Buck-boost DC-DC converter with ultra-low quiescent current

Renesas Electronics Corporation has released the ISL9122A, a flexible buck-boost switching regulator with bypass mode that delivers ultra-low IQ for powering sensors, MCUs, wireless devices, and other system components. Functioning with battery output from 1.8V to 5.5V, the device expands the battery life of smart IoT devices powered by coin-cell, lithium and multiple series alkaline batteries.

“With the explosive growth of IoT wireless connectivity applications, the ISL9122A buck-boost regulator’s fast transitions from no load to full load is ideal for powering the newest generation of devices,” said Andrew Cowell, vice president, Mobility, Infrastructure and IoT Power Business Division at Renesas. “Our customers praise the ISL9122A’s flexibility, dynamic voltage scaling and lowest regulated standby power consumption.”

Applications include wireless earbuds, smart watches, fitness bands, water and gas meters, portable medical devices, and a broad range of battery-operated smart IoT devices.