The ISL8117 is a synchronous buck controller used to generate POL voltage rails and bias voltage rails for a wide variety of applications in industrial and general purpose segments. Its wide input and output voltage ranges make it suitable for telecommunication and after-market automotive applications. The ISL8117 uses the valley current modulation technique to bring hassle-free power supply design with a minimal number of components and complete protection from unwanted events. The ISL8117 offers programmable soft-start and enable functions along with a power-good indicator for ease of supply rail sequencing and other housekeeping requirements. In ideal situations, a complete power supply circuit can be designed with 10 external components and provide OV/OC/OT protections in a space conscious 16 Ld 4mmx4mm QFN or easy to assemble 6. 4mmx5mm 16 Ld HTSSOP package. Both packages use an EPAD to improve thermal dissipation and noise immunity. Low pin count, fewer external components, and default internal values makes the ISL8117 an ideal solution for quick to market simple power supply designs. The ISL8117 uses internal loop compensation and single resistor settings for other functions such as operating frequency and overcurrent protection. Its current mode control with VIN feedforward enables it to cover various applications even with fixed internal compensations. The unique DEM/Skipping mode at light-load dramatically lowers standby power consumption with consistent output ripple over different load levels.

Features

  • Wide input voltage range: 4.5V to 60V
  • Wide output voltage range: 0.6V to 54V
  • Light-load efficiency enhancement
  • Low ripple Diode Emulation mode with pulse skipping
  • Programmable soft-start
  • Supports prebiased output with SR soft-start
  • Programmable frequency: 100kHz to 2MHz
  • External sync
  • PGOOD indicator
  • Forced PWM
  • Adaptive shoot-through protection
  • No external current sense resistor
  • Use lower MOSFET rDS(ON)
  • Complete protection
  • Overcurrent, overvoltage, over-temperature, undervoltage
  • Pb-free (RoHS compliant)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability
Active QFN Reel 250
Availability
Active TSSOP-EP Tube 960
Availability
Active TSSOP-EP Reel 2500
Availability
Active TSSOP-EP Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL8117 Datasheet Datasheet PDF 836 KB
User Guides & Manuals
ISL8117DEMO4Z User Guide Manual PDF 880 KB
ISL8117EVAL2Z User Guide Manual PDF 1.06 MB
ISL8117EVAL1Z User Guide Manual PDF 1.06 MB
ISL8117DEMO3Z User Guide Manual PDF 831 KB
ISL8117DEMO2Z User Guide Manual PDF 1.00 MB
ISL8117DEMO1Z User Guide Manual PDF 1.08 MB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How to Select a PWM Controller for Narrow On-Time Buck Conversion 简体中文 White Paper PDF 322 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Downloads
ISL8117EVAL1Z Design Files Design File ZIP 933 KB
ISL8117EVAL2Z Design Files Design File ZIP 655 KB
ISL8117DEMO2Z Design Files Design File ZIP 511 KB
ISL8117DEMO1Z Design Files Design File ZIP 724 KB
ISL8117DEMO4Z Design Files Design File ZIP 2.08 MB
ISL8117DEMO3Z Design Files Design File ZIP 385 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator 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. Renesas

Boards & Kits

Part Number Title Type Company
ISL8117DEMO1Z Synchronous Step-down PWM Controller Demonstration Board Demonstration Renesas
ISL8117DEMO2Z Synchronous Step-down PWM Controller Demonstration Board Demonstration Renesas
ISL8117DEMO3Z Synchronous Step-down PWM Controller Demonstration Board Demonstration Renesas
ISL8117DEMO4Z Synchronous Step-down PWM Controller Demonstration Board Demonstration Renesas
ISL8117EVAL1Z Synchronous Step-down PWM Controller Evaluation Board Evaluation Renesas
ISL8117EVAL2Z Synchronous Step-down PWM Controller Evaluation Board Evaluation Renesas