MAX5055BASA+T

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A PMIC (Power Management Integrated Circuit) Gate Driver is an IC with several components and functions that serve to manage and optimize power for an application. The MAX5055BASA+T is one such example. It is both an integrated power and gate driver device that provides an efficient solution for high current, low voltage battery supplies. It integrates a high-performance low-dropout linear regulator, low on-resistance high-side and low-side MOSFETs, and a slew-rate limited driver to drive the MOSFETs with enhanced performance.

Features of the MAX5055BASA+T

The MAX5055BASA+T features a small, integrated solution that provides up to 4A of continuous output current, includes a high-performance linear regulator, MOSFETs, and Gate drive. It also features low 1.0V dropout, a ±3A drive, 1% output accuracy, output short-circuit protection, and an adjustable soft-start to limit inrush current.

The device includes protection mechanisms against over-voltage, under-voltage, over-temperature and over-current. It provides up to 400mA of load current in the shutdown mode and, in addition, the thermal shutdown turns off the device when the die temperature exceeds the programmed threshold.

Application Fields

The MAX5055BASA+T is designed to be used in a variety of applications and solutions, such as portable/handset/consumer electronics, and DC/DC switching battery supplies. It can also be used in automotive applications, and for portable device battery discharge monitoring.

The MAX5055BASA+T is particularly beneficial in applications where high current, low voltage battery supplies are required. For example, it can be used in Lithium-ion battery supplies, USB-C applications, and fast charging USB powered applications.

Working Principle

The MAX5055BASA+T works by integrating various components and functions which serve to manage and optimize current and power supply. The integrated linear regulator is used to reduce the impact of the charging voltage ripple on the supply voltage, while the low on-resistance MOSFETs serve to reduce the power losses and improve the efficiency of the power supply. The gate driver is designed to drive the MOSFETs with enhanced performance and the slew-rate limited driver prevents excessive current draw from the gate.

In addition to this, the MAX5055BASA+T also enables the user to set a load current limit to limit over-current protection and also to set a soft-start to limit the inrush current. Finally, the device has a built-in thermal protection that triggers when the die temperature exceeds the programmed threshold.

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