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| 型号： | ISL6548CRZA-T |
| 厂商： | Intersil |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG/CTRLR ACPI DUAL DDR 28QFN |
| 标准包装： | 4,000 |
| 应用： | 存储器，DDR/DDR2 稳压器 |
| 电流 - 电源： | 7mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（6x6） |
| 包装： | 带卷 (TR) |
?
ISL6548
Data Sheet
January 3, 2006
FN9188.2
ACPI Regulator/Controller for
Dual Channel DDR Memory Systems
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 V DDQ during S0/S1 and S3 states. During S0/S1
state, a fully integrated sink-source regulator generates an
accurate (V DDQ /2) high current V TT 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 V TT termination voltage regulation.
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/CPU V TT 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.
Features
? Generates 4 Regulated Voltages
- Synchronous Buck PWM Controller for DDR V DDQ
- 3A Integrated Sink/Source Linear Regulator with
Accurate VDDQ/2 Divider Reference for DDR V TT
- LDO Regulator for GMCH Core
- Sink/Source LDO Regulator for CPU/GMCH V TT
Termination
? ACPI Compliant Sleep State Control
? Glitch-free Transitions During State Changes
? PWM Controller Drives Low Cost N-Channel MOSFETs
? 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
? Integrated Thermal Shutdown Protection
? Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Pinout
ISL6548 (6x6 QFN)
TOP VIEW
? 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
28
27
26
25
24
23
22
? DSP Supplies
5VSBY
S3#
1
2
21 DRIVE4
20 REFADJ4
Ordering Information
TEMP.
P12V
GND
DDR_VTT
DDR_VTT
3
4
5
6
GND
29
19 DRIVE3
18 FB3
17 FB4
16 COMP
PART
PART NUMBER MARKING
ISL6548CRZA ISL6548CRZ
(Note)
ISL6548CRZA-T ISL6548CRZ
(Note)
RANGE
(°C)
0 to 70
0 to 70
PKG.
PACKAGE DWG. #
28 Ld 6x6 QFN L28.6x6
(Pb-free)
28 Ld 6x6 QFN L28.6x6
Tape and Reel
VDDQ
7
15 FB
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
8
9
10
11
12
13
14
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
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. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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| ISL6549CA | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6549CA-T | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6549CAZA | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6549CAZAS2698 | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6549CAZA-T | 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
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