ANALOG DEVICES’ LOW-VIN, LOW DROP-OUT REGULATORS DELIVER PRECISION POWER FOR CORE VOLTAGE RAILS

- Single-chip LDOs provide best-in-class drop-out voltages for increased point-of-load efficiency and heat-dissipating packaging for improved reliability in medical and industrial applications.

Norwood, MA (05/26/2009) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, is introducing a new family of low drop-out regulators (LDOs) optimized for low input voltage and output voltage operation where low-noise power is needed. Available in 800-mA, 1.2-A and 2-A load current ranges, the low-Vin, single-rail input ADP1740, ADP1741, ADP1752, ADP1753 and ADP1754 LDOs offer improved conversion efficiency and superior PSSR (power supply rejection ratio) to support today’s high-performance signal chains. In addition, the new devices offer reduced component count and improved thermal performance, all of which results in lower noise, higher reliability and smaller solutions for designers developing medical imaging equipment, servers, infrastructure, office automation and industrial applications.

“Circuit designers involved with medical and industrial applications require highly reliable, low-noise regulator blocks that provide cleaner bias rails with improve energy utilization. The new ADI LDOs were designed with these applications in mind,” said Walt Heinzer, Marketing Manager, Analog Devices. “These LDO products convert directly from 1.6-V to 3.6-V inputs while delivering -60 dB at 100 KHz PSRR and 160mV at2A drop-out performance. They provide the easiest way to ensure a high-resolution data acquisition system, or any other high-performance signal chain, meets its target specs.”

Power Savings and Easier Layout
While many traditional LDOs can only operate down to inputs of 2.5 V, or require a second power input to convert from less than 2.5 V, the ADP174x and ADP175x families operate on voltages as low as 1.6 V. This reduces the power wasted when converting from higher inputs, and makes PCB layout much easier. The devices also incorporate “enable” and “power good” pins that make system health monitoring easy in mission-critical applications, such as 24 x 7 servers and medical imaging equipment.

Improved Reliability
System reliability is another important design consideration, especially for medical and industrial applications. Insufficient thermal management often results in lower IC reliability. To address this, the ADP174x and ADP175x LDOs are housed in a 4 mm x 4 mm leadless frame chip-set package (LFCSP) with an exposed pad. The exposed EPAD conducts heat away from the LDO, improving thermal conduction to help avoid potential failures, while providing a small footprint.

Availability and Pricing
Samples of the ADP174x and ADP175x LDOs are available now in a 4 mm x 4 mm 16 lead LFCSP packaging. Pricing for the ADP1752/53 is $0.90, the ADP1754 is $0.95 and the ADP1740/41 is $1.20 in 1,000-unit quantities. The new devices are supported by Analog Devices’ ADIsimPower. For more information, visit www.analog.com/pr/ADP1740. For more information on ADI’s LDO products, visit http://www.analog.com/linear-regulators.

Product
Availability
Price Each Per 1,000
Packaging
ADP1740
Now
$1.20
4 mm x 4 mm 16 lead LFCSP
ADP1741
Now
$1.20
4 mm x 4 mm 16 lead LFCSP
ADP1752
Now
$0.90
4 mm x 4 mm 16 lead LFCSP
ADP1753
Now
$0.90
4 mm x 4 mm 16 lead LFCSP
ADP1754
Now
$0.95
4 mm x 4 mm 16 lead LFCSP

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 http://www.analog.com/power.

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. 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.

Editor's Contact Information:

Howard Wisniowski
781/937-1517

howard.wisniowski@analog.com

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