**ADP5061ACBZ-2-R7: A 200 mA Linear Battery Charger with Integrated Load Switch and I²C Interface for Portable Applications**
The proliferation of portable electronic devices continues to drive the demand for highly integrated, compact, and intelligent power management solutions. The **ADP5061ACBZ-2-R7** from Analog Devices stands out as a sophisticated single-chip answer to this challenge, combining a **200 mA linear battery charger**, an integrated **load switch**, and a flexible **I²C interface** into one ultra-compact package.
At its core, the ADP5061ACBZ-2-R7 is designed to efficiently and safely charge single-cell lithium-ion/polymer batteries. Its linear topology is optimized for space-constrained applications where switching noise is a critical concern, such as in wearable devices, hearables, and other compact portable electronics. The charger supports a wide input voltage range from 3.8 V to 5.5 V, making it compatible with standard USB power sources. It features a complete **end-of-charge cycle** with precise voltage regulation, temperature monitoring, and automatic termination, ensuring both battery safety and longevity.
A key differentiator of this IC is its **integrated load switch**. This feature allows the system to be powered directly from the input source when present, reducing the discharge cycles on the battery and improving its overall lifespan. When the input source is removed, the load switch seamlessly transitions the system to run from the battery. This integrated approach eliminates the need for an external MOSFET and its associated driver circuitry, saving valuable board space and simplifying the overall design.
The programmability of the ADP5061ACBZ-2-R7 is unlocked through its **I²C interface**. This digital communication bus provides designers with unparalleled control over the charging parameters. Key settings such as input current limit, fast charge current, battery regulation voltage, and charge termination current can be dynamically adjusted on the fly. This enables the creation of sophisticated, adaptive power management schemes that can respond to different USB sources (standard, charging port, or proprietary adapter) and optimize the charging profile based on temperature or user preferences.
Housed in a tiny 0.4 mm pitch **1.72 mm x 2.02 mm WLCSP package**, the device is a testament to high functional integration for the most space-sensitive designs. Its comprehensive suite of protection features, including thermal shutdown, input under-voltage lockout (UVLO), and a built-in battery temperature monitor, ensures robust and reliable operation under various conditions.
**ICGOOODFIND:** The ADP5061ACBZ-2-R7 is an exceptionally integrated power management IC that masterfully combines a linear charger, load switch, and I²C control. It is an ideal solution for designers of next-generation portable and wearable devices who prioritize miniaturization, intelligence, and power efficiency without compromising on safety or feature set.
**Keywords:** Linear Battery Charger, Integrated Load Switch, I²C Interface, Portable Applications, Power Management IC
