Overview

Features and Benefits

  • 4V to 14V Input Voltage Range
  • Internal MOSFET H-Bridge Converters for Up to 94% Efficiency
  • Minimal Output Ripple Variation on H-Bridge Converters
  • No Mode Transition Glitches on Proprietary H-Bridge
  • Internal Compensation on Channels 1–5
  • Fast Line-Transient and Load-Transient Response
  • True Shutdown on All Converters
  • Internal Soft-Start and Short-Circuit Protection on All Outputs
  • Individual ON/OFF Control
  • Fault Blanking
  • ±2% Regulated LED Current for Six White LEDs
  • 2% Switching Frequency Accuracy
  • 3µA Shutdown Current
  • Small, 48-Pin 6mm x 6mm TQFN Package

Product Details

The MAX8682 power-management IC (PMIC) provides a compact and complete power-supply solution for Digital Single-Lens Reflex (DSLR) cameras. Six DC-DC converters with internal switches provide up to 94% efficiency to generate the critical power-supply voltages required in DSLR camera systems. The two H-bridge and three step-down DC-DC converters are internally compensated and switch only as necessary at light loads to optimize efficiency. The H-bridge channels utilize Maxim’s proprietary H-bridge topology, providing a seamless transition through all operating modes without the glitches commonly seen in competing H-bridge converters.

All six converters offer True Shutdown™ short-circuit protection, and overload protection. To prevent current runaway in the event of a hard short, channels 1 and 2 latch off immediately if the output voltage drops below 1.25V anytime after startup. The white LED step-up converter provides regulated current and dimming control. If a short-circuit condition is detected on the output capacitor of the white LED converter, only this converter turns off. If a short or overload condition is detected on any other output for at least 66ms, the PMIC turns off all converters.

Applications

  • 2-Cell Li+ DVC
  • Digital SLR Cameras
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Documentation & Resources

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  • Reliability Data (1)
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    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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