MAX8775

www.DataSheet4U.com 19-0670; Rev 0; 11/06 KIT ATION EVALU E L B AVAILA Dual and Combinable Graphics Core Controller for Notebook Computers General Description Features o Dual-Output, Fixed-Frequency, Current-Mode Control o Combinable Output for Higher Currents o Dynamic Output Voltages with Automatic Fault Blanking and Transition Control o True Out-of-Phase Operation o True Differential Current Sense for Accurate Current Limit and Current Balance o 4V to 26V Input Range o 100kHz to 600kHz Switching Frequency o 0.5V to 2.5V Adjustable Outputs o Internal Integrator for High Output Accuracy o Stable with Low-ESR Output Capacitors o Independent Selectable PWM and Skip-Mode Operation o Independent Power-Good Outputs o Soft-Start and Soft-Stop o 2.5V Precision Reference o < 1µA Typical Shutdown Current MAX8775 The MAX8775 is a dual, step-down, interleaved, fixedfrequency, switch-mode power-supply (SMPS) controller with synchronous rectification. It is intended for GPU cores and I/O power generation in battery-powered systems. Flexible configuration allows the MAX8775 to operate as two independent single-phase regulators, or as one high-current two-phase regulator. Configured in separate mode, the MAX8775 provides power to two dynamic voltage rails, one for the GPU core and the other for the I/O power rail. Configured in combined mode, the MAX8775 functions as a twophase, high-current, single-output GPU core regulator, powering the high-performance GPU engines used in gaming ma...