New-Tech Europe | December 2016 | Didital Edition

new products

ISL9238A • Buck-boost NVDC charger for 1-, 2-, 3-, or 4-cell Li-ion batteries • Input voltage range of 3.2V to 23.4V (no dead-zone) • System output voltage of 2.4V to 18.304V • Up to 1MHz operation allows use of smaller, lower cost inductors and automatically reduces switching frequency with no audible acoustic noise when charger is in DCM mode • ASGATE FET control: actively controls inrush current to prevent FET damage • Low-power and high-power LDO outputs tie to VDD pin to provide bias power and MOSFET gate drive power • Compliant with Intel PROCHOT# and PSYS for protection against battery voltage drop, adapter over- current, battery over-current and overheat • Allows trickle charging of depleted battery • Autonomous charging option provides end of charge control using safety timer to stop battery charging • SMBus/I2C programmable limit settings with adapter current monitor (AMON) and battery discharging current monitor (BMON) • Battery learn mode calibrates the battery fuel gauge • ISL9238A includes a different SMBus address to support charging a second battery Pricing and Availability The ISL9238 and ISL9238A buck-boost battery chargers are available now and priced at $3.50 USD in 1k quantities. Both battery chargers are supplied in 4mm x 4mm, 32-lead TQFN packages. For more information, please visit www.intersil.com/products/isl9238.

is currently the smallest turnkey sensor board of its type, containing a MEMS accelerometer, gyroscope, magnetometer, pressure sensor, and a MEMS microphone. With the on-board low-power STM32L4 microcontroller, it can be used as a sensing and connectivity hub for developing products such as wearables, gaming accessories, and smart-home or Internet-of-Things (IoT) devices. SensorTile has a complete Bluetooth® Low-Energy transceiver including a miniature single-chip balun on- board, as well as a broad set of system interfaces that support use as a sensor-fusion hub or as a platform for firmware development. It can be simply plugged to a host board, and when powered it immediately starts streaming inertial, audio, and environmental data to ST’s BlueMS smartphone app that can be downloaded free of charge from popular app stores. Software development is fast and easy thanks to a vast ecosystem of Application Program Interface (API) based on the STM32Cube Hardware Abstraction Layer and middleware components, including the STM32 Open Development Environment. The system is fully compatible with the Open Software eXpansion Libraries (Open.MEMS, Open.RF, and Open.AUDIO), as well as many third-party embedded sensing and voice- processing projects. Many example programs available in source code offer a starting point for evaluation and customization, including software for position sensing, activity recognition, and low-power voice communication. The complete kit includes a cradle board, which carries the 13.5mm x 13.5mm SensorTile core system in standalone or hub mode and can be used as a reference design. This compact yet fully loaded board contains a humidity and temperature sensor, a micro-SD card socket, as well as a lithium-polymer battery (LiPo) charger. Its simple layout demonstrates how a complete wearable prototype customized with extra functionalities can be easily designed with the SensorTile core system. The pack also contains a LiPo rechargeable battery and a plastic case that provides a convenient housing for the cradle, SensorTile, and battery combination.

Miniature Multi-Sensor Module from STMicroelectronics Jumpstarts IoT and Wearable Designs STMicroelectronics’ 13.5mm x 13.5mm SensorTile

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