The ISL28025 is a bidirectional high-side and low-side digital current sense and voltage monitor with a serial interface. The device monitors power supply current and voltage, which provides the digital results along with calculated power. The ISL28025 provides tight accuracy of less than 0.1% for both voltage and current monitoring.

The VCC power can either be externally supplied or internally regulated, which allows the ISL28025 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 enable DC/DC converter output voltage margining (20 Pin QFN) Fault indication includes Bus Voltage window and over-current fast fault logic indication. The ISL28025 includes an integrated temperature sensor for monitoring.

The ISL28025 serial interface is PMBus compatible and operates down to 1.2V. It draws an average current of just 1.3mA and is available in the space saving 16 ball WLCSP package. It is also available in a 20 lead QFN 4x4 (1.85SQmm EPAD) The parts operate 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%
  • High or low (RTN) side sensing
  • Bidirectional current sensing
  • Auxiliary low voltage input channel
  • ΔΣADC, 16-bit native resolution
  • Programmable averaging modes
  • Internal 3.3V regulator
  • Internal temperature sense
  • Over-voltage/undervoltage and current fault monitoring with 500ns detection delay
  • 8-bit voltage output DAC (20 Pin QFN)
  • I2C/SMBus/PMBus interface that handles 1.2V supply
  • 55 I2C slave addresses




  • Data processing servers
  • DC power distribution
  • Telecom equipment
  • Portable communication equipment
  • DC/DC, AC/DC converters
  • Automotive power


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
Library EXE 26.24 MB
Library ZIP 7.43 MB
PCB Design Files ZIP 869 KB
6 items

Boards & Kits

Boards & Kits