Intersil Announces World's Smallest High Voltage Input `28V' Charger

Intersil Announces World's Smallest High Voltage Input `28V' Charger for Single-cell Li-ion or Li-polymer Batteries

    Business Editors/Technology Editors

    MILPITAS, CA--(BUSINESS WIRE)--Feb. 23, 2005--Intersil Corporation (NASDAQ:ISIL)

--	The ISL6294 is in Production With Top Tier Cell Phone Manufacturers
--	Ideally suited for Cell and Smart Phones, PDAs, and Mini-Disk, Multimedia and MP3 Players

    Intersil Corporation (NASDAQ:ISIL), a world leader in the design and manufacture of high performance analog solutions, announced today a new battery charger with high voltage inputs in an extremely compact 2 mm x 3 mm DFN package. The ISL6294 is a highly integrated solution that utilizes a constant current (CC)/constant voltage (CV) charging profile, which is required by single-cell Li-ion or Li-polymer batteries. The device accepts input voltages up to 28V but is disabled when the input voltage exceeds the over-voltage protection (OVP) threshold of 6.8V (typical). This prevents excessive power dissipation and enhances charger system safety. The 28V rating eliminates the need for the over-voltage protection circuitry typically required by devices with lower input voltage ratings.
    "Intersil has solved three critical issues that handheld product manufacturers typically encounter in their battery management designs - lack of space, the need to improve reliability and safety, and the need to continually reduce total solution cost," said Arman Naghavi, director of Handheld Products at Intersil. "The industry-leading 28V input rating of the ISL6294 allows designers to remove the large, costly OVP circuitry required to protect against input voltage surges caused by the power grid or by non-OEM counterfeit wall adapters. Input over-voltage incidents can cause a significant rate of field failures for battery chargers, resulting in customer dissatisfaction and costly warranty returns."
    The ISL6294 charges a Li-ion or Li-polymer battery using a CC/CV profile. The CC mode charge rate is set with an external resistor (Iref). The CV mode output is fixed at 4.2V. If the battery voltage is below a typical 2.55V trickle charge threshold, the ISL6294 charges the battery with a trickle current of 19 percent of Iref until the battery voltage rises above the trickle charge threshold. Fast charge CC mode is maintained at the rate determined by programming Iref until the cell voltage rises to 4.2V. Upon reaching 4.2V, the charger enters CV and the output voltage is regulated at 4.2V +/-1 percent.
    End-of-charge indication is programmable using an external resistor, although charging is not terminated. This feature provides the designer the flexibility to allow charging to continue or to terminate charging by interfacing the status and enable pins to a microcontroller.
    The ISL6294 features Thermaguard(TM) technology, a charge current thermal fold-back feature which guarantees safe operation in space-limited designs where thermal dissipation is high, by limiting the die temperature to 107 degrees C through the reduction of charge current. The device consumes less than 1uA of leakage current from the battery when no input power is attached or the charger is disabled.

    ISL6294 Features

    -- Complete charger for single-cell Li-ion/Li-polymer batteries

    -- Integrated pass element and current sensor

    -- 28V maximum input voltage rating

    -- 700mA maximum charge rate

    -- No external blocking diode required

    -- Low component count and cost

    -- One percent voltage accuracy

    -- Programmable charge current

    -- Programmable end-of-charge current

    -- Thermaguard charge current thermal foldback for thermal
    protection

    -- Trickle charge for fully discharged batteries

    -- Power presence and charge indications

    -- Ambient temperature range: -40 degrees C to 85 degrees C

    Applications

    -- Mobile phones

    -- PDAs

    -- MP3 players

    -- Stand-alone chargers

    -- Consumer handheld devices

    -- Handheld test equipment

    -- Portable medical devices

    -- Industrial bar code scanners

    The ISL6294 is available now in an 8-lead 2 mm x 3 mm DFN Pb-free package. The suggested price in 10,000 unit quantities is $0.80 for each IC. Additional information on this device can be obtained online from Intersil's web site at: http://www.intersil.com/cda/deviceinfo/0,0,ISL6294,0.html

    About Intersil

    Intersil Corporation, a Nasdaq 100 Index company, is a leader in the design and manufacture of high performance analog semiconductors. The company's products address three of the industry's fastest growing markets: flat panel displays, optical storage (CD and DVD recordable) and power management. Intersil products include power management devices for battery management, hot-swap and hot-plug controllers, linear regulators, supervisory ICs, switching DC-DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and rad-hard applications. 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.

    This release may include "forward looking statements" that are subject to risks and uncertainties. For information identifying economic, political, climatic, currency, regulatory, technological, competitive and some other important factors that could cause actual results to differ materially from those anticipated in the forward looking statements, see Intersil's Safe Harbor Forward Looking Statement disclaimer found at http://www.intersil.com/legal.asp, as well as Intersil's SEC filings as updated from time to time, found at http://www.sec.gov.

    All trademarks mentioned are the property of their respective owners.

--30--PP/mi*

CONTACT: Intersil Corporation, Palm Bay, Fla. Ron Paciello, 321-724-7184 E-Mail: rpaciell@intersil.com or John Allen, 321-729-4928 E-Mail: jallen02@intersil.com

KEYWORD: CALIFORNIA INDUSTRY KEYWORD: HARDWARE SOFTWARE NETWORKING PRODUCT SOURCE: ntersil Corporation

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