The ISL28023 is a bidirectional high-side and low-side digital current sense and voltage monitor with a serial interface. The device monitors power supply current, voltage and provides the digital results along with calculated power. The ISL28023 provides tight accuracy of 0.05% for both voltage and current monitoring. The auxiliary input provides an additional power monitor function.

The VCC power can either be externally supplied or internally regulated, which allows the ISL28023 to handle a common-mode input voltage range from 0V to 60V. The wide range permits the device to handle telecom, automotive and industrial applications with minimal external circuitry.

An 8-bit voltage DAC enables a DC/DC converter output voltage margining. Fault indication includes a Bus Voltage window and overcurrent fast fault logic indication.

The ISL28023 serial interface is PMBus compatible and operates down to 1.2V voltage. It draws an average current of just 800µA and is available in the space saving 24 Ld QFN 4mmx4mm package. The part operates across the full industrial temperature range from -40°C to +125°C.


  • Bus voltage sense range: 0V to 60V
  • Voltage gain error: 0.05%
  • Current gain error: 0.05%
  • Internal temperature sensor accuracy: +1.0°C
  • High or low (RTN) side sensing
  • Bidirectional current sensing
  • Auxiliary low voltage channel
  • ∆∑ADC, 16-bit native resolution
  • Programmable averaging modes
  • Internal 3.3V regulator
  • Internal temperature sense
  • Overvoltage/undervoltage and current fault monitoring with 500ns detection delay
  • 8-bit voltage output DAC
  • I2C/SMBus/PMBus interface that handles 1.2V supply




  • Data processing servers
  • DC power distribution
  • Telecom equipment
  • Portable communication equipment
  • DC/DC, AC/DC converters
  • Many I2C DAC and ADC with alert applications


Design & Development

Software & Tools

Software & Tools

Software title
Software type
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
Simulator Renesas
PowerNavigator Software
Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
Monitor Debugger/RAM Monitor Renesas
2 items

Software Downloads

Type Title Date
Software & Tools - Software Log in to Download ZIP 145.10 MB
Software & Tools - Other Log in to Download ZIP 120.25 MB
Software & Tools - Software Log in to Download ZIP 96.49 MB
PCB Design Files ZIP 1.62 MB
Library EXE 26.24 MB
Library ZIP 7.43 MB
6 items

Boards & Kits

Boards & Kits