Buck Regulator has logic controlled output voltage selection.
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Press Release Summary:
Available in 2.4 x 2.5 mm DFN package, 400 mA SP6656 has bit programmable output voltage to dynamically adjust to power requirements of ASICs, DSPs, and microprocessors. Proprietary control loop, 20 µA light load quiescent current, and integrated 0.3 ohm synchronous switches provide efficiency across wide range of output currents. Featuring built-in 625 mA current limit and 140°C over temperature shutdown, unit suits space constrained portable applications.
Original Press Release:
Sipex Introduces Programmable Output Buck Regulator with 98% Efficiency
MILPITAS, Calif., Feb. 2 -- Sipex Corporation (NASDAQ:SIPX), a leading supplier of high performance, analog integrated circuits (ICs), today introduced the SP6656, a 400mA synchronous buck regulator with logic controlled output voltage selection. The bit programmable output voltage of the SP6656 allows it to dynamically adjust to the changing power requirements of today's ASICs, DSPs and microprocessors used in portable electronic equipment. Available in a 2.4mm x 2.5mm DFN package, the SP6656 is ideal for space constrained portable applications such as cell phones, PDAs, digital still cameras, MP3 players, wireless headsets, GPS systems, and palmtop computers.
Operation of the SP6656 is optimized for applications using either Li-Ion or three cell alkaline/NiCD/NiMH batteries as a power source. The SP6656's proprietary control loop, 20uA light load quiescent current and integrated 0.3ohm synchronous switches provide superior efficiency across a wide range of output currents, increasing battery life. As the input battery supply decreases towards the output voltage, the SP6656 uses a special control loop to seamlessly transition into 100% duty cycle mode with only 80uA quiescent current, further extending useful battery life. The SP6656 can be shutdown using the ENABLE pin, reducing power drawn to nanoamps and enabling longer standby times in portable electronics.
Other features include user programmable output voltage down to 1.0V, a built-in 625mA current limit, and 140 degrees C over temperature shutdown.
"The SP6656 was designed with the needs of portable products in mind. Using the SP6656, a designer can build a small, compact, low noise solution," said Kevin Plouse, senior vice president of marketing and business development at Sipex. "High efficiency over the entire load range improves both standby and operating time for portable equipment, increasing product value."
SP6656 Key Features (typical)
-- High efficiency: 98%
-- Guaranteed minimum 400mA output current
-- Input voltage range: 2.7V to 5.5V
-- Ultra-low 20uA quiescent current
-- 80uA light load quiescent current in dropout
-- 0.5uA shutdown current
-- Output voltage logic selection
-- Output adjustable down to 1.0V
-- 100% duty ratio low dropout operation
-- Offered in small 2.4 x 2.5mm DFN
-- Enable input
Pricing and Availability
The SP6656 is available now in standard and lead free options (SP6656ER/TR = standard; SP6656ER-L/TR = lead free) starting at $1.29 in 1,000 piece quantities. Samples and evaluation boards are also available. Datasheets and additional information on the SP6656 can be found on the Sipex web site at www.sipex.com.
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.
CONTACT:
Sharon Guerrand
Phone: 408-934-7500
Fax: 408-935-7600
