The ISL8700, ISL8701, ISL8702 family of ICs provide four delay adjustable sequenced outputs while monitoring an input voltage all with a minimum of external components. High performance DSP, FPGA, µP and various subsystems require input power sequencing for proper functionality at initial power-up and the ISL870X provides this function while monitoring the distributed voltage for over and undervoltage compliance. The ISL8700 and ISL8701 operate over the +2. 5V to +24V nominal voltage range, whereas the ISL8702 operates over the 2. 5V to +12V range. All three have a user adjustable time from UV and OV voltage compliance to sequencing start via an external capacitor when in auto start mode and adjustable time delay to subsequent ENABLE output signal via external resistors. Additionally, the ISL8702 provides an input for sequencing on and off operation (SEQ_EN) and for voltage window compliance reporting (FAULT) over the +2. 5V to +12V voltage range. Easily daisy chained for more than 4 sequenced signals. Altogether, the ISL870X provides these adjustable features with a minimum of external BOM. See Figure 1 for typical implementation.


  • Adjustable Delay to Subsequent Enable Signal
  • Adjustable Delay to Sequence Auto Start
  • Adjustable Distributed Voltage Monitoring
  • Under and Overvoltage Adjustable Delay to Auto Start Sequence
  • I/O Options
  • ENABLE (ISL8700, ISL8702) and ENABLE# (ISL8701) SEQ_EN (ISL8702)
  • Voltage Compliance Fault Output
  • Pb-Free (RoHS Compliant)


  • Power Supply Sequencing
  • System Timing Function


Title language Type Format File Size Date
star ISL8700, ISL8701, ISL8702 Datasheet Datasheet PDF 707 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products Product Change Notice PDF 266 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN13026 - Alternate Manufacturing Site for Assembly of the Listed Intersil SOIC Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 77 KB
PCN13013 - Test Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 207 KB
PCN12068 - SOIC w/ Copper Bond Wire @ ASECL as Alternate Assembly Site Product Change Notice PDF 108 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How Green is Your Cloud? White Paper PDF 295 KB


memoryBoards & Kits

Part Number Title Type Company
ISLUSPLUS-UC1DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas
ISLUSPLUS-UC2DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas