MAX6428EIUR+T

Introduction

The MAX6428EIUR+T is an ultra-low-voltage, low-power, and high-efficiency battery charger and system power management integrated circuit (PMIC) from Maxim Integrated. It is designed for applications such as mobile devices and other portable embedded systems. The MAX6428EIUR+T application field and working principle describes how the device works and the standard operations it is intended to perform.

Application Field

The MAX6428EIUR+T is a single-chip, system-level power management integrated circuit (PMIC) used to provide total system power management, including battery charging, system power control, and system monitoring. The device is an ideal power solution for low-power, embedded applications such as wearables, handhelds, and other portable electronic devices that require a low profile and small form factor. This PMIC provides a single-chip solution for charging Li-ion and Li-polymer batteries, protecting against overload, and controlling system power supply.

With its wide input voltage range from 0.2V to 6.5V, the MAX6428EIUR+T is suitable for energy harvesting systems. It also features boosted voltage output from 0.3V to 6V, ideal for battery charging and voltage regulation of low power systems. The integrated PowerFET amplifier produces a maximum output current of 500mA, with an efficient power conversion rate of up to 92%. Additionally, the device includes a proper overvoltage protection (OVP) and overcurrent protection (OCP) circuitry.

The MAX6428EIUR+T is an ideal power solution for many embedded applications. It is small, light-weight, low-power, and offers multiple features combined in a single package. The wide range of features and current ratings makes it suitable for a wide range of applications.

Working Principle

The MAX6428EIUR+T controls and powers a wide range of system settings, including charging, power control, and monitoring. The device is a boost voltage regulator with an integrated PowerFET amplifier. It has a wide input range from 0.2V to 6.5V, making it suitable for energy harvesting systems. It also has a wide output range of 0.3V to 6V, ideal for charging and power supply management of low power systems.

In a battery charging application, the device manages the charging of a Li-ion or Li-polymer battery. It starts charging at a maximum current of 500mA and passes through many phases, depending on the battery\'s condition. The MAX6428EIUR+T includes an overvoltage protection (OVP) and overcurrent protection (OCP) circuitry, which prevents system overload. In addition, the device is also equipped with a high-efficiency power conversion system to reduce power consumption and maintain a high efficiency rate.

The MAX6428EIUR+T also monitors the system voltage and current. It uses its built in sensing and programming features to detect system status and invoke a wide range of activities. It can be programmed to alert users or perform actions, depending on the system status.

The MAX6428EIUR+T is also equipped with an integrated PowerFET amplifier to provide constant output current, even if the input voltage or load fluctuates. This allows for efficient power conversion and reduces power consumption.

Conclusion

The MAX6428EIUR+T is an ultra-low-voltage, low-power, and high-efficiency battery charger and power management integrated circuit (PMIC). It is an ideal power solution for many embedded applications due to its small size and low power consumption. The device features wide input and output voltage ranges, as well as and integrated PowerFET amplifier for efficient power conversion. It also includes proper overvoltage protection (OVP) and overcurrent protection (OCP) circuitry to prevent system overload. The MAX6428EIUR+T is an ideal choice for powering and managing embedded systems for many applications, such as mobile devices and wearables.