Renesas’ ISL9122 series flexible buck-boost switching regulators with bypass mode provide ultra-low quiescent current (IQ) for powering sensors, MCUs, and wireless devices. The ISL9122A operates with a battery output from 1.8 V to 5.5 V and can extend the battery life of smart Internet of Things (IoT) devices powered by coin-cell, lithium, and multiple series alkaline batteries. Target applications for the ISL9122 series include wireless earbuds, fitness bands, smartwatches, water and gas meters, portable medical devices, and a wide range of battery-operated smart IoT devices.
Features
- Ultra-low IQ, standby, and shutdown current
- High efficiency at light and heavy loads
- Fast transient response
- Dynamic VOUT change in 25 mV increments
- Multiple operating modes
- PFM/PWM
- Forced PWM
- Forced bypass
Applications
- Smartwatches and wristband devices
- Wireless earphones
- IoT devices
- Water, gas, and oil meters
- Portable medical devices
- Hearing aid devices