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ADP3158 PDF预览

ADP3158

更新时间: 2024-01-05 05:18:25
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
16页 191K
描述
4-Bit Programmable Synchronous Buck Controllers

ADP3158 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP16,.25
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.21模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:CONSTANT OFF TIME
最大输入电压:14 V最小输入电压:6.25 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e0长度:9.9 mm
湿度敏感等级:1功能数量:1
端子数量:16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:SOP封装等效代码:SOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):240认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn85Pb15)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3.9 mmBase Number Matches:1

ADP3158 数据手册

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4-Bit Programmable  
Synchronous Buck Controllers  
a
ADP3158/ADP3178  
FEATURES  
FUNCTIO NAL BLO CK D IAGRAM  
Optimally Compensated Active Voltage Positioning  
with Gain and Offset Adjustment (ADOPT™) for  
Superior Load Transient Response  
Complies with VRM Specifications with Lowest  
System Cost  
VCC  
CT  
ADP3158/ADP3178  
UVLO  
& BIAS  
DRVH  
OSCILLATOR  
PWM  
DRIVE  
4-Bit Digitally Programmable 1.3 V to 2.05 V Output  
N-Channel Synchronous Buck Driver  
DRVL  
GND  
Total Accuracy 0.8% Over Temperature  
Two On-Board Linear Regulator Controllers Designed  
to Meet System Power Sequencing Requirements  
High Efficiency Current-Mode Operation  
Short Circuit Protection for Switching Regulator  
Overvoltage Protection Crowbar Protects Micro-  
processors with No Additional External Components  
REF  
REFERENCE  
DAC+20%  
V
LR1  
CS–  
CS+  
LRFB1  
CMP  
– +  
LRDRV1  
V
LR2  
APPLICATIONS  
LRFB2  
Core Supply Voltage Generation for:  
g
m
Intel Pentium® III  
LRDRV2  
COMP  
Intel Celeron™  
REF  
VID DAC  
VID3  
VID2  
VID1  
VID0  
GENERAL D ESCRIP TIO N  
standard current-mode architectures, active voltage positioning  
adjusts the output voltage as a function of the load current so it  
is always optimally positioned for a system transient. T hey also  
provide accurate and reliable short circuit protection and  
adjustable current limiting. T he devices include an integrated  
overvoltage crowbar function to protect the microprocessor  
from destruction in case the core supply exceeds the nominal  
programmed voltage by more than 20%.  
T he ADP3158 and ADP3178 are highly efficient synchronous  
buck switching regulator controllers optimized for converting a  
5 V main supply into the core supply voltage required by high-  
performance processors. These devices use an internal 4-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 2.05 V. T hey use a current mode, constant off-time archi-  
tecture to drive two N-channel MOSFETs at a programmable  
switching frequency that can be optimized for regulator size and  
efficiency.  
T he AD P3158 and AD P3178 contain two linear regulator  
controllers that are designed to drive external N -channel  
M OSFET s. T he outputs are internally fixed at 2.5 V and 1.8 V  
in the ADP3158, while the ADP3178 provides adjustable out-  
puts that are set using an external resistor divider. T hese  
linear regulators are used to generate the auxiliary voltages  
(AGP, GT L, etc.) required in most motherboard designs,  
and have been designed to provide a high bandwidth load-  
transient response.  
T he ADP3158 and ADP3178 also use a unique supplemental  
regulation technique called Analog Devices Optimal Positioning  
T echnology (ADOPT ) to enhance load transient performance.  
Active voltage positioning results in a dc/dc converter that  
meets the stringent output voltage specifications for high-  
performance processors, with the minimum number of output  
capacitors and smallest footprint. Unlike voltage-mode and  
T he ADP3158 and ADP3178 are specified over the commercial  
temperature range of 0°C to 70°C and are available in a 16-lead  
SOIC package.  
ADOPT is a trademark of Analog Devices, Inc.  
Pentium is a registered trademark of Intel Corporation.  
Celeron is a trademark of Intel Corporation.  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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  
www.analog.com  
© Analog Devices, Inc., 2001  

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