The ISL9122AIIN-EVZ platform allows quick evaluation of the high-performance features of the ISL9122A ultra-low IQ buck-boost regulator in the WLCSP package. The ISL9122A is a highly integrated non-inverting buck-boost switching regulator that accepts input voltages both above or below the regulated output voltage. This regulator automatically transitions between buck and boost modes without significant output disturbance. And, it features an extremely low quiescent current consumption, excellent efficiency, and an I2C interface, which allows the user to access its internal registers for output voltage and operation mode control.


  • Small, compact design
  • I2C interface for programmable VOUT, slew rate and various operation modes (forced bypass, auto-PFM, forced PWM)
  • Connectors, test points and jumpers for easy probing



  • Smart watches and wristband devices
  • Wireless earphones
  • Internet of Things (IoT) devices
  • Water, gas and oil meters
  • Portable medical devices


Type Date
PDF 1.02 MB Manual - Development Tools
PDF 893 KB Datasheet
PDF 795 KB Manual - Development Tools
3 items

Design & Development

Software & Tools

Software Downloads

Type Date
ZIP 498 KB Software & Tools - Evaluation Software
ZIP 2.99 MB PCB Design Files
2 items
Lab on the Cloud

Lab on the Cloud

Renesas' Lab on the Cloud is an online environment where Renesas solutions, including popular evaluation boards, winning combinations and software, are hosted in a remote lab that customers access and test online.

High Efficiency IoT Battery System

This cost-effective, wide application solution shows the ISL9122A ultra-low IQ buck-boost regulator, where the output voltage is adjustable using I2C.