Maxim Announces Industry's First Efficient, Highly Integrated 15W MAX14748 USB Type-C Charging and Charger Detection Solution Helps Designers Use a Simpler, More Efficient Approach to USB Type-C with Two Series Li-Ion Battery Packs TM portable devices charge quickly and safely. Current solutions on the market need to piece together different ICs. The charger's interview solves these cumbersome problems, and designers only need to pay attention to how to make full use of the USB Type-C's functional advantages in their design.
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From wireless microphones to high-end cameras, VR headsets and even mobile medical devices, the USB Type-C connector provides an easy solution for charging and transmitting multimedia data streams in a variety of applications. These applications are typically powered by two series-connected batteries and also require recharging to provide sufficient power. To date, the development of USB Type-C products powered by two series-connected battery packs requires multiple external discrete components, which not only increases bill of materials (BOM) costs, but also introduces additional points of failure in the circuit.
The MAX14748 integrates a charger, USB Type-C charger detection, 28V overvoltage protection, and power-supply circuitry on a single chip, dramatically simplifying design. The highly integrated solution is compatible with traditional USB BC1.2 charging and other non-standard charging requirements, making the USB Type-C charging power twice that of the Micro USB solution. The programmable automatic input current limit (AICL) function protects valuable terminal equipment by taking full advantage of the maximum current of the charging adapter while ensuring safety. With the MAX14748, Maxim will continue to expand its power-related portfolio to meet the unique USB Type-C application needs. Existing products include the MAX77756 24V input, 500mA buck regulator, the MAX17205 stand-alone ModelGaugeTM m5 fuel gauge with SHA-256 safety certification, and the MAX20323 CC pin overvoltage protector.
Main advantage
· Reduced power management scheme size: Unlike traditional charging solutions, the MAX14748 integrates a charger detector, a step-up/step-down converter, and a Li-Ion battery charger with a smart power selector in a single chip to minimize discrete components. .
Fast, safe charging: The MAX14748 uses a traditional 5V USB adapter to charge two series Li-Ion batteries with AICL features to prevent overshoot.
· Additional protection features: The MAX14748 provides 28V integrated overvoltage protection, JEITA charge protection and ±15kV ESD protection on the USB adapter pins.
Evaluation
· "The MAX14748 is the first solution on the market to support designers taking advantage of USB Type-C connectors and 2S battery packs." Sui Shieh, vice president of industrial and healthcare at Maxim Integrated, said: "Designers can now take advantage of simplicity. High-efficiency solutions extend the fast and safe charging of lithium-ion batteries to a wider range of battery-powered products."
Supply and price
· The MAX14748 features 54-bump, 0.4mm ball pitch, 3.97mm x 2.77mm x 0.64mm wafer level package (WLP) for $3.40 (1000 sheets, FOB USA), available through Maxim's website and licensed dealers buy
· Provide evaluation board MAX14748EVKIT# for $77
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