LED Charge Pump delivers 400 mA output current.
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Press Release Summary:
Operating within 2.7-5.5 V input range at 2.4 MHz switching frequency, SP6686 features current regulated buck/boost charge pump topology and 2 independently adjustable, bit selectable output current levels. It requires 3 external capacitors and automatically transitions from linear buck mode to 2x boost mode based on battery input voltage. Offered in 10-pin 3 x 3 mm DFN package, IC is targeted for use in camera flash applications in cell phones.
Original Press Release:
Sipex Expands LED Camera Flash Driver Family with 400mA Charge Pump that Offers Industry's Smallest Solution
(Milpitas, CA - April 6, 2005) - Sipex Corporation (NASDAQ: SIPX), a leading supplier of high performance, analog integrated circuits (ICs), further expands its family of LED drivers with the SP6686, a current regulated buck/boost charge pump delivering 400mA. Providing two independently adjustable and selectable output current levels for flash and torch modes, the SP6686 is an ideal solution for camera flash applications in cell phones.
Operating at an industry leading 2.4 MHz switching frequency, the SP6686 requires only three tiny external capacitors (0.47µF, 1µF, and 2.2µF), reducing the overall solution's footprint to new levels.
The SP6686 delivers up to 94% efficiency thanks to a proprietary feature that enables the IC to automatically transition from the linear buck mode to the 2x boost mode based on the battery input voltage. This also ensures the current does not depend on the LED forward voltage. An extremely low output equivalent resistance and reference voltage allows for the highest white LED flash brightness and an ultra low dropout voltage. The SP6686 also features a very low shutdown current, an automatic soft-start mode to limit inrush current, as well as over current, over voltage and thermal-shutdown control.
"The new SP6686 and the recently announced SP6685 are breakthrough products for high end and mainstream cell phone camera flash applications, offering high efficiency, the industry's smallest solution size and reduced external component cost," said Kevin Plouse, senior vice president of marketing and business development.
SP6686 Key Features (Typical)
Fast 2.4MHz Operation Allowing for Smallest Peripherals and Low Noise
Current Regulated Buck/Boost Charge Pump Topology
No Inductor Necessary
Output Current: 400mA
Two Independently Adjustable and Bit Selectable Output Current Levels
High Efficiency Operation: Up to 94%
Ultra Low Dropout Voltage
Very Low Shutdown Current: 1µA
Wide Input Voltage Range: 2.7V to 5.5V
Tiny 10-pin 3x3 DFN package
Pricing and Availability
The SP6686 is available now starting at $1.59 in 1,000 piece quantities. Samples and evaluation boards are also available. Datasheets and additional information on the SP6686 can be found here.
About Sipex Power Management Products
Power management ICs deliver key benefits to portable power and distributed power applications, providing better power efficiency, increased miniaturization and more power at lower voltage levels. This product group includes low dropout linear regulators, DC to DC switching regulators, LED drivers, PWM controllers, charge pumps and microprocessor supervisors. Applications for the Sipex power products include personal computers and peripherals, battery powered hand-held devices such as PDAs and cellular telephones, and data communications products.
About Sipex
Sipex Corporation is a semiconductor company that designs, manufactures and markets high performance, value-added analog integrated circuits (ICs). Sipex serves the broad analog signal processing market with interface, power management and optical storage ICs for use in automotive, portable products, computing, communications, and networking infrastructure markets. The company is headquartered in Milpitas, CA with additional offices in Belgium, Canada, China, Germany, Japan, Taiwan and the UK. Sipex sells products direct and through its distribution channels. For more information about Sipex, visit www.sipex.com.
For Further Information Contact:
Sharon Guerrand
Phone: (408) 934-7500
Fax: (408) 935-7600
