MAX8680

• 95% Efficient Synchronous-Rectified DC-DC Converters
• 90% Efficient Buck-Boost Operation
• 85% Efficient DC-DC Converters for CCD, LCD, WLED, and/or OLED
• Internal Compensation on All Channels
• True Shutdown on All Step-Up Converters
• Overload Protection
• Soft-Start for Controlled Startup Current
• Dropout Operation (100% Duty Cycle) on All Step-Down Converters
• Regulated Current Output for Up to 6 White LEDs
• PWM Dimming of WLED Current
• Adjustable LED Overvoltage Protection Up to 27V
• Transformerless Inverter for CCD
• 2MHz Switching Frequency for Low-Voltage Channels
• 1µA Shutdown Supply Current
• Power-On Voltage Tracking for Core and Main Outputs
• All Internal Power MOSFETs
• Active-Low SDOK Power-OK Indicator
• 40-Pin, 5mm x 5mm x 0.8mm Thin QFN Package
• Fully Assembled and Tested

The MAX8680 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that evaluates the MAX8680 power-management IC. The MAX8680 accepts an input from 2.7V to 5.5V and provides a complete power-supply solution for digital still cameras (DSCs) and digital video cameras (DVCs). It integrates seven on-chip power MOSFET DC-DC converters, with up to 95% efficiency to power all critical power supplies in DSC systems. All step-up converters also feature True Shutdown™, as well as internal compensation, to minimize external component count.

Applications

• DSCs and DVCs
• GPS Navigation Systems
• PDAs and Portable Media Players