The ISL9440xEVAL1Z evaluation boards are used to evaluate the performance of the ISL9440A, ISL9440B and ISL9440C quad-output synchronous buck controllers.

The ISL9440A, ISL9440B and ISL9440C are quad-output controllers that integrate three PWM synchronous buck controllers and one low-dropout linear regulator controller. The ISL9440A offers internal soft-start, independent enable functions and integrates UV/OV/OC/OT protections. While the ISL9440B and ISL9440C offer programmable soft-start, independent enable functions and integrate OV/OC/OT protections. All three devices offer current mode control architecture and an internal compensation network, keeping peripheral component count minimal.


  • DC/DC, step-down with LDO
  • Current - output: 6A, 6A, 4A, 800mA
  • Switching frequency (ISL9440A and ISL9440C): 600kHz
  • Switching frequency (ISL9440B): 300kHz
  • Soft-start timing (ISL9440A): 1.7ms
  • Soft-start timing (ISL9440B and ISL9440C): Programmable
  • Voltage - input: 6V to 16V


  • Satellite and cable set-top boxes
  • Cable modems
  • VoX gateway devices
  • NAS/SAN devices
  • ATX power supply (ISL9440B and ISL9440C)


タイトル language 分類 形式 サイズ 日付
ISL9440B, ISL9440C Datasheet データシート PDF 2.17 MB
ISL9440, ISL9440A, ISL9441 Japanese Datasheet English データシート PDF 105 KB
ISL9440AEVAL1Z User Guide マニュアル-開発ツール PDF 1.32 MB
ISL9440BEVAL1Z User Guide マニュアル-開発ツール PDF 1.23 MB
ISL9440CEVAL1Z User Guide ガイド PDF 1.39 MB
ISL9440EVAL2Z User Guide マニュアル-開発ツール PDF 1.22 MB


タイトル language 分類 形式 サイズ 日付
ISL9440EVAL2Z Design Files PCB設計ファイル ZIP 349 KB
ISL9440xEVAL1Z Design Files PCB設計ファイル ZIP 274 KB