首页 > Intersil 英特矽尔 > 电源管理器件 > 开关稳压器

ISL6548 ACPI Regulator/Controller for Dual Channel DDR Memory Systems

VIN (min) (V) 4.5
VIN (max) (V) 5.5
VOUT (min) (V) 0.8
VOUT (max) (V) VIN
IOUT (max) (A) 25

The ISL6548 provides a complete ACPI compliant power solution for up to 4 DIMM dual channel DDR/DDR2 Memory systems. Included are both a synchronous buck controller to supply VDDQ during S0/S1 and S3 states. During S0/S1 state, a fully integrated sink-source regulator generates an accurate (VDDQ/2) high current VTT voltage without the need for a negative supply. Two LDO controllers are also integrated for the GMCH core voltage regulation and for the GMCH/CPU VTT termination voltage regulation.

The switching PWM controller drives two N-Channel MOSFETs in a synchronous-rectified buck converter topology. The synchronous buck converter uses voltagemode control with fast transient response. The switching regulator provides a maximum static regulation tolerance of ±2% over line, load, and temperature ranges. The output is user-adjustable by means of external resistors down to 0.8V.

An integrated soft-start feature brings all outputs into regulation in a controlled manner when returning to S0/S1 state from any sleep state. During S0 the VIDPGD signal indicates that the GMCH/CPU VTT termination voltage is within spec and operational.

Each output is monitored for undervoltage events. The switching regulator also has overvoltage and overcurrent protection. Thermal shutdown is integrated.

ISL6548 特点
ISL6548 应用
ISL6548 芯片订购指南
芯片型号 产品状态 温度范围 封装尺寸图 潮湿敏感度等级MSL 美元价格US $
ISL6548CRZA 量产 民用级 28 Ld QFN 3 3.17
ISL6548CRZA-T 量产 民用级 28 Ld QFN T+R 3 3.17
ISL6548CRZ 停产 民用级 28 Ld QFN 3 N/A
ISL6548CRZ-T 停产 民用级 28 Ld QFN T+R 3 N/A
ISL6548 应用技术支持与电子电路设计开发资源下载
  1. ISL6548 数据资料 datatSheet 下载.PDF
  2. Power 电源管理器件产品选型指南 . pdf