MAX17528GTJ+T

The MAX17528GTJ+ comprises 1-phase Quick-PWM step-down VID power-supply controllers for Intel notebook CPUs. The Quick-PWM control provides instantaneous response to fast-load current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors. The MAX17528GTJ+ is intended for two different notebook CPU/GPU core applications: either bucking down the battery directly to create the core voltage, or bucking down the +5V system supply. The single-stage conversion method allows this device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, 2-stage conversion (stepping down the +5V system supply instead of the battery) at higher switching frequency provides the minimum possible physical size. A slew-rate controller allows controlled transitions between VID codes. A thermistor-based temperature sensor provides programmable thermal protection. A current monitor provides an analog output current proportional to the processor load current. The MAX17528GTJ+ implements both the Intel IMVP-6.5 CPU core specifications (active-low CLKEN pullup to 3.3V), as well as the Intel GMCH graphics core specifications (active-low CLKEN = GND). The MAX17528GTJ+ is available in a 32-pin, 5mm x 5mm TQFN package.

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