- ADI’s ADP2108 step-down converter delivers a wide input range and 100-percent duty cycle operation to increase battery life for portable consumer, industrial, and medical electronic devices.

Norwood, MA (06/08/2009) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today expanded its family of miniature switching regulators with a new 3-MHz step-down dc-to-dc converter optimized for better energy efficiencies in battery-powered portable devices. Balancing low operating input voltage capability, low quiescent current, and small size, the 600-mA ADP2108 dc-to-dc converter offers designers more flexibility in meeting strict system power and PCB (printed circuit board) area budgets without increasing battery capacity, an important concern when designing for small, handheld devices, such as mobile handsets or portable inventory scanners, or rechargeable medical equipment.

Efficient power conversion is very important to extending usage-time for battery-powered devices. Like its 6 MHz ADP2121 sister device, the new 3 MHz ADP2108 dc-to-dc converter operates from an input voltage as low as 2.3 V to provide excellent conversion efficiency, transient response, and protection. This low operating voltage allows designers to fully use the available battery energy for 2.5-V and 3-V power loads before recharging, which can eliminate the requirement of a more expensive buck-boost regulator in some applications. During light load conditions, the ADP2108 switches to a low-quiescent power-save mode for additional battery life savings.

Space savings and heat management are also important design considerations for portable devices and modular POL (point-of-load) systems. The ADP2108 device requires only three tiny external 0603 size components, which when combined with greater than 93 percent conversion efficiency, enable designers to support a higher load in a smaller area. In addition, ADI offers the ADIsimPower™ voltage regulator design tool and other downloadable power management tools™ that facilitate the design of high-efficiency dc-to-dc conversion blocks with reduced risk.

The ADP2108 is available in two package type options. The 1 mm x 1.5 mm x 0.6 mm WLCSP (wafer-level chip scale package) provides an ultra-low profile size for portable devices, such as mobile handsets, with stringent board space limitations, particularly on the z-axis. The 3 mm x 3 mm x 1 mm TSOT-23 (thin small outline transistor) package offers easy assembly for printed circuit board designs.

Availability and Pricing
Samples of the ADP2108 step-down converter are available now in a 5-ball WLCSP package and a 5-lead TSOT-23 package. Pricing for the ADP2108 is $0.80 per unit in 1,000-unit quantities for both packages. For more information on the ADP2108, visit For more information on ADI’s portfolio of switching regulators, visit

ADI in Power Management
Analog Devices brings world-class signal-processing prowess to a portfolio of innovative power-management ICs that complement high-performance signal-processing functions in a wide range of portable and fixed-power applications in consumer electronics, medical equipment, industrial and instrumentation, and communications infrastructure. By supporting signal-chain design requirements, such as dynamic range, transient performance, and reliability, ADI helps customers solve complex power challenges easily and quickly, differentiate their products, and get to market faster. Learn more about ADI's power-management ICs at

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 100,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

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Editor's Contact Information:

Howard Wisniowski

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