20-V STEP-DOWN DC-TO-DC NON-SYNCHRONOUS REGULATORS SIMPLIFY INTERMEDIATE POWER BUS AND POINT-OF-LOAD POWER DESIGNS

- ADI’s ADP2302 and ADP2303 switching regulators feature internal compensation to enable design engineers to reduce power system design complexity while generating power conversion efficiencies of greater than 90 percent.
New 20-V 2A and 3A step-down, dc-to-dc switching regulators

Norwood, MA (07/26/2010) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced the ADP2302 and ADP2303 dc-to-dc non-synchronous switching regulators, the most recent in its growing portfolio of integrated power management switching regulators. The new 20-V 2 A (ADP2302) and 3 A (ADP2303) 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 ADP2302 and ADP2303 are available in SOIC packages.

The ADP2302 and ADP2303 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. The output voltage is adjustable from 0.8 V to 80 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 (over-current protection), UVLO (under-voltage lockout) and TSD (thermal shutdown). The ADP2302 and ADP2303 are ideal replacements for less efficient linear regulators.

Key Features and Benefits

  • Input voltage supply range of 3 V to 20 V supports a diverse range of point-of-load applications
  • A power-good feature enables a simple and reliable start-up sequence
  • Internal compensation and soft start simplifies design
  • Automatic pulse frequency modulation improves efficiency under light loads
  • Precision-enable pin allows the regulator to be easily sequenced from other input/output supplies and turned on at a precise input voltage

Availability and Pricing

Product Samples Availability Output
Current
Junction
Temperature
Range
Price
Each
Per
1,000
Packaging
ADP2302 Now Now 2 A −40°C to
+125°C
$1.12 5mm × 6mm
8-lead SOIC
ADP2303 Now Now 3 A −40°C to
+125°C
$1.50 5mm x 6mm
8-lead SOIC

With a wide input voltage range up to 20 V, the ADP2302 and ADP2303 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.

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.

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Editor's Contact Information:

Howard Wisniowski
781/937-1517

howard.wisniowski@analog.com

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