8-Channel PMICs for Digital Camera Power Supplies

The MAX8610–MAX8613/MAX8611V are highly efficient complete power-supply solutions for digital still cameras (DSCs) and digital video cameras (DVCs). Seven internal-MOSFET DC-DC converters provide up to 95% efficiency and generate all critical power supplies in DSC systems. They also feature True Shutdown™, as well as internal compensation to minimize external component count. One additional converter operates with an external MOSFET for optimum design flexibility. In all, eight converter channels include:

* Synchronous-rectified step-up with True Shutdown.

* Two synchronous-rectified step-down (MAX8611/MAX8613/MAX8611V) or step-up (MAX8610/MAX8612) converters power DSC system, I/O, and AFE blocks.

* Low-VOUT (down to 1V), synchronous-rectified step-down to power a DSP core.

* High-output-voltage step-up for CCD bias.

* Transformerless inverter for negative CCD bias.

* High-output-voltage step-up for white LEDs, OLED display, or other output.

* Auxiliary DC-DC boost (MAX8611/MAX8610/MAX8611V) or inverting (MAX8612/MAX8613) controller.

The MAX8611/MAX8613/MAX8611V operate in 1-cell lithium-ion (Li+) and dual-battery (Li+ and 2 AA) designs. The MAX8610/MAX8612 operate in 2 AA designs.

* 95% Efficient Synchronous-Rectified DC-DCs

* 90% Efficient Boost-Buck Operation

* 85% Efficient DC-DCs for CCD, LCD, WLED, and/or OLED

* Auxiliary Power for Motors (MAX8610/MAX8611/MAX8611V)

* Internal Compensation

* True Shutdown Step-Up Converters

* Overload Protection

* Soft-Start for Controlled Startup Current

* Low-Dropout (100% Duty Cycle) Step-Downs

* Regulated Current for Up to 6 White LEDS

* Open-LED Overvoltage Protection

* Transformerless Inverting Converter for CCD

* Adjustable 1MHz to 2MHz Switching Frequency

* 3% Frequency Accuracy

* 1µA Shutdown Supply Current

* CCD Voltage Sequencing

* Voltage Tracking for Core and Logic (MAX8611/MAX8613/MAX8611V)

* Compact 48-Pin, 6mm x 6mm Thin QFN Package