 28V. It also has excellent performance characteristics including high-efficiency, fast loop response, and excellent noise immunity. The user-adjustable soft-start function also makes it an attractive solution for many applications.

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