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电子发烧友网>电子资料下载>IC datasheet pdf>MAX8680 pdf datasheet (Smalles

MAX8680 pdf datasheet (Smalles

2008-10-27 | rar | 555 | 次下载 | 5积分

资料介绍

The MAX8680 highly efficient complete power-supply solution is designed for digital still cameras (DSCs) and digital video cameras (DVCs). The device integrates seven on-chip power MOSFET DC-DC converters with up to 95% efficiency to power all critical power supplies in DSC systems. Each converter also features True Shutdown™, as well as internal compensation to minimize external component count. The seven DC-DC converter outputs are:

  • Step-up synchronous-rectified DC-DC converter (SU). The MAX8680 is bootstrapped from VSU.
  • MAIN synchronous-rectified step-down DC-DC converter (M) for DSP I/O supply voltage.
  • DDRZ synchronous-rectified step-down DC-DC converter (Z) for DSP DDR supply voltage.
  • Low-voltage (down to 1V) synchronous-rectified step-down DC-DC converter (SD) for DSP core supply voltage.
  • High-voltage, step-up DC-DC converter with current regulation and PWM dimming control (LEDBST) for white LEDs (WLED).
  • High-voltage step-up DC-DC converter (CCDBST) for CCD imagers or positive LCD bias supplies.
  • Transformerless inverting DC-DC converter (CCDINV) for CCD imagers or negative LCD bias supplies.

    The MAX8680 has an independent/simultaneous power-on sequence of the CCDBST and CCDINV converters. For a preset power-on sequence of CCDBST before CCDINV, contact the factory.

    The MAX8680 operates with 1-cell lithium-ion (Li+) battery, two-AA cell, or dual-battery designs and is available in a 5mm x 5mm, 40-pin thin QFN package. The MAX8680 operates over the -40°C to +85°C extended temperature range.
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