Proving the Business Case for the Internet of Things

Maxim power device extends battery life for health monitors

Steve Rogerson
March 28, 2017

Designers of wearable, health-monitoring, IoT, mobile, and other connected devices have been given help in their struggle to extend battery life with a boost regulator from California-based Maxim Integrated.
Announced at this month’s Embedded World in Nuremberg, the MAX17222 NanoPower boost regulator is aimed at next-generation products, particularly those with increasing functionality and performance in smaller form factors. Power products servicing this market require mastery of low quiescent current design techniques and high integration.
With the claimed industry’s highest efficiency and lowest quiescent current of 300nA, the device can extend battery life in small form factor for wearable and consumer IoT designs.
“Low quiescent current, combined with true shutdown and high efficiency helps our customers deliver smart, connected products while meeting demands for high uptime per charge,” said Meng He, executive business manager at Maxim Integrated.
The 0.4 to 5.5V input, 1.8 to 5V output boost regulator with 500mA input current limit reduces size by up to a half compared with similar products and offers 95 per cent peak efficiency to reduce heat dissipation. These benefits are suitable for wearable devices, which IDC forecasts will experience a compound annual growth rate of 18.4% by 2020.
In true shutdown mode, the current draw of 0.5nA virtually stops battery drain to extend battery life and eliminate the need for external disconnect switches. The device is internally compensated and requires only a single configuration resistor and small output filter for a full power system.
It comes in 0.88 by 1.4mm six-bump WLP and 2 by 2mm six-pin standard µDFN packages. It operates over the -40 to +85ËšC temperature range.
Maxim is also announcing immediate availability of a full suite of NanoPower devices, including comparators, op amps and supervisors targeted for low power applications.