NCP5214中文资料2-in-1 Notebook DDR Power Controller数据手册ONSEMI规格书

描述 Description

The NCP5214 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. The IC is packaged in DFN−22.

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
• <5.0 µA Current Consumption During Shutdown
• Soft-start Protection for VDDQ and VTT
• Overvoltage Protection and Undervoltage Protection for VDDQ
• Thermal Shutdown
• This is a Pb-Free Device

应用 Application

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

简介

NCP5214属于开发板套件编程器的评估板-DC/DC与AC/DC（离线）SMPS。由制造生产的NCP5214评估板 - DC/DC 与 AC/DC（离线）SMPS该系列产品提供了一种方便的方法，可对开关模式电源转换所用的器件（包括 DC-DC 和 AC-DC 型）进行性能或特性评估。“稳压器”（包含内部电源开关装置）和“控制器”（设计为控制外部电源开关）之类的器件均包括在内。