Switch-mode buck charger for portable equipment and mobile devices
Published: 13 May 2019 - Rachael Morling
Mouser Electronics is now stocking the MAX77860 switch-mode buck charger from Maxim Integrated. Combining high performance, wide input voltage, and USB Type-C CC detection, the MAX77860 is ideal for USB Type-C charging for single-cell (1S) lithium-ion or lithium-polymer applications, portable medical equipment, portable industrial equipment, and mobile point-of-sale devices, as well as smartphones and Internet of Things (IoT) applications.
The Maxim MAX77860 step-down charger features an input operating range of 4.0 V to 13.5 V and support for USB Type-C CC detection with reverse boost capability to power USB On-The-Go accessories. The charger includes two integrated switches and a single input for both USB and high-voltage adapters. The device’s I²C programmable settings allow it to accommodate a broad range of system loads and battery sizes. The charger is protected from input overvoltage events of up to 14 V, and features an input current limit of 4.0 A and a battery charging current limit of 3.15 A.
It also offers a specially designed CC, CV and die temperature regulation algorithm, while the on-chip analog-to-digital converter (ADC) monitors battery voltage, charging input voltage and current, battery temperature, and charging and discharging current.
The device is supported by the MAX77860 evaluation kit, which includes an evaluation board (with onboard MAX77860 charger and an integrated I²C interface) and a MINIQUSB communication device.