Maxim Integrated MAX17227A, MAX17291 and MAX38911 Essential Analog ICs

Designers can extend battery life and reduce solution size of consumer, industrial, healthcare and IoT systems with three essential analog ICs from Maxim Integrated Products. The MAX17227A 2 A nanoPower boost converter, MAX17291 high-voltage, 1 A boost converter and MAX38911 500 mA LDO are designed to provide low quiescent current to improve system efficiency and increase battery life.

Next-generation systems must provide higher currents from small batteries to support applications such as drug delivery, sensing, machine learning and artificial intelligence. Device limitations force developers into trade-offs that either constrain functionality, shorten battery life or increase solution size. The efficient power ICs from Maxim’s Essential Analog portfolio help ease these trade-offs with low quiescent current and small solution size.

For battery-operated consumer accessories, IoT and medical wearable systems that need to boost power, the MAX17227A delivers high output power and low quiescent current. It handles up to 2 A switch current — said to be twice that of the closest competitor — and consumes half the quiescent current, at just 350 nA. The nanoPower boost converter features short-circuit protection, true shutdown and an input voltage range from 400 mV to 5.5 V, and can extend battery system life up to 10%.

Delivering a high voltage boost up to 20 V, the MAX17291 offers a quiescent current that is said to be 80% lower and a solution size that is 60% smaller than the closest offerings. Delivering up to 10X voltage conversion, the boost converter fits battery-operated systems with high output voltage loads such as industrial energy hold-up, displays or sensors.

Up to 50% smaller than competitive solutions, the company claims, the MAX38911 500mA LDO for battery-operated IoT systems draws only 19 µA during idle mode to extend battery life up to 10%. It is said to have a power supply rejection ratio (PSRR) that is 16 dB better than the closest competitor, thus helping prevent noisy power supplies from interfering with critical functions such as precise measurements and communications.