Small integrated voltage regulator delivers 97.5 percent efficiency

Small integrated voltage regulator delivers 97.5 percent efficiency

New Products |
International Rectifier has introduced the IR3823 SupIRBuck integrated voltage regulator designed for space-constrained, energy efficient netcom, server and storage applications.
By eeNews Europe


The IR3823 delivers up to 3 A with superior efficiency in an ultra-compact 3.5×3.5mm package. Efficiencies in excess of 97.5% are obtainable for designs converting power from a 6 V input to a 4.8 V output. The extremely high initial efficiency allows switching at up to 1.5 MHz from a 12 V supply to enable a complete 3 A power supply solution in less than 130 mm². 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.

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

A user friendly, interactive, SupIRBuck tool 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.

Availability and Pricing

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

More information about the IR3823 SupIRBuck integrated voltage regulator at

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