<div id="readability-page-1"><div> , /PRNewswire/ -- ROHM Co., Ltd. has developed a wireless power supply IC chipset consisting of the receiver (ML7670) and transmitter (ML7671) compatible with Near Field Communication (NFC) technology for compact wearables such as smart rings and smart bands. ML767x chip set: https://www.rohm.com/products/power-management/wireless-power?page=1&amp;SearchWord=ml767#parametricSearch Figures: Product features https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/_prw_PI1fl_5G9aZOC5.jpg The smart ring market has seen rapid growth in recent years. However, for extremely small ring-shaped devices worn on the finger, wired charging is impractical, while the conventional Qi wireless charging standard is difficult to implement due to constraints such as coil size.In response, NFC-based charging, which operates at the high-frequency 13.56MHz band that enables antenna miniaturization, is attracting increased attention, with adoption accelerating in next-generation wearables.This new chipset builds on the proven receiver (ML7660) and transmitter (ML7661). The maximum power transfer is specified at 250mW, while peripheral components such as the switching MOSFETs required to supply power to the charging IC are built in. The result is a solution optimized for both mounting area and power transfer efficiency in the power class demanded by compact wearable devices.Figures: Comparison of power receiver IC features and application examples https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/_prw_PI2fl_t3V77HE4.jpg The ML7670 power receiver IC achieves a maximum power transfer efficiency of 45% in the 250mW low output range -- all in an industry-leading form factor of just 2.28 x 2.56 x 0.48mm. What's more, all firmware required for wireless power delivery is embedded directly within the IC, eliminating the need for a host MCU.Compliance with NFC Forum (WLC 2.0) enables power transfer while maintaining compatibility with existing devices, positioning the chipset as a core element in the expanding NFC wireless power ecosystem.Figures: Lineup table https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/_prw_PI3fl_3aWk93R6.jpg The new chipset is already in mass production. Furthermore, it has been adopted in SOXAI RING 2, the latest model launched on December 10, 2025, by SOXAI Inc., the Japanese developer and distributor of the original sleep-monitoring ring SOXAI RING.*The name &#34;SOXAI&#34; is pronounced &#34;SOK-sai.&#34;SOXAI RING 2 Adoption Example: https://www.rohm.com/collaboration/soxai_ring-2 Application Examples - Smart rings - Smart bands - Smart pens - Wireless earphones - Other compact devices (i.e., wearables)News release: https://www.rohm.com/news-detail?news-title=2026-04-28_news_wireless-charge&amp;defaultGroupId=false About ROHM: https://kyodonewsprwire.jp/attach/202604217802-O1-7Qv27crN.pdf Logo: https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/_prw_PI4fl_2aE455Sk.jpg Official website: https://www.rohm.com/ <img width="12" height="12" src="https://imageproxy.pbkrs.com/https://edge.prnewswire.com/c/img/favicon.png/query-c2Q9MjAyNi0wNC0yOCZzbj1ISzQ1MDYx?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" original-src="https://imageproxy.pbkrs.com/https://edge.prnewswire.com/c/img/favicon.png/query-c2Q9MjAyNi0wNC0yOCZzbj1ISzQ1MDYx"/> View original content:https://www.prnewswire.com/news-releases/rohm-launches-ultra-compact-wireless-power-chipset-for-wearables-302754997.htmlSOURCE ROHM Co., Ltd.</div></div>

6963

ROHM 株式会社推出了一款新的超小型无线电源 IC 芯片组 ML7670 和 ML7671，专为智能戒指和手环等可穿戴设备设计。该芯片组采用 NFC 技术，能够在 2.28 x 2.56 x 0.48mm 的小型外形中实现高效的电力传输。它在 250mW 时实现了最高 45% 的电力传输效率，目前已进入大规模生产，应用于 SOXAI RING 2 等设备。该芯片组符合 NFC 论坛标准，增强了其在无线电源生态系统中的兼容性

ROHM 推出用于可穿戴设备的超小型无线电源芯片组