LM27262MTDX Datasheet PDF - National

●General Description

●The LM27262 is a versatile synchronous buck voltage regulator controller designed according to the Intel VRD10 Specification. It’s a fixed-frequency voltage-mode control PWM with average current modulation of the reference voltage to achieve the desired output impedance.

●Features

●Compatible with “VRD10 Voltage Regulation Specification” for Intel Pentium 4 and Prescott Processors

●Supports Intel SpeedStep™technology (Geyserville-III™), which enables real-time dynamic switching of the CPU core voltage and the CPU clock frequency

●Uses external gate drivers (LM2724) for maximum ayout flexibility and noise immunity

●Fixed frequency PWM architecture

●Pin selectable internal or external voltage reference

●0.5% core voltage set-point accuracy when using external voltage reference

●0.9% accurate internal bandgap reference

●2-, 3- or 4-phase operation

●Out-of-phase switching reduces input ripple current, thereby minimizing input capacitor requirements

●VID-code programmable output voltage range of 0.8375V through 1.6000V