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参数资料
| 型号： | ISL6537ACR |
| 厂商： | INTERSIL CORP |
| 元件分类： | 稳压器 |
| 英文描述： | ACPI Regulator/Controller for Dual Channel DDR Memory Systems |
| 中文描述： | 3.3 A DUAL SWITCHING CONTROLLER, 280 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封装： | 6 X 6 MM, PLASTIC, MO-220VJJC, QFN-28 |
| 文件页数： | 1/16页 |
| 文件大小： | 408K |
| 代理商： | ISL6537ACR |
1
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. 2004, 2005, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6537A
ACPI Regulator/Controller for
Dual Channel DDR Memory Systems
The ISL6537A 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. A buffered version of the VDDQ/2 reference is
provided as VREF. A second PWM controller, which requires
external MOSFET drivers, is available for regulation of the
GMCH Core voltage. An LDO controller is also integrated for
the CPU VTT termination voltage regulation and the DAC.
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.
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 and CPU VTT termination voltage
is within spec and operational.
All outputs, except VDAC, have undervoltage protection.
The switching regulator also has overvoltage and
overcurrent protection. Thermal shutdown is integrated.
Pinout
ISL6537A (6X6 QFN)
TOP VIEW
Features
Generates 5 Regulated Voltages
- Synchronous Buck PWM Controller for DDR VDDQ
- 3A Integrated Sink/Source Linear Regulator with
Accurate VDDQ/2 Divider Reference for DDR VTT
- PWM Regulator for GMCH Core
- LDO Regulator for CPU/GMCH VTT Termination
- LDO Regulator for DAC
ACPI Compliant Sleep State Control
Glitch-Free Transitions During State Changes
Integrated VREF Buffer
VDDQ PWM Controller Drives Low Cost N-Channel
MOSFETs
250kHz Constant Frequency Operation
- Both PWM Controllers are Phase Shifted 180°
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
OCP on the VDDQ Switching Regulator
Integrated Thermal Shutdown Protection
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Single and Dual Channel DDR Memory Power Systems in
ACPI Compliant PCs
Graphics Cards - GPU and Memory Supplies
ASIC Power Supplies
Embedded Processor and I/O Supplies
DSP Supplies
5VSBY
S3#
P12V
GND
DDR_VTT
VDDQ
DRIVE3
FB3
PWM4
FB4
COMP4
COMP
FB
LG
A
T
E
GN
D
UGA
T
E
BOOT
PHA
S
E
S5
#
OC
SE
T
V
DDQ
DDR
_V
TTS
NS
DR
IVE
2
FB
2
VID
P
GD
VR
EF_
O
UT
VR
EF_IN
1
2
3
4
5
6
7
21
20
28
27
26
25
24
23
22
89
GND
29
19
18
17
16
15
10
11
12
13
14
Data Sheet
July 18, 2007
FN9143.5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6537ACRR5160 | 制造商:Intersil Corporation 功能描述: |
| ISL6537ACR-T | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537ACRZ | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537ACRZR5160 | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537ACRZ-T | 功能描述:IC REG/CTLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:热电冷却器 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.173"，4.40mm 宽）裸露焊盘 供应商设备封装:28-TSSOP 裸露焊盘 包装:管件 产品目录页面:1410 (CN2011-ZH PDF) |
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