The EL7566 is a full-feature synchronous step-down regulator capable of up to 6A and 96% efficiency. The device operates from 3V to 6V input supply (VIN). With internal CMOS power FETs, the device can operate at up to 100% duty ratio, allowing for an output voltage range of 0. 8V to nearly VIN. An adjustable switching frequency up to 1MHz enables the use of small components, thereby reducing board area consumption to under 0. 72sq-in on one side of a PCB. The EL7566 operates in constant frequency PWM mode, making external synchronization possible. A soft-start feature is integrated in the EL7566 to limit in-rush currents and allow for a smooth voltage ramp from zero to regulation. Other start-up features are integrated to add flexibility for synchronizing many supplies in multiple configurations. The EL7566 also offers a voltage margining capability that shifts the output voltage ±5% for validation of system card performance and reliability during manufacturing tests. A junction temperature indicator conveniently monitors the silicon die temperature, saving time in thermal characterization. An easy-to-use simulation tool is available for download and can be used to modify design parameters such as switching frequency, voltage ripple, ambient temperature, as well as view schematics waveforms, efficiency graphs, and complete BOM with Gerber layout.


  • Integrated MOSFETs
  • 6A continuous output current
  • Up to 96% efficiency
  • Multiple supply start-up tracking
  • Built-in ±5% voltage margining
  • 3V to 6V input voltage
  • 0.72 in2 footprint with components on one side of PCB
  • Adjustable switching frequency to 1MHz
  • Oscillator synchronization possible
  • 100% duty ratio
  • Junction temperature indicator
  • Over-temperature protection
  • Internal soft-start
  • Variable output voltage down to 0.8V
  • Power-good indicator
  • 28 Ld HTSSOP package
  • Pb-free plus anneal available (RoHS compliant)


  • Point-of-regulation power supplies
  • FPGA Core and I/O supplies
  • DSP, CPU Core, and IO supplies
  • Logic/Bus supplies
  • Portable equipment

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TSSOP-EP Tube 50
Active TSSOP-EP Reel 2500
Active TSSOP-EP Reel 1000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
EL7566 Datasheet Datasheet PDF 835 KB
User Guides & Manuals
EL7566DRE-EVAL User Guide Manual PDF 388 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN9208: High Frequency Power Converters Application Note PDF 592 KB
AN1209: Intersil Integrated FET DC/DC Converters in Chinese Application Note PDF 1.56 MB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1096: Thermal Design Considerations�EL75XX Application Note PDF 453 KB
AN1101: Designing a High Efficiency DC-DC Converter with the EL75XX Application Note PDF 817 KB
AN1108: Applying Power MOSFET Drivers Application Note PDF 236 KB
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options Application Note PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods Application Note PDF 387 KB
AN7244: Understanding Power MOSFETs Application Note PDF 349 KB
PCN13032 - Alternate Manufacturing Site for the Listed Intersil EL7562* and EL7566* Products - Intersil (ISP) Palm Bay, Florida Product Change Notice PDF 133 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
EL7566DRE-EVAL Gerber Design Files Design File ZIP 223 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
EL7554, EL7566 Demo Board Software Library ZIP 470 KB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB

Boards & Kits

Part Number Title Type Company
EL7566DRE-EVAL Monolithic 6A DC/DC Step-Down Regulator Evaluation Board Evaluation Renesas