Analog Devices Rolls Out 6-MHz ADP2121 Buck Regulator

Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, is introducing the industry’s smallest 500-mA buck regulator, the first of a family of high-frequency 6-MHz dc-to-dc regulators. The ADP2121 is available in a 1.3-mm × 0.9-mm wafer level chip scale package (WLCSP) with a razor-thin height of 0.6 mm. The device requires only two small capacitors and one small inductor, resulting in a 35-percent reduction in PCB area compared with current 3-MHz buck regulator solutions. Leveraging ADI’s more than 40 years of experience in analog design, the ADP2121 delivers exceptional efficiency and performance, providing system designers with a cost-effective, ultra-small power management solution for portable applications where board space and battery life are critical.

Analog Devices 6-MHz ADP2121 buck regulatorSuperior Transient Performance and Enhanced Efficiency
With its high-speed proprietary architecture, the ADP2121 buck regulator delivers superior transient performance even with very small 4.7-µF output capacitors.

“It can be a challenge to utilize new space-saving 0402 (0.04 in × 0.02 in) output capacitors for high-performance point-of-load dc-to-dc applications where the load can toggle between heavy and light operation,” said Arcadio Leon, marketing director for portable power products, Analog Devices. “The ADP2121 was designed specifically for these types of applications, offering excellent transient performance and overall accuracy even in these difficult conditions.”

The ADP2121 also features the lowest-in-class FET on resistance, which helps to maintain the peak efficiency above 90 percent. The device automatically transitions to a low quiescent current power-save mode during light load conditions, which is critical for extending the operating life of high-performance, battery-operated portable electronics.

The ADP2121 solution operates at input voltages ranging from 2.3 V to 5.5 V, meeting the requirements for single Li-Ion, Li-Ion polymer cell and multiple alkaline/NiMH cell applications. Fixed output voltage options are available at 1.8 V, 1.82 V, 1.85 V, and 1.875 V. The ADP2121 supports a wide range of space-constrained applications, such as camera modules, GPS modules, memory modules, or other modules used in ultra-thin smart phones, digital still cameras, portable disk drives and media players.

Availability and Pricing
Samples of the ADP2121 6-MHz buck regulator are available now in a 6-ball WLCSP. The ADP2121 is priced at $0.80 per unit in 1,000-unit quantities. For more information on the ADP2121, 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 solutions 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 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices’ common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.