MAX20357A
RECOMMENDED FOR NEW DESIGNSPower Line Communication with ModelGauge Fuel Gauge and Charger
- Part Models
- 1
- 1ku List Price
- Starting From $3.85
Overview
- Power Line Communication (PLC) Interface
- 100kpbs System Throughput
- 167.7kpbs Bit Rate
- 200mA Dual-Slave and 400mA Mono-Slave 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
- 90% End-to-End Charging Efficiency from Master to Slave Battery
- 400mA Integrated Linear Charger
- Optimized Charging Efficiency by Automatic DVS Negotiation between Master and Slave
- Robust PLC Output Protection Features
- Highly Flexible Moisture Detection Block
- Input Current Limiting
- 8kV Contact ESD Protection
- Small Solution Size
- Low External Component Count
- 2.69mm x 2.69mm, 36-Bump, 0.4mm Pitch Wafer-Level Package (WLP)
The MAX20357A is a power line communication (PLC) slave with ModelGauge™ m5 EZ fuel gauge and charger. With the MAX20355A, the MAX20357A 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 200mA of charging/system current per channel. A 4Mbaud half-duplex data-only UART mode provides an easy and fast method for firmware updates, debugging interface, and factory modes.
The charger on slave device MAX20357A controls the output of the 3.3W buck-boost converter in the MAX20355A with dynamic voltage scaling (DVS).
The MAX20357A integrates an ultra-low power fuel gauge which implements the ModelGauge m5 algorithm. The IC monitors a single-cell battery pack and supports internal current sensing.
Additional features include comprehensive master device insertion and removal notifications, moisture detection, overcurrent protection, and 8kV contact-rated ESD protection on the PLC output.
APPLICATIONS
- True Wireless Stereo Headphones
- Augmented Reality Glasses
- Wearable Devices
Documentation
Data Sheet 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX20357AEWX+T | WLCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 21, 2025 - 2452N ASSEMBLY |
||
| MAX20357AEWX+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Evaluates MAX20355A, MAX20357A: Power Line Communication with ModelGauge Fuel Gauge and Charger
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