Power buck regulator extends battery life for IoT devices

Analog Devices Inc. (ADI) has announced an ultralow power buck regulator that promises to boost battery life in portable devices by reaching the industry's highest ultra-light-load power conversion efficiency.

The ADP5301 buck regulator is designed to deliver maximum power for a longer period of time than previously achievable and is geared for Internet of Things (IoT) applications including wireless sensor networks and wearable devices such as fitness bands and smartwatches. The device is housed in a tiny 9-ball WLCSP package that measures less than 3.1mm², which makes it suitable for small form factors.

The ADP5301 features 90 per cent power conversion efficiency in ultralight load with 180nA quiescent current that claims to boost battery life. Its 6.5V to 2.05V input voltage range enables a range of battery sources or architectures. In addition, its selectable, low-noise forced PWM mode with low output voltage ripple powers noise-sensitive analogue load up to 500mA output current capability. The company also said the device's integrated voltage supervisory function increases overall system reliability.

The ADP5301 is in full production and can be had for $0.95 each per 1,000 pieces. The device comes in 9-ball WLCSP packaging.