參數資料
型號： ISL6531CBZ-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination
中文描述： DUAL SWITCHING CONTROLLER, 325 kHz SWITCHING FREQ-MAX, PDSO24
封裝： ROHS COMPLIANT, PLASTIC, MS-013-AD, SOIC-24
文件頁數： 1/17頁
文件大?。?/td> 461K
代理商： ISL6531CBZ-T
1
ISL6531
Dual 5V Synchronous Buck Pulse-Width
Modulator (PWM) Controller for DDRAM
Memory V
DDQ
and V
TT
Termination
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
topology to efficiently generate 2.5V V
DDQ
for powering
DDRAM memory, V
REF
for DDRAM differential signalling,
and V
TT
for signal termination. The ISL6531 integrates all of
the control, output adjustment, monitoring and protection
functions into a single package.
The V
DDQ
output of the converter is maintained at 2.5V
through an integrated precision voltage reference. The V
REF
output is precisely regulated to 1/2 the memory power
supply, with a maximum tolerance of
±
1% over temperature
and line voltage variations. V
TT
accurately tracks V
REF
.
During V2_SD sleep mode, the V
TT
output is maintained by
a low power window regulator.
The ISL6531 provides simple, single feedback loop, voltage-
mode control with fast transient response for the V
DDQ
regulator. The V
TT
regulator features internal compensation
that eases the design. It includes two phase-locked 300kHz
triangle-wave oscillators which are displaced 90
o
to minimize
interference between the two PWM regulators. The
regulators feature error amplifiers with a 15MHz gain-
bandwidth product and 6V/
μ
s slew rate which enables high
converter bandwidth for fast transient performance. The
resulting PWM duty ratio ranges from 0% to 100%.
The ISL6531 protects against overcurrent conditions by
inhibiting PWM operation. The ISL6531 monitors the current
in the V
DDQ
regulator by using the r
DS(ON)
of the upper
MOSFET which eliminates the need for a current sensing
resistor.
Ordering Information
Features
Provides V
DDQ
, V
REF
, and V
TT
voltages for one- and two-
channel DDRAM memory systems
Excellent voltage regulation
- V
DDQ
= 2.5V
±
2% over full operating range
- V
REF
=
±
1% over full operating range
- V
TT
= V
REF
±
30mV
Supports ‘S3’ sleep mode
- V
TT
is held at
regulator to minimize wake-up time
via a low power window
Fast transient response
- Full 0% to 100% duty ratio
Operates from +5V Input
V
TT
regulator internally compensated
Overcurrent fault monitor on VDD
- Does not require extra current sensing element
- Uses MOSFET’s r
DS(ON)
Drives inexpensive N-Channel MOSFETs
Small converter size
- 300kHz fixed frequency oscillator
24 Lead, SOIC or 32 Lead, 5mm
×
5mm QFN
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
V
DDQ
, V
TT
, and VREF regulation for DDRAM memory
systems
- Main memory in AMD Athlon and K8, Pentium
III, Pentium IV, Transmeta, PowerPC, AlphaPC, and
UltraSparc based computer systems
High-power tracking DC-DC regulators
PART NUMBER
TEMP
RANGE(
o
C)
PACKAGE
PKG. DWG. #
ISL6531CB
0 to 70
24 Lead SOIC
M24.3
ISL6531CBZ
(See Note)
0 to 70
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.
1
2
--
V
DDQ
1
--
V
Data Sheet
August 11, 2005
FN9053.2
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.
Copyright Intersil Americas Inc. 2003, 2005. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
相關PDF資料
PDF描述
ISL6532A ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532ACR ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532ACR-T ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6532ACRZ PWM Control Circuit 16-SOIC 0 to 70
ISL6532ACRZ-T PWM Control Circuit 16-SSOP 0 to 70
相關代理商/技術參數
參數描述
ISL6531CR 功能描述:IC CONTROLLER INTEL 32QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR)
ISL6531CR-T 功能描述:IC CONTROLLER INTEL 32QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR)
ISL6531CRZ 功能描述:IC CONTROLLER INTEL 32QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR)
ISL6531CRZ-T 功能描述:IC CONTROLLER INTEL 32QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR)
ISL6531EVAL1 功能描述:EVALUATION BOARD 1 ISL6531 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*