The ISL95816 Pulse Width Modulation (PWM) controller IC provides a complete solution for VR12. 5™ compliant microprocessor core power supplies. It provides the control and protection for a Voltage Regulator (VR). The VR can operate in 4-, 3-, 2- or 1-phase configurations. The VR uses a serial control bus to communicate with the CPU and achieve lower cost and smaller board area. The VR utilizes Renesas’s Robust Ripple Regulator R3 Technology™. The R3 modulator has numerous advantages compared to traditional modulators, including faster transient response, variable switching frequency during load transients, and improved light load efficiency due to its ability to automatically change switching frequency. The ISL95816 has several other key features. It supports either DCR current sensing with a single NTC thermistor for DCR temperature compensation, or more precise resistor current sensing if desired; remote voltage sense; programmable VBOOT voltage, IMAX, voltage transition slew rate and switching frequency; adjustable overcurrent protection; and Power-Good signal.


  • Serial data bus
  • Configurable 4-, 3-, 2- or 1-phase
  • R3 Modulator
  • Excellent transient response
  • High light load efficiency
  • 0.5% System accuracy over-temperature
  • Supports multiple current sensing methods
  • Lossless inductor DCR current sensing
  • Precision resistor current sensing
  • Differential remote voltage sensing
  • Programmable VBOOT voltage at start-up
  • Resistor programmable IMAX, VBOOT, voltage transition slew rate and switching frequency
  • Adaptive body diode conduction time reduction


  • VR125 Notebook and Desktop Computers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 75
Active QFN Reel 6000
Active QFN Tube 75
Active QFN Reel 6000

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL95816 Datasheet Datasheet PDF 2.16 MB
ISL95816 Data Short Short Form Datasheet PDF 194 KB
User Guides & Manuals
ISL95816EVAL7Z User Guide Manual PDF 6.30 MB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCN21005 - Alternate assembly facility of the listed Renesas DFN / QFN / TDFN / TQFN packaged products Product Change Notice PDF 158 KB
PCN14008 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN/TQFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and Carsem (CAS) - Ipoh, Malaysia 4BA and 4BB Product Change Notice PDF 146 KB
PLC19018A - Rescinding of 8 products from PLC19018 Product Life Cycle Notice PDF 224 KB
PLC19018 - General 1H PLC Notice Product Life Cycle Notice PDF 229 KB