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Power Consumption Solutions for Battery Operated Medical Devices

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Power Consumption Solutions for Battery Operated Medical Devices

Application Notes

Battery Life is Key

Characterizing battery life is critical for developers of portable battery-powered medical devices. Advances in semiconductor technology have enabled most components in a medical device to be integrated onto a single chip, or a system-on-a-chip (SoC). Further reductions in size are constrained by powering technologies like energy storage and harvesting elements. Long periods of sleep/idle, wakeup/active, and short RF bursts create a challenging demand on the battery.

The typical peak current for wireless technologies is shown below:

Wireless technology

Bluetooth®
NFC
ZigBee

Peak current

< 15 mA (read and transmit)
< 15 mA (read)
~ 5.9 to 34 mA