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Freescale lightens the load for portable devices with small, ultra-energy-efficient analog buck regulator

Z-mode architecture enables highly efficient power conversion for long battery life and standby time

AUSTIN, Texas – May 27, 2008 – To help portable design engineers bring power-efficient, small-form-factor products to market, Freescale Semiconductor has added the MC34726/27 DC/DC buck regulators to its analog portfolio optimized for space-constrained battery-powered applications.

Manufactured with Freescale's SMARTMOS™ technology, the MC34726/27 devices are designed to enhance efficiencies at light loads and to improve standby time in mobile applications where Li-Ion or Li-Polymer batteries are the main power source.

At light output loads in standard buck converters, most energy losses become switching losses. Using Freescale's Z-mode architecture during light output activities such as cell phone standby, the MC34726/27 buck regulators smoothly transition into a pulse skipping mode, reducing the switching frequency to improve power efficiency and provide long battery life. Z-mode architecture is engineered to improve ripple performance during light load currents, while maintaining a low quiescent current.

The ultra-small 2mm x 2mm x 0.65mm package and high operating frequency design of the MC34726/27 requires little board real estate and enables a small form factor design. The devices are intended for applications with tight board space requirements and single cell Li-ion-based applications, such as cell phones, PMP and MP3 players.

MC34726/27 features

  • Voltage mode control architecture with feed forward
  • 300mA or 600mA load current
  • 0.7% ripple at full load; 1% ripple at light load (Z-mode architecture)
  • 55 uA quiescent current during Z-mode
  • Factory preset output voltage range of 0.8V to 3.3V
  • Single input voltage rail between 2.7V and 5.5V
  • 2x2mm ultra-thin dual flat no-lead (UDFN); low profile 0.65mm package

Pricing and availability
MC34726/27 device samples are available now. Suggested resale pricing for the MC34726 in 10,000-piece quantities is $0.51 (USD), and the MC34727 in 10,000-piece quantities is $0.53 (USD).

For more information about the MC34726/27 buck regulators, visit www.freescale.com/files/pr/powermanagement.html.
 
About Freescale Semiconductor

Freescale Semiconductor is a global leader in the design and manufacture of embedded semiconductors for the automotive, consumer, industrial, networking and wireless markets. The privately held company is based in Austin, Texas, and has design, research and development, manufacturing or sales operations in more than 30 countries. Freescale is one of the world's largest semiconductor companies with 2007 sales of $5.7 billion (USD). www.freescale.com.

Media Contacts

Americas
Dale Weisman
Freescale Semiconductor
(512) 895-2795
dale.weisman@freescale.com

Emilie Harris
Lois Paul & Partners
(512) 638-5321
emilie_harris@lpp.com

Asia Pacific
Gloria Shiu
Freescale Semiconductor
(85-22) 666-8237
gloria.shiu@freescale.com

Europe, Middle East and Africa
Laurent Massicot
Freescale Semiconductor
(33-16) 935-7712
laurent.massicot@freescale.com

India
Sanjeeth Boloor
Freescale Semiconductor
(91-80) 4149-4685
sanjeeth.boloor@freescale.com

Japan
Masako Tanikawa
Freescale Semiconductor
(81-3) 5437-9128
Masako.tanikawa@freescale.com

Reader Inquiry Response:
Freescale Semiconductor
P.O. Box 17927
Denver, CO 80217 USA

Freescale and the Freescale logo are trademarks or registered trademarks of Freescale Semiconductor, Inc. in the U.S. and other countries. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2008.