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DC-to-DC Regulators Simplify Intermediate Power Bus and Point-of-load Power Designs

Mon, 03/15/2010 - 12:40pm

Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced the ADP2300 and ADP2301 dc-to-dc switching regulators, the most recent in their growing portfolio of integrated power management switching regulators. The new 20V 1.2A (amp) step-down, dc-to-dc switching regulators integrate a high-side MOSFET that delivers power conversion efficiencies greater than 90 percent. The new regulators also feature internal loop compensation, integrated soft-start circuitry and bootstrap diodes to enable high-density solutions for intermediate bus generation and point-of-load regulation. The highly integrated ADP2300 and ADP2301 are available in small TSOT packages.

These ADP2300 and ADP2301 also support a wide input voltage range from 3 V to 20 V to accommodate a diversity of point-of-load applications, including consumer electronics and industrial and communications infrastructure equipment. This output voltage is adjustable from 0.8 V to 90 percent of input voltage (VIN). The regulators’ current-mode, fixed-frequency PWM (pulse-width modulation) architecture provides excellent stability and transient response. Under light loads, the regulators automatically operate in PFM (pulse frequency modulation) to reduce light load losses. A precision enable pin allows the regulator to be turned on at a precise input voltage for sequencing of multiple devices. System reliability and protection are enhanced further through OCP (overcurrent protection), UVLO (undervoltage lockout) and TSD (thermal shutdown).

Key Features and Benefits

  • Frequency settings: ADP2300 (700 kHz) and ADP2301(1.4 MHz)
  • Input voltage supply range of 3 V to 20 V supports a diverse range of point-of-load applications
  • Internal compensation and soft start provides easy design
  • Small TSOT packages provide a high-density solution and ideal replacement for less efficient linear regulators
  • Automatic pulse frequency modulation improves efficiency under light loads
  • Precision-enable pin allows the regulator to be turned on at a precise input voltage

With a wide input voltage range up to 20 V, the ADP2300 and ADP2301 support a variety of signal-chain loads where circuits may include ADCs (analog to digital converters), DACs (digital-to-analog converters), precision amplifiers and other high-performance, submicron ICs such as DSPs (digital signal processors) and FPGAs (field programmable gate arrays). The fast transient response and ease-of-use make these switching regulators a good match for powering FPGAs and Analog Devices’ Blackfin® and SHARC® Processors. Analog Devices’ integrated power management switching regulators are also supported by the ADIsimPower™ design tool, which makes selecting components, simulating power supply performance and building evaluation circuits easy and fast.

Availability and Pricing

Product         Samples         Availability        

Output
Options
(A)

       

Temperature
Range

 

       

Price Each
Per 100,000

        Packaging

ADP2300

ADP2301

        Now         Now         1.2        

?40°C to
+125°C

        $1.01        

3mm × 3mm
TSOT-6L

                                                             

For more information on these products, visit http://www.analog.com/pr/ADP2300 and http://www.analog.com/pr/ADP2301. For more information on ADI’s integrated multi-function power portfolio, visit http://www.analog.com/pr/switching-regulators.

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 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 throughout the industry 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 for 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. http://www.analog.com

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