The ISL9440EVAL2Z evaluation board features the ISL9440 triple, 180° out-of-phase, step-down PWM and single linear controller. The ISL9440 is a quad-output controller that integrates three PWM synchronous buck controllers and one low-dropout linear regulator controller. The ISL9440 offers internal soft-start, independent enable functions and integrates UV/OV/OC/OT protections. Its current mode control architecture and internal compensation network keep peripheral component count minimal. A switching frequency of 300kHz minimizes losses while the strong gate drivers deliver up to 12A to each PWM channel.


  • DC/DC, step-down with LDO
  • Current - output: 6A, 6A, 4A, 800mA
  • Switching frequency: 300kHz
  • Soft-start timing: 1.7ms
  • Outputs/Type: 4, non-isolated
  • Voltage - input: 6V to 16V


  • Satellite and cable set-top boxes
  • Cable modems
  • VoX gateway devices
  • NAS/SAN devices

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL9440B, ISL9440C Datasheet Datasheet PDF 2.17 MB
ISL9440, ISL9440A, ISL9441 Datasheet 日本語 Datasheet PDF 1.52 MB
User Guides & Manuals
ISL9440CEVAL1Z User Guide Guide PDF 1.39 MB
ISL9440EVAL2Z User Guide Manual PDF 1.22 MB
ISL9440AEVAL1Z User Guide Manual PDF 1.32 MB
ISL9440BEVAL1Z User Guide Manual PDF 1.23 MB
ISL9440EVAL2Z Design Files Design File ZIP 349 KB
ISL9440xEVAL1Z Design Files Design File ZIP 274 KB