ADP1714AUJZ-0.85R7

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The ADP1714AUJZ-0.85R7 is a highly-efficient lithium-ion cell charge and system power management integrated circuit (PMIC) belonging to the family of voltage regulators. It is designed for a wide range of applications and is part of the linear voltage regulator series offered by Analog Devices.

The device enables handset designers to take advantage of the latest energy-efficient advancements in lithium-ion cell technology. It features a programmable charge voltage and current featureset, supporting up to 90W fast-charge requirements via the USB Power Delivery 3.0 protocol. Additionally, it delivers system power management functionality for main, sub, and multiple DC-DC converters, making it an ideal single-chip solution for lithium-ion powered devices.

The ADP1714AUJZ-0.85R7 utilizes an advanced current-based charge algorithm, that accurately accounts for voltage shifts due to load conditions, ensuring finer granularity of power supply to the battery. It is highly adjustable, with the ability to support a wide range of battery sizes, battery chemistry, and voltage settings. The device offers drop-in compatibility with other battery management circuit designs, allowing for quick integration and implementation in a variety of applications.

The ADP1714AUJZ-0.85R7 operates using three sensing loops and an on-chip temperature measurement circuit to accurately measure the battery parameters and provide system power management functions. The loop-based charge algorithm works by measuring the differential voltage across the sense resistor and calculating the current. The current is then compared to the programmed charge current, and the duty cycle of the PWM channel is adjusted accordingly, helping to maintain a constant peak current. By continuously adjusting the duty cycle, it is able to efficiently manage the charge of the battery.

The IC features a low noise, low dropout, high-efficiency regulator and a complete system power management feature set, providing multiple, dynamically-scalable voltage rails and multiple power domains. It also incorporates a wide array of safety and monitoring features, including cell voltage and temperature monitoring, over-current protection, and over-voltage protection, as well as a feature that limits the battery charging current if the temperature is too high. This helps to safeguard and protect the device.

The ADP1714AUJZ-0.85R7 is an ideal solution for battery-powered applications, offering power management and Li-ion cell charging in a single-chip solution. From consumer electronics to general-purpose applications, the ADP1714AUJZ-0.85R7 can provide a complete power management solution, combining low noise, high-efficiency regulator, complete system power management, and battery charging support.

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