IR's IR3823 3A SupIRBuck® Integrated Voltage Regulator Delivers 97.5% Efficiency in an Ultra-Compact

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IR's IR3823 3A SupIRBuck ® Integrated Voltage Regulator Delivers 97.5% Efficiency in an Ultra-Compact 3.5x3.5mm Package

EL SEGUNDO, Calif.--(BUSINESS WIRE)-- International Rectifier, IR® (NYS: IRF) , a world leader in power management technology, today introduced the IR3823 SupIRBuck® integrated voltage regulator designed for space-constrained, energy efficient netcom, server and storage applications.

The IR3823 delivers up to 3A with superior efficiency in an ultra-compact 3.5x3.5mm package. Efficiencies in excess of 97.5% are obtainable for designs converting power from a 6V input to a 4.8V output. The extremely high initial efficiency allows switching at up to 1.5MHz from a 12V supply to enable a complete 3A power supply solution in less than 130mm2. Featuring constant frequency and virtually jitter-free operation with synchronization capability, the new device is well suited to noise-sensitive applications, while the higher bandwidth reduces component count to shrink PCB footprint. A tri-level selectable soft-start feature is also offered for ease of sequencing.

"Offering excellent thermal performance, the IR3823 is an easy-to-implement solution in less than 130mm2 that allows power conversion directly from a 12V input for space constrained, low current point-of-load applications that require benchmark performance," said Ramesh Balasubramaniam, Director of Marketing, IR's Enterprise Power Business Unit.

The IR3823 features programmable switching frequency from 300kHz to 1.5MHz. Other key functions include thermally compensated over-current protection, output over-voltage protection and thermal shutdown.

More information is available on the International Rectifier website at

Design Tools

Datasheets are posted on the International Rectifier website at

A user friendly, interactive, web-based tool is available at and enables the rapid selection and simulation of selected SupIRBuck products. A SupIRBuck Excel spreadsheet design tool and Icepak thermal model are also available.

The IRDC3823 SupIRBuck reference design featuring the new device is also offered.

Price and Availability

Pricing for the IR3823 begins at US $1.13 each in 100,000-unit quantities. Pricing for the IRDC3823 SupIRBuck reference design starts at US $29 per kit. Production orders are available immediately. Prices are subject to change.

About International Rectifier

International Rectifier (NYS: IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to

Trademark Notice

IR® and SupIRBuck®are registered trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.

International Rectifier Corporation
Sian Cummins, 1-310-252-7148

KEYWORDS:   United States  North America  California


The article IR's IR3823 3A SupIRBuck® Integrated Voltage Regulator Delivers 97.5% Efficiency in an Ultra-Compact 3.5x3.5mm Package originally appeared on

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