Integrated FET Regulators

Buck (Step-Down) and Boost (Step-Up) Regulators

Intersil offers a wide range of high performance integrated FET regulators including buck regulators (step-down) and boost regulators (step-up). Intersil also offers buck-boost devices that can provide a constant output voltage with an input voltage range above and below the output voltage.

About Integrated FET Switching Regulators

Intersil's switching regulators with integrated FETs are dc-dc converters that include buck regulators (step-down) and boost regulators (step-up), which operate with input voltages as low as 1.8V and as high as 60V, and will generate output voltages as low as 0.6V.

These switching voltage regulators can switch with speeds as high as 4MHz, provide high efficiency up to 95% and also have light load efficiency modes. The parts can be configured in many different configurations buck, boost, flyback, inverting in isolated and non-isolated applications.

Pack the Most Power in the Smallest Space! Intersil's comprehensive portfolio of low voltage, synchronous buck integrated FET switching regulators offer a compact solution size with outstanding performance.

Browse products using Parametric Search »

Videos & Resources
Play Video
3:02
Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
Play Video
9:50
Intersil introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
Play Video
11:01
Introducing the ISL78233, ISL78234 and ISL78235, Intersil’s automotive grade synchronous buck regulators for point-of-load applications.
Play Video
9:09
Learn more about the ISL8018 synchronous buck regulator and how to incorporate this device into your designs.
Play Video
3:02
Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
Play Video
9:50
Intersil introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
Play Video
11:01
Introducing the ISL78233, ISL78234 and ISL78235, Intersil’s automotive grade synchronous buck regulators for point-of-load applications.
Play Video
9:09
Learn more about the ISL8018 synchronous buck regulator and how to incorporate this device into your designs.
Play Video
3:02
Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
Play Video
9:50
Intersil introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
Play Video
11:01
Introducing the ISL78233, ISL78234 and ISL78235, Intersil’s automotive grade synchronous buck regulators for point-of-load applications.
Play Video
9:09
Learn more about the ISL8018 synchronous buck regulator and how to incorporate this device into your designs.

Reference Designs & Evaluation Platforms

ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL85005EVAL1Z and ISL85005AEVAL1Z evaluate the performance of the ISL85005 and ISL85005A high efficiency 5A synchronous buck regulators.
ISL8018DEMO1Z
  DEMO BOARD
ISL8018DEMO1Z is used for a quick and easy demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.
ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL85005EVAL1Z and ISL85005AEVAL1Z evaluate the performance of the ISL85005 and ISL85005A high efficiency 5A synchronous buck regulators.
ISL8018DEMO1Z
  DEMO BOARD
ISL8018DEMO1Z is used for a quick and easy demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.
ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL85005EVAL1Z and ISL85005AEVAL1Z evaluate the performance of the ISL85005 and ISL85005A high efficiency 5A synchronous buck regulators.
ISL8018DEMO1Z
  DEMO BOARD
ISL8018DEMO1Z is used for a quick and easy demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.

Selection Guides

Consumer Electronics ICs Consumer Electronics ICs

lc-114.pdf (2.14 MB)
May 2017

Industrial Power Solutions Industrial Power Solutions

lc-115.pdf (2.01 MB)
Apr 2017

Infrastructure Power Solutions Infrastructure Power Solutions

lc-113.pdf (2.26 MB)
Apr 2017

White Papers

How to Protect Buck Regulators from Overcurrent Damage How to Protect Buck Regulators from Overcurrent Damage

how-to-protect-buck-regulators.pdf (367 KB)
Apr 2017

How to Improve DC/DC Converter Performance with Phase Shifting Time Delay How to Improve DC/DC Converter Performance with Phase Shifting Time Delay

improving-dc-dc-converter-performance.pdf (353 KB)
Dec 2015

Keeping Pace with Power Hungry Mobile Devices Keeping Pace with Power Hungry Mobile Devices

keeping-pace-with-power-hungry-mobile.pdf (179 KB)
Jul 2015

Featured Tools

Learn About Intersil's PowerCompass Tool Learn About Intersil's PowerCompass Tool

lc-116.pdf (247 KB)
Nov 2016

PowerCompass Online Tool PowerCompass Online Tool

The PowerCompass™ tool helps you find Intersil parts that match your requirements, performs system analysis & more.