Buck Converter IC

    Jan. 6, 2005
    The SPI-8010A is a high-efficiency (94%), adjustable-output, 3-A buck converter IC, available in an HSOP16 package with enhanced thermal-dissipation capability.

    The package's special ground-potential slug enables connection to a widely available ground plane on a PCB for better thermal dissipation. The integrated N-Channel DMOSFET improves system efficiency, and 1-V internal reference voltage enables 1 V and above output-voltage conversion. The soft-start function minimizes input in-rush current to avoid voltage dip on the input-voltage rail, which interferes with other key peripheral-device performances, while the thermal and overcurrent protections enhance overall system-level reliability. The PWM frequency is 250 kHz.

    Allegro MicroSystems Inc.,
    115 Northeast Cutoff, Worcester, MA 01615,
    (508) 853-5000, allegromicro.com

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