Crowd Supply has added an Arm Cortex M0+ to the classic Casio wristwatch to produce the Sensor Watch. According to Crowd Supply, it forsakes power-hungry features like Wi-Fi connectivity, Bluetooth support and a huge screen, focusing instead on 1990s nostalgia-styling, practical applications and battery life.
Wearable
Step-down buck converter is for multi-cell batteries
Single stage power conversion in multi-cell battery applications is provided with the MAX77540 step-down buck converter. Examples of use are AR / VR headsets, land mobile radios and digital single-lens reflex (DSLR) cameras. The power-dense MAX77540 buck converter features 94 per cent peak efficiency and wafer level packaging that measures 61 per cent smaller than traditional quad flat no-lead (QFN) packages.
Load switches’ low IQ extend battery device lifetimes
Three load switches released by Toshiba Electronics Europe, deliver a decrease in quiescent current (IQ) which extends the operating life of wearables and IoT devices that are powered by small batteries.
Würth Elektronik adds NFC option to wireless power coil portfolio
Coils for wireless power transmission offered by Würth Elektronik include five models with an integrated near field communications (NFC) antenna. The five models have receiver coils for transmission powers of up to 30, 40 and 50W and transmitters for 100 and 120W. The transmitters can be used according to the Qi (5.0W and 15W) and Air Fuel Alliance standards for charging consumer electronics such as smartphones, smartwatches, wearables, digital cameras or tablets, while also transmitting data for identification or payment applications. They can also be used in proprietary industrial designs.
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