MAX20355EWO+

MAX20355EWO+ is a MAX20355 series power line communication (PLC) with ModelGauge™ m5 EZ fuel gauge and buck boost converter. This provides a complete system solution for charging and data transfer between a charging case and a battery powered device over a single contact. The PLC interface is capable of 100kpbs throughput while simultaneously providing 400mA of total charging/system current. A 4Mbaud half-duplex data only UART mode provides an easy and fast method for firmware updates, debugging interface, and factory modes. It utilizes a 3.3W buck-boost converter with dynamic voltage scaling (DVS) to automatically manage the charging voltage. Additional features include moisture detection, overcurrent protection, and 8kV contact rated ESD protection on the PLC outputs. Applications include TWS headphones, augmented reality glasses, wearable devices.

• 42-WLP pin package
• 100Kpbs system throughput, 166.7kbps bit rate, 200mA per output charging current
• Automatic earbud insertion/removal detection, 4Mbaud, half-duplex, data-only UART mode
• PLC controllable GPIOs, reset and shipping mode, high-efficiency autonomous charging system
• Integrated 3.3W buck-boost, automatic DVS for each earbud to optimize charging efficiency
• Robust PLC output protection features, highly flexible moisture detection block
• Programmable overcurrent protection, 8kV contact ESD protection
• Small solution size, small single 1608 inductor, 200mA per output charging/system current
• Operating temperature range from -40 to +85°C

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