MAX8775ETJ+

General Description
The MAX8775 is a dual, step-down, interleaved, fixed frequency, 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 two phase, high-current, single-output GPU core regulator, powering the high-performance GPU engines used in gaming machines and media center notebooks.
Features
♦ Dual-Output, Fixed-Frequency, Current-Mode Control
♦ Combinable Output for Higher Currents
♦ Dynamic Output Voltages with Automatic Fault Blanking and Transition Control
♦ True Out-of-Phase Operation
♦ True Differential Current Sense for Accurate Current Limit and Current Balance
♦ 4V to 26V Input Range
♦ 100kHz to 600kHz Switching Frequency
♦ 0.5V to 2.5V Adjustable Outputs
♦ Internal Integrator for High Output Accuracy
♦ Stable with Low-ESR Output Capacitors
♦ Independent Selectable PWM and Skip-Mode Operation
♦ Independent Power-Good Outputs
♦ Soft-Start and Soft-Stop
♦ 2.5V Precision Reference
♦ < 1µA Typical Shutdown CurrentApplications 2 to 4 Li+ Cells Battery-Powered Devices Media Center and Gaming Notebooks GPU and I/O Power Supplies Tracking Output Power Supplies