MAX5070BAUA+

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The MAX5070BAUA+ is a low-noise dc-to-dc switching controller designed for use in industrial, consumer, and automotive applications. The robust switching controller offers excellent noise performance and features a wide 1.1- to 5.5-V operating range, low power loss, and an adjustable 1.2-A switch current limit. It operates in buck, boost, flyback, and inverting configurations.

In a buck configuration, the MAX5070BAUA+ reduces an input voltage to the desired output voltage. To handle input voltages with lower-than-expected output, a boost configuration is recommended. In boost configurations, the device steps up input voltages, allowing designers to achieve higher output voltage levels. In flyback configurations, the device stores energy in an inductor, and then releases it as a higher output voltage.

The MAX5070BAUA+ includes a selectable minimum duty cycle option, which helps to reduce the input ripple current and soft-start the power supply while improving power efficiency and transient response. It also features a fast-acting auto-skip mode and tracking mode that enables current and voltage tracking in applications such as notebooks and portable computing. In addition, the controller automatically monitors the switching current and shuts off the switch if the current exceeds the user-defined limit.

The MAX5070BAUA+ comes with an integrated voltage-mode control loop that offers a high-precision reference voltage and other parameters such as slew rates and dead-time control. The voltage mode architecture is ideal for applications where large load transients are expected. It also helps to ensure excellent ripple voltage attenuation and loop bandwidth for controlling a wide range of output voltages.

The MAX5070BAUA+ is an ideal solution for power applications such as automotive adaption, LED backlighting, point-of-load regulation, and switched mode power supply. It offers a cost effective, low noise solution that is suitable for applications including LED lighting, mobile handsets, and industrial applications.

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