LM27262 Datasheet | Texas Instruments

OBSOLETE .ti. SNVS262C - MAY 2004 - REVISED SEPTEMBER 2011 LM27262 Intel CPU Core Voltage Regulator Controller for VRD10 patible PCs Check for Samples: LM27262 Features - 234 patible with “VRD10 Voltage Regulation Specification” for Intel Pentium 4 and Prescott Processors - Supports Intel Speed Step™ 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 Layout 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 - User Programmable, Low Loss, Load Line Slope - User Programmable Standard VID Offset - User Programmable VCORE Slew Rate - 5V Power Rail Under Voltage Lock Out (UVLO) - Over Voltage Protection (OVP), Under Voltage Protection (UVP), and Over Current Protection (OCP) to Defend Against Potentially Catastrophic Events - User Programmable Fault Latch That Can Be Used to Disable the Regulator in the Event a Power System Fault - Very Fast Transient Response - VID-Transition Masked PWRGOOD Output - True-Differential Current Sensing for Each Phase Ensures Accurate Load Current Sharing - User Programmable Cycle-by-Cycle Current Limit APPLICATIONS - Server and Desktop puter CPU Core Power Supplies Requiring a 2, 3- or 4-Phase Voltage Regulator Delivering up to...