www.
fairchildsemi.
com FAN5231 Precision Dual PWM Controller And Linear Regulator for Notebook CPUs Features • Provides 3 Regulated Voltages – Microprocessor core (SpeedStep™-enabled) – Microprocessor I/O – Microprocessor Clock Generator • High Efficiency Over Wide Load Range • Not Dissipative Current-Sense Scheme – Uses MOSFET’s R DS(ON) – Optional Current-Sense Resistor for Precision Overcurrent • Adaptive Dead Time Drivers for N-Channel MOSFETs • Operates from +5V, +3.
3V and Battery (5.
6-24V) Inputs • Precision Core Voltage Control: – Remote “Kelvin” Sensing – Summing Current-Mode Control – On-Chip Mode-Compensated “Droop” for Optimum Transient Response and Lower Processor Power Dissipatio...

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