Intersil's New Triple Low-Dropout Regulator IC Saves Space and Reduces Costs in 802.11 Wireless LAN Devices

Business Wire, Nov 21, 2002

Business Editors/High-Tech Writers

IRVINE, Calif.--(BUSINESS WIRE)--Nov. 21, 2002

New Multi-Output Regulator Reduces BOM For Intersil's PRISM Chip

Set Reference Designs

Intersil Corporation (Nasdaq:ISIL), a world leader in the design and manufacture of high performance analog and wireless networking solutions, today announced full market release of the new ISL6411 triple low-dropout (LDO) regulator IC. The ISL6411 IC significantly reduces board space and bill of materials (BOM) by combining three LDO Regulators, a reset function and extensive circuit protection functions into a single chip.

This innovative single chip power solution makes it easy for designers of Wireless Local Area Networking (WLAN) systems to power many of today's small form factor industry standard cards such as PCMCIA, mini-PCI and Cardbus-32. It is also well suited for WLAN access points used in both business and residential settings.

"The ISL6411 is a strategic development for Intersil because it replaces three regulators and numerous support components on our PRISM WLAN chip set reference designs," said Larry Ciaccia, vice president and general manager of Intersil's Wireless Product Group. "High integration and efficiency, ultra low noise and voltage sequencing in a single thin profile package makes the ISL6411 an ideal power solution for our PRISM chip sets. Naturally, this enables us to price our WLAN solutions more aggressively in a highly competitive market."

"We are excited about this new triple LDO, which is the first application-specific power management solution for the PRISM chip sets," said Rick Furtney, vice president and general manager of Intersil's High Performance Analog Product Group. "We are confident that this solution will provide great performance and high value for Intersil's PRISM WLAN customers."

The ISL6411 is an ultra low noise triple output linear regulator with microprocessor reset and is optimized for powering wireless chip sets. The IC accepts an input voltage range of 2.5 V to 3.8 V and provides three regulated output voltages: 1.8 V (LDO1) for Baseband Processor/Media Access Controller (BBP/MAC), 2.84 V (LDO2) for analog functions, and another 2.84 V (LDO3) for voltage controlled oscillator (VCO). On chip logic provides sequencing for BBP/MAC and analog supply voltage outputs. LDO3 features ultra low noise that does not generally exceed 30 uV RMS to aid VCO stability. High integration and the thin Quad Flat No-lead (QFN) package provide a small DC-DC converter size.

    ISL6411 Features Summary

    - Integrates 3 regulators and a reset function to save space and
      lowers BOM cost

    - Ultra low dropout regulators for high efficiency

    - Ultra low noise output - typically less than 30 uV for VCO
      supply

    - Allows the use of smaller ceramic output capacitors

    - Voltage sequencing for BBP/MAC and analog supplies

    - Extensive protection and monitoring features

        - Thermal shutdown

        - Current limiting

        - Short circuit protection

        - Reverse battery protection

        - PGood

    - Programmable reset delay

    - Complimentary reset outputs

    - Small DC-DC converter size - Typically 30% less board area

    - Low profile QFN 4 X 4 mm package

    - Proven reference design for total WLAN system solution

    - Intersil quality and guaranteed delivery

ISL6411 Pricing and Availability

The ISL6411 is available now - priced at $1.32 each in 1000 unit quantities.

Intersil Elantec Means More for Our Customers

Intersil Corporation is a global semiconductor leader in the design and manufacture of high performance analog and wireless networking solutions. The acquisition of Elantec Semiconductor, Inc., expanded Intersil's product portfolios to address four fast growing markets - flat panel displays, optical storage (CD and DVD recordable), power management and wireless networking. Intersil brings added customer value in providing complete silicon, software and reference design solutions to new products that enhance the computing experience for people wherever they live, work or travel. For more information about Intersil or to find out how to become a member of our winning team, visit the company's web site and career page at: http://www.intersil.com

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