The ISL95338EVAL1Z evaluation board is used to evaluate the ISL95338 bidirectional buck-boost voltage regulator, which provides bidirectional buck-boost voltage regulation and protection features. Renesas' advanced R3™ Technology is used to provide high light-load efficiency, fast transient response and seamless DCM/CCM transitions.

The ISL95338 takes input power from a wide range of DC power sources (conventional AC/DC ADPs, USB PD ports, travel ADPs, etc.) and safely converts it to a regulated voltage up to 24V. The ISL95338 also can convert a wide range DC power source connected at its output (system side) to a regulated voltage to its input (ADP side). This bidirectional buck-boost regulation feature makes its application very flexible.

The ISL95338 includes various system operation functionalities such as forward mode enable, reverse mode enable, programmable soft-start time, and adjustable VOUT, in both forward direction and reverse direction. The protection functionalities include OCP, OVP, UVP, OTP, etc.

The ISL95338 offers serial communication using SMBus/I2C that allows programming of many critical parameters to deliver a customized solution. These programming parameters include, but are not limited to: output current limit, input current limit and output voltage setting.


  • Bidirectional buck, boost and buck-boost operation
  • Input voltage range 3.8V to 24V (no dead zone)
  • Output voltage up to 20V
  • Up to 1MHz switching frequency
  • Programmable soft-start time
  • LDO output for VDD and VDDP
  • System status alert function
  • Bidirectional internal discharge function
  • Active switching for negative voltage transitions
  • Bypass mode in both directions
  • Forward mode enable, Reverse mode enable
  • OCP, OVP, UVP, and OTP protections
  • SMBus and auto-increment I2C compatible


  • Tablets, ultrabooks, power banks, mobile devices, and USB-C

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL95338 Datasheet Datasheet PDF 843 KB
User Guides & Manuals
ISL95338EVAL1Z User Guide Manual PDF 1.56 MB
ISL95338 Software Installation Guide Manual PDF 552 KB
ISL95338EVAL1Z Design Files Design File ZIP 1.56 MB
ISL95338EVAL1Z Software Installation Wizard Library ZIP 779.40 MB