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ADPAnalog 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 × 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.

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