Datasheet > ISL6531CB

ISL6531CB

更新时间： 2024-11-29 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		开关光电二极管动态存储器双倍数据速率控制器
页数	文件大小	规格书
17页	459K
描述
Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

ISL6531CB 数据手册

ISL6531

Data Sheet

August 11, 2005

FN9053.2

Dual 5V Synchronous Buck Pulse-Width

Modulator (PWM) Controller for DDRAM

Features

• Provides V

channel DDRAM memory systems

, V

, and V voltages for one- and two-

DDQ REF

Memory V

and V Termination

DDQ

The ISL6531 provides complete control and protection for

dual DC-DC converters optimized for high-performance

DDRAM memory applications. It is designed to drive low

cost N-channel MOSFETs in synchronous-rectified buck

• Excellent voltage regulation

- V

= 2.5V ±2% over full operating range

DDQ

±1% over full operating range

⋅ V

REF

DDQ

- V = V

± 30mV

REF

topology to efficiently generate 2.5V V

for powering

DDQ

for DDRAM differential signalling,

• Supports ‘S3’ sleep mode

DDRAM memory, V

REF

and V for signal termination. The ISL6531 integrates all of

- V is held at

via a low power window

DDQ

⋅ V

regulator to minimize wake-up time

the control, output adjustment, monitoring and protection

functions into a single package.

• Fast transient response

- Full 0% to 100% duty ratio

The V

DDQ

output of the converter is maintained at 2.5V

through an integrated precision voltage reference. The V

output is precisely regulated to 1/2 the memory power

supply, with a maximum tolerance of ±1% over temperature

REF

• Operates from +5V Input

• V regulator internally compensated

and line voltage variations. V accurately tracks V

• Overcurrent fault monitor on VDD

TT REF

During V2_SD sleep mode, the V output is maintained by

a low power window regulator.

- Does not require extra current sensing element

- Uses MOSFET’s r

DS(ON)

The ISL6531 provides simple, single feedback loop, voltage-

• Drives inexpensive N-Channel MOSFETs

mode control with fast transient response for the V

DDQ

• Small converter size

regulator. The V regulator features internal compensation

- 300kHz fixed frequency oscillator

that eases the design. It includes two phase-locked 300kHz

triangle-wave oscillators which are displaced 90 to minimize

• 24 Lead, SOIC or 32 Lead, 5mm×5mm QFN

interference between the two PWM regulators. The

regulators feature error amplifiers with a 15MHz gain-

bandwidth product and 6V/µs slew rate which enables high

converter bandwidth for fast transient performance. The

resulting PWM duty ratio ranges from 0% to 100%.

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• V

, V , and VREF regulation for DDRAM memory

DDQ TT

systems

The ISL6531 protects against overcurrent conditions by

inhibiting PWM operation. The ISL6531 monitors the current

- Main memory in AMD® Athlon™ and K8™, Pentium®

III, Pentium IV, Transmeta, PowerPC™, AlphaPC™, and

UltraSparc® based computer systems

in the V

regulator by using the r

of the upper

DDQ

DS(ON)

MOSFET which eliminates the need for a current sensing

resistor.

• High-power tracking DC-DC regulators

Ordering Information

TEMP

PART NUMBER RANGE( C)

PACKAGE

PKG. DWG. #

M24.3

ISL6531CB

0 to 70

24 Lead SOIC

ISL6531CBZ

(See Note)

24 Lead SOIC

(Pb-free)

M24.3

ISL6531CR

0 to 70

32 Lead 5x5 QFN L32.5x5

ISL6530/31EVAL1 Evaluation Board

Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal 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 1-888-468-3774 | 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...17

中文翻译

下载PDF

ISL6531CB 替代型号

型号	品牌	替代类型	描述	数据表
ISL6531CBZ-T	INTERSIL	完全替代	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and

与ISL6531CB相关器件

型号	品牌	获取价格	描述	数据表
ISL6531CB-T	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6531CBZ	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6531CBZ-T	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6531CR	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6531CR-T	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6531EVAL1	INTERSIL	获取价格	Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and
ISL6532	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532A	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532ACR	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532ACR-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems

与ISL6531CB相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

52
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

41
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

69
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

65

产品中心

服务支持

精选活动

关于我们

帮助中心

ISL6531CB

ISL6531CB 数据手册

ISL6531CB 替代型号

与ISL6531CB相关器件

与ISL6531CB相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

ISL6531CB

ISL6531CB 数据手册

ISL6531CB 替代型号

与ISL6531CB相关器件

与ISL6531CB相关文章

您还可以找

您在本页遇到什么问题？