Datasheet > ISL6548CRZA

ISL6548CRZA

更新时间： 2024-11-28 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器开关双倍数据速率控制器
页数	文件大小	规格书
15页	463K
描述
ACPI Regulator/Controller for Dual Channel DDR Memory Systems

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ISL6548CRZA 数据手册

ISL6548

Data Sheet

February 9, 2005

FN9188.1

ACPI Regulator/Controller for

Features

Dual Channel DDR Memory Systems

• Generates 4 Regulated Voltages

- Synchronous Buck PWM Controller for DDR V

- 3A Integrated Sink/Source Linear Regulator with

Accurate VDDQ/2 Divider Reference for DDR V

- LDO Regulator for GMCH Core

- Sink/Source LDO Regulator for CPU/GMCH V

Termination

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

DDQ

supply V

during S0/S1 and S3 states. During S0/S1

DDQ

state, a fully integrated sink-source regulator generates an

accurate (V /2) high current V voltage without the

DDQ

need for a negative supply. Two LDO controllers are also

integrated for the GMCH core voltage regulation and for the

GMCH/CPU V termination voltage regulation.

• ACPI compliant sleep state control

• Glitch-free Transitions During State Changes

• PWM Controller Drives Low Cost N-Channel MOSFETs

The switching PWM controller drives two N-Channel

MOSFETs in a synchronous-rectified buck converter

topology. The synchronous buck converter uses voltage-

mode 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.

• 250kHz Constant Frequency Operation

• Tight Output Voltage Regulation

- All Outputs: ±2% Over Temperature

• Fully-Adjustable Outputs with Wide Voltage Range: Down

to 0.8V supports DDR and DDR2 Specifications

• Simple Single-Loop Voltage-Mode PWM Control Design

• Fast PWM Converter Transient Response

• Under and Overvoltage Monitoring on All Outputs

• OCP on the Switching Regulator

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 V termination voltage is

within spec and operational.

• Integrated Thermal Shutdown Protection

• Pb-Free Available (RoHS Compliant)

Each output is monitored for undervoltage events. The

switching regulator also has overvoltage and overcurrent

protection. Thermal shutdown is integrated.

Applications

•

Single and Dual Channel DDR Memory Power Systems in

ACPI compliant PCs

Pinout

ISL6548 (6x6 QFN)

•

TOP VIEW

Graphics cards - GPU and memory supplies

• ASIC power supplies

• Embedded processor and I/O supplies

• DSP supplies

28 27 26 25 24 23 22

5VSBY

S3#

21 DRIVE4

Ordering Information

REFADJ4

DRIVE3

TEMP.

PKG.

PART NUMBER RANGE (°C)

PACKAGE

DWG. #

P12V

ISL6548CRZ

(Note)

0 to 70

28 Ld 6x6 QFN (Pb-free) L28.6x6

GND

18 FB3

DDR_VTT

VDDQ

FB4

ISL6548CRZ-T

(Note)

28 Ld 6x6 QFN

Tape and Reel (Pb-free)

L28.6x6

16 COMP

15 FB

ISL6548CRZ A

(Note)

28 Ld 6x6 QFN (Pb-free) L28.6x6

ISL6548CRZA-T

(Note)

28 Ld 6x6 QFN

Tape and Reel (Pb-free)

L28.6x6

11 12 13 14

NOTE: Intersil Pb-free products employ special Pb-free material sets; molding

compounds/die attach materials and 100% matte tin plate termination finish, which are

RoHS compliant and compatible with both SnPb and Pb-free soldering operations.

Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...15

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与ISL6548CRZA相关器件

型号	品牌	获取价格	描述	数据表
ISL6548CRZA-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZ-T	RENESAS	获取价格	DUAL SWITCHING CONTROLLER, 280kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, MO-220-VJJC, LEAD
ISL6548CRZ-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6549	INTERSIL	获取价格	Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Con
ISL6549CA	INTERSIL	获取价格	Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Con
ISL6549CA	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16, 0.150 INCH, PLASTIC, QSOP-16
ISL6549CA-T	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16, 0.150 INCH, PLASTIC, QSOP-16
ISL6549CAZ	INTERSIL	获取价格	Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Con
ISL6549CAZA	INTERSIL	获取价格	Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Con
ISL6549CAZA-T	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16, 0.150 INCH, ROHS COMPLIANT, PLAS

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