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ADP3154JRU

更新时间： 2024-01-14 10:12:48
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
12页 190K
描述
5-Bit Programmable Dual Power Supply Controller for Pentium III Processors

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ADP3154JRU 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP,针数：20
Reach Compliance Code：unknown风险等级：5.72
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION标称输入电压：5 V
JESD-30 代码：R-PDSO-G20JESD-609代码：e0
长度：6.5 mm湿度敏感等级：NOT SPECIFIED
功能数量：1端子数量：20
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：220认证状态：COMMERCIAL
座面最大高度：1.2 mm表面贴装：YES
切换器配置：PUSH-PULL温度等级：COMMERCIAL
端子面层：TIN LEAD端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：4.4 mm
Base Number Matches：1

ADP3154JRU 数据手册

 浏览型号ADP3154JRU的Datasheet PDF文件第2页浏览型号ADP3154JRU的Datasheet PDF文件第3页浏览型号ADP3154JRU的Datasheet PDF文件第4页浏览型号ADP3154JRU的Datasheet PDF文件第5页浏览型号ADP3154JRU的Datasheet PDF文件第6页浏览型号ADP3154JRU的Datasheet PDF文件第7页 
5-Bit Programmable Dual Power Supply  
®
a
Controller for Pentium III Processors  
ADP3154  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Active Voltage Positioning with Gain and Offset  
Adjustment  
AGND  
V
DRIVE1 DRIVE2 PGND  
SENSE+ SENSE–  
PWRGD  
CC  
Optimal Compensation for Superior Load Transient  
Response  
DELAY  
+15%  
NONOVERLAP  
VRM 8.2, VRM 8.3 and VRM 8.4 Compliant  
5-Bit Digitally Programmable 1.3 V to 3.5 V Output  
Dual N-Channel Synchronous Driver  
Onboard Linear Regulator Controller  
Total Output Accuracy ؎1% Over Temperature  
High Efficiency, Current-Mode Operation  
Short Circuit Protection  
Overvoltage Protection Crowbar Protects  
Microprocessors with No Additional External  
Components  
V
DRIVE  
REF  
SD  
2R  
CROWBAR  
OFF  
IN  
V
+5% V  
–5%  
REF  
REF  
CMPI  
V
T1  
S
Q
R
R
V
REF  
g
m
V
T2  
REFERENCE  
Power Good Output  
TSSOP-20 Package  
VLDO  
FB  
C
T
CMPT  
1.20V  
V
APPLICATIONS  
OFF-TIME  
CONTROL  
IN  
VID0  
VID1  
VID2  
VID3  
VID4  
SENSE–  
Desktop PC Power Supplies for:  
Pentium II and Pentium III Processor Families  
AMD-K6 Processors  
VRM Modules  
ADP3154  
GENERAL DESCRIPTION  
The ADP3154 is a highly efficient synchronous buck switching  
regulator controller optimized for converting the 5 V main sup-  
ply into the core supply voltage required by the Pentium III and  
other high performance processors. The ADP3154 uses an  
internal 5-bit DAC to read a voltage identification (VID) code  
directly from the processor, which is used to set the output  
voltage between 1.3 V and 3.5 V. The ADP3154 uses a current  
mode, constant off-time architecture to drive two external N-  
channel MOSFETs at a programmable switching frequency that  
can be optimized for size and efficiency. It also uses a unique  
supplemental regulation technique called active voltage position-  
ing to enhance load transient performance.  
DAC  
CMP  
The ADP3154 contains a linear regulator controller that is  
designed to drive an external N-channel MOSFET. This linear  
regulator is used to generate the auxiliary voltages (AGP, GTL,  
etc.) required in most motherboard designs, and has been de-  
signed to provide a high bandwidth load-transient response. A  
pair of external feedback resistors sets the linear regulator out-  
put voltage.  
V
+12V  
CC  
V
+5V  
IN  
Active voltage positioning results in a dc/dc converter that meets  
the stringent output voltage specifications for Pentium II and  
Pentium III processors, with the minimum number of output  
capacitors and smallest footprint. Unlike voltage-mode and  
standard current-mode architectures, active voltage positioning  
adjusts the output voltage as a function of the load current so  
that it is always optimally positioned for a system transient.  
C
+
IN  
22␮F  
1␮F  
R1  
V
CC  
SD  
DRIVE1  
VLDO  
L
V
RSENSE  
O
V
1.3V TO  
O2  
ADP3154  
3.5V  
35k⍀  
+
SENSE+  
1000␮F  
FB  
C
O
1nF  
20k⍀  
CMP  
SENSE–  
DRIVE2  
The ADP3154 provides accurate and reliable short circuit pro-  
tection and adjustable current limiting. It also includes an  
integrated overvoltage crowbar function to protect the micro-  
processor from destruction in case the core supply exceeds the  
nominal programmed voltage by more than 15%.  
R2  
CCOMP  
C
T
200pF  
AGND PGND  
VID0–VID4  
5-BIT CODE  
Pentium is a registered trademark of Intel Corporation.  
All other trademarks are the property of their respective holders.  
Figure 1. Typical Application  
REV. A  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
1234567...12

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