Intersil Introduces Industry's Highest Voltage Input (28V), Low-Current Single-Cell Li-Ion Charger IC for Bluetooth Headset Applications

Intersil Corporation, a world leader in the design and manufacture of high-performance analog solutions, today announced the ISL9204, growing its extensive portfolio of fully-integrated single-cell Li-ion (Lithium ion) battery chargers.
The ISL9204's 28V input voltage rating eliminates the over-voltage protection circuit normally required in low-input chargers, reducing component count and overall system cost. The charger accepts input voltages up to 28V but is disabled when the input voltage exceeds the OVP (over-voltage protection) threshold minimum of 10V, enhancing system protection. This device is optimized for smaller cell capacities by setting the trickle charge threshold at 2.7V (recommended by small cell manufacturers) and offering charge current accuracy of 10 percent between 75mA and 150mA.

"Intersil's ISL9204 is optimized to address the charging requirements of low-capacity 1-cell Li-ion applications such as Bluetooth headsets and small portable multimedia players," said Andrew Baker, product marketing manager of Intersil's Handheld Power product group. "The ISL9204 offers reduced system cost with increased safety by using integrated over-voltage
protection to prevent excessive power dissipation. The tiny 2x3 mm DFN (dual flat no-lead) package enables it to be used in space-constrained and thermally sensitive applications."

Integration and Efficiency: A
Powerful Combination

The ISL9204 performs the constant current/constant voltage (CC/CV) charge function required by Li-ion batteries. The charge current and end-of-charge (EOC) current are programmable with external resistors. When the charge current reduces to the programmable EOC current level during the constant voltage (CV) charge phase, an EOC indication is provided by the
charge (CHG) pin, which is an open-drain output. Two indication pins,power present (PPR) and CHG, allow simple interface to a microprocessor or LEDs. The Company has secured design wins and is shipping the ISL9204 in production.

"The Bluetooth headset market has been under development for over five
years," said Susie Inouye, research director and principal analyst of
Databeans, Inc. "Only recently has the market really begun to take off,
reaching levels that the analysts had earlier predicted, driven by improved
form factors and lower prices. And now with most phones having Bluetooth
built in, the number of headset shipments could reach well over 100 million
units over the next few years."

Key Features

-- 28V maximum for the voltage power input
-- Complete charger for single-cell Li-ion/polymer batteries
-- Integrated pass element and current sensor
-- No external blocking diode required
-- One percent voltage accuracy
-- Programmable EOC current
-- Charge current thermal foldback for thermal protection

Target Applications

-- Bluetooth headsets
-- MP3/Multimedia players
-- Stand-alone chargers
-- Mobile phones
-- Other handheld devices

About Intersil's Power Management Portfolio

Intersil is a recognized global leader in power management solutions,
offering a broad portfolio of products that simplify a variety of power
designs. Intersil has a full family of high-performance battery chargers
for Li-ion/Li-polymer applications. These chargers feature innovative
Thermaguard™ and AnyAdapter™ technology that significantly improves
thermal performance while greatly simplifying system design. Integrating
typical external components such as MOSFETs, reverse blocking diode and
current sense functions into a highly compact, thermally-enhanced package
minimizes total application size and lowers overall system cost.
To learn more, visit Intersil's Power Management Web site at
http://www.intersil.com/power.

Pricing and Availability

The ISL9204 is available now in an 8-lead DFN standard or lead-free package
and is priced at $1.15 in 1,000-unit quantities. More information on the
ISL9204 is available at
http://www.intersil.com/cda/deviceinfo/0,1477,ISL9204,0.html. A large
selection of power products is supported by Intersil's iSim™ online
design tool. To explore these solutions, visit
http://www.intersil.com/isim/. To view a broad range of application block
diagrams, visit Intersil's Application Design Center at
http://www.intersil.com/apps.

Note to editors: To view a high-resolution downloadable photo of the
ISL9204, visit Intersil's photo room at:
http://www.intersil.com/pressroom/photoarchives.asp.

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 www.intersil.com.

iSim, Thermaguard and AnyAdapter are trademarks of Intersil Corporation.
All other brands or product names are trademarks or registered trademarks
of their respective holders.









Media Contact
Kim Fehrt
Public Relations Manager
Intersil Corporation
(408) 546-3566
Email Contact
SOURCE: Intersil

Author:  

Email:    

Topic:    

Content:

Related Articles

• Nam Tai Electronics, Inc. Conditional General Cash Offer to Privatize its 2 Subsidiaries Listed on the Hong Kong Stock Exchange
  23 October 2005



• Winland Electronics, Inc. Announces Record Third Quarter 2005 Revenue of $7.4 Million and Earnings of $0.12 per Share
  21 October 2005



• ESCA Catalyst 2005 Winter Symposium Explores Constant Change in the Electronics Supply Chain; Offers Futuristic Look at the Industry
  20 October 2005



• LG Electronics Launches Production of HDTV Set-Top Boxes for DIRECTV
  20 October 2005



• NEC Electronics America Introduces MOSFET Devices With Super Low On Resistance
  18 October 2005



• International ISP Dialer.net Provides Worldwide Visitors with Global Roaming Service and Internet Access at Hong Kong Electronics Fair
  16 October 2005



• Record-breaking China Sourcing Fair: Electronics & Components Opened Today in Shanghai
  15 October 2005



• Emerging Applications and Materials Technologies Will Drive the $9.1-Billion Market for Mobile Batteries, Says New Report
  12 October 2005



• X-EMI Adds XM1011 Clock Synthesizer to Product Portfolio, Unveils to Asian Customer Base at Taitronics International Electronics Show
  12 October 2005



• Richardson Electronics Announces Stockholders' Meeting and Web Conference Availability
  12 October 2005