NCP5218中文资料2-in-1 Notebook DDR Power Controller数据手册ONSEMI规格书

描述 Description

The NCP5218 2-in-1 Notebook DDR Power Controller is specifically designed as a total power solution for notebook DDR memory system. This IC combines the efficiency of a PWM controller for the VDDQ supply with the simplicity of linear regulators for the VTT termination voltage and the buffered low noise reference. This IC contains a synchronous PWM buck controller for driving two external NFETs to form the DDR memory supply voltage (VDDQ). The DDR memory termination regulator output voltage (VTT) and the buffered VREF are internally set to track at the half of VDDQ. An internal power good voltage monitor tracks VDDQ output and notifies the user whether the VDDQ output is within target range. Protective features include soft-start circuitries, undervoltage monitoring of supply voltage, VDDQ overcurrent protection, VDDQ overvoltage and undervoltage protections, and thermal shutdown.

特性 Features

• Incorporates VDDQ, VTT Regulator, Buffered VREF
• VTT and VREF Track VDDQ/2
• Supports VDDQ Conversion Rails from 4.5 V to 24 V
• Integrated Power FETs with VTT Regulator Sourcing/Sinking 1.5 A DC and 2.4 A Peak Current
• Buffered Low Noise 15 mA VREF Output
• DDQ and VTT
• Overvoltage Protection and Undervoltage Protection for VDDQ
• Thermal Shutdown

应用 Application

DDR/DDR2 Memory Supply and Termination Voltage Active Termination Busses (SSTL-18, SSTL-2, SSTL-3)

简介

NCP5218属于集成电路（IC）的特殊用途稳压器。由ONSEMI制造生产的NCP5218特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。