PMIC Squeezes Smart Patient Monitoring Wearables By 50%

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As an important stride forward in the advancement of personal and remote patient monitoring solutions, Maxim has launched a new ultra-low quiescent current PMIC (power management integrated circuit) measuring only 1.63mm x 1.63mm. The chip is said to extend battery life and significantly reduce solution size for primary cell wearable medical and fitness devices by 50%.

MAX20310 is ideal for applications such as non-rechargeable medical patches, environmental and equipment monitoring, and discrete sensors for industrial internet of things (IIoT).

The PMIC supports a low input voltage of just 0.7V for new high-energy density battery architectures such as Zinc Air and Silver Oxide, as well as the more common Alkaline battery architecture.

As per a report by Allied Market Research projects, the global remote patient monitoring market is expected to grow at a compound annual growth rate (CAGR) of 17% to reach $2.13 billion by 2022.1

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In the announcement, Maxim states the challenges which the designers of wearable medical and fitness applications face. Important ones are achieving ultra-small form factor and longer battery life. However, in present solutions, designers typically use discrete components which can take up precious board space, consume high quiescent current, and consume battery when the device is in sleep mode.

Apart from these, in clinical environments, there are additional challenges since rechargeable solutions involve contacts, clips, and charging ports where germs may linger.

The new chip, in contrast, is said to use a novel single-inductor multiple-output (SIMO) architecture, leveraging which the chip drives four power outputs from a single inductor.

This is said to consume over 40% less quiescent current and improves battery life as a result. It also reduces solution size by half over comparable discrete solutions, says the firm.

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Also, in clinical environments, primary cell architectures can create hermetically sealed units to safely disinfect between use or even dispose of completely to inhibit patient-to-patient infection.

Therefore, the MAX20310 is ideal for applications such as non-rechargeable medical patches, environmental and equipment monitoring, and discrete sensors for industrial internet of things (IIoT).

“This ultra-small wearable PMIC allows for patient comfort, particularly when it comes to devices which must be worn 24 hours a day, 7 days a week,” said Frank Dowling, Director for Industrial & Healthcare at Maxim Integrated. “It also improves active runtime for longer battery life, another essential component for wearable applications.”

“Maxim’s new PMIC is a way to improve patient outcomes through continuous monitoring, a trend which is rapidly growing,” said Susie Inouye, Research Director and Founder at Databeans.

The chip operates over the -40 deg C to +85 deg C temperature range, and is available in a small, 1.63mm x 1.63mm wafer-level package (WLP).

Pricing is available upon request. An evaluation kit, the MAX20310EVK, is available.

For further details, click here.

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