MAX5005ACUB+T

PMIC - Voltage Regulators - Special Purpose

The MAX5005ACUB+T is a high-efficiency low noise step-down DC-DC converter with a wide 2.3V to 5.5V input voltage range. It provides ultralow output voltage noise of 0.1mVp-p and two independent outputs with current capacity up to 1.5A. The device integrates a MOSFET, a high-side current shunt circuit and an integrated loop compensation, allowing a 0.8V to 5.5V adjustable output voltage and fast transient response. The MAX5005ACUB+T eliminates up to twelve external components without degrading system performance.

Application Field and Working Principle

The MAX5005ACUB+T is designed for automotive applications, such as body sensors, antenna multipliers, cameras, and displays, where low noise and tight regulation are required. Additionally, because of the integrated MOSFET, it is suitable for a wide range of current and voltage loads. Moreover, the internal error amplifier achieves a stable output voltage independent from ESR and transient behavior, making it ideal for devices that have high tolerance to input and output voltage variations.

The MAX5005ACUB+T includes an integrated error amplifier, voltage reference, current limiting and thermal shutdown. The error amplifier compares the voltage on the feedback node with the output voltage and produces a signal that is then used to adjust the output of the main power stage. The voltage reference and current limiting features help to protect the system from overvoltage and overcurrent. The thermal shutdown feature helps to prevent the device from overheating.

The MAX5005ACUB+T also features Power Path functionality, which allows the device to be powered from a shared power source and provides additional protection from input voltage sags and surges. By integrating a high-side current shunt circuit and a nano-amp reference, the device is able to measure the output current with high accuracy and provide accurate current limit and short circuit protection.

The MAX5005ACUB+T features an advanced digital soft-start, which reduces inrush current and minimizes the resulting output voltage distortion. This allows the device to be used in systems with high capacitive loads without compromising performance. The device supports both continuous-conduction mode and discontinuous-conduction mode operation, giving designers the flexibility to optimize the system\'s efficiency and performance. Additionally, the MAX5005ACUB+T features configurable frequency synchronization and spread spectrum operation, giving designers the ability to reduce EMI and increase system reliability.

Overall, the MAX5005ACUB+T provides a robust solution for a variety of automotive applications, where low noise and tight regulation are key requirements. The powerful combination of features makes it suitable for many different applications, and the advanced protection and monitoring functions ensure reliable operation in all conditions.