MAX5069CAUE

DC DC Switching Controllers

The MAX5069CAUE integrated DC-DC switching controller provides high performance for a range of applications. Its integrated voltage regulation loop, undervoltage lockout, load disconnect, and soft start were designed for efficient and reliable performance. Its integrated MOSFET drivers and low-side current sense amplifier make it well suited for many DC-DC converters requiring high efficiency and complete system flexibility. With its wide input voltage range, adjustable output voltage, and low quiescent current drain, it is perfectly suited for a variety of power applications.

Application Field

The MAX5069CAUE is designed for point-of-load (POL) or distributed-power applications in a variety of industries, including: industrial, communications, consumer electronics, white goods, automotive, and medical. It is designed to facilitate the development of synchronous step-down (buck) or step-up (boost) and/or flyback DC-DC converters with very low component count. The MAX5069CAUE can provide single-ended output currents up to 1.2A and accepts input voltages from 2.5V to 40V (50V maximum). For high-current applications, several converters can be synchronized to obtain higher output currents without the need for an external multiplier.

Working Principle

The MAX5069CAUE works as a current mode switching controller IC. It includes an integrated control loop, under-voltage lockout, load disconnect, and soft-start functions. It operates from an input voltage from 2.5V up to 40V while its output voltage can be adjusted with a trim potentiometer or through a voltage feedback signal. The MAX5069CAUE features an internal oscillator and can be synchronized with an external clock signal. Its internal current sense amplifier allows the use of an external resistor to indirectly measure the current flowing in the output. The soft-start keeps the inrush current below a certain limit when powering up the circuit. The MAX5069CAUE is also designed to have a low quiescent current drain.

Conclusion

The MAX5069CAUE offers designers a powerful and versatile DC-DC switching controller for a variety of applications. Its integrated voltage regulation loop and other features provide the performance and flexibility needed to efficiently and reliably power a range of circuits. Its wide input voltage range and adjustable output voltage make it an ideal solution for high-power distributed power applications.