Wednesday, September 28, 2022

Highly Integrated Li-Ion Charge Management IC

By Sharad Bhowmick

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Halo Microelectronics has released HL7090, a highly integrated 900mA Li-Ion battery charging management IC. The battery charging management IC contains one switching charger, two linear chargers, and full-range programmable charge parameters through an I2C compatible interface. The charge management IC features trickle charge, constant-current charge (CC), and constant voltage charge (CV) for safely charging the battery. The compact charge comes in a small package measuring just 3mm x 3mm. The charge management IC is suitable for use in various IoT applications, and its small footprint makes it suitable for use in wearable and hearables including wireless earbuds.

The highly integrated HL7090 is a flexible, and high-efficiency switching-mode charge management IC, the charging IC is suitable for single-cell Li-ion and single cell Li-polymer batteries used in various IoT and wearable applications. The IC incorporates a power MOSFET, synchronous PWM controller, input current sensing, high-accuracy current, voltage regulation, and charge termination function into a tiny 3mm x 3mm QFN package

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According to the company, the HL7090 integrates load switches to accommodate USB and wireless charging sources. The HL7090 also features a boost mode which allows it to charge two two accessories simultaneously, ideal for earbud applications. The charge parameters can be programmed through the I2C interface (HL7090FN03 version). The IC features an automatic three-phase battery charging. The input current is automatically limited to the value set by the host, and the charging is terminated based on the battery voltage and a user-selectable minimum current level. A safety timer with reset control provides a safety backup for the I2C interface. The charge status can be reported to the host through the I2C interface.

“Our new Li-ion battery switching charger IC with its fully automatic charge management takes all the worries out of charging IoT applications, providing convenience, no hassle, and peace of mind,” said David Nam, CEO of Halo Microelectronics.”


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