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ADP3186

更新时间： 2024-01-17 20:53:11
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
24页 629K
描述
5-Bit Programmable 2-/3-/4-Phase Synchronous Buck Controller

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ADP3186 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：LEAD FREE, MO-153AE, TSSOP-28针数：28
Reach Compliance Code：unknown风险等级：5.67
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：14 V最小输入电压：6.4 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：9.7 mm
湿度敏感等级：NOT SPECIFIED功能数量：1
端子数量：28最高工作温度：85 °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）：260
座面最大高度：1.2 mm表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：4000 kHz
温度等级：OTHER端子面层：MATTE TIN
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：40
宽度：4.4 mmBase Number Matches：1

ADP3186 数据手册

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5-Bit Programmable 2-/3-/4-Phase  
Synchronous Buck Controller  
ADP3186  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
VCC  
28  
RAMPADJ RT  
14 13  
Selectable 2-, 3-, or 4-phase operation at up to 1 MHz  
per phase  
ADP3186  
1ꢀ worst-case differential sensing error over temperature  
Logic-level PWM outputs for interface to external high  
power drivers  
Active current balancing between all output phases  
Built-in power good/crowbar blanking supports on-the-fly  
VID code changes  
UVLO  
SHUTDOWN  
AND BIAS  
11  
EN  
OSCILLATOR  
SET  
EN  
27  
26  
CMP  
RESET  
PWM1  
PWM2  
19  
6
GND  
CMP  
RESET  
CROWBAR  
CURRENT  
BALANCING  
CIRCUIT  
2-/3-/4-PHASE  
DRIVER LOGIC  
CSREF  
2.1V  
25  
24  
CMP  
RESET  
PWM3  
PWM4  
5-bit digitally programmable 0.8 V to 1.55 V output  
Programmable short-circuit protection with programmable  
latch-off delay  
CMP  
RESET  
DAC + 300mV  
CSREF  
CROWBAR  
CURRENT  
LIMIT  
DAC – 300mV  
APPLICATIONS  
23  
22  
21  
20  
SW1  
SW2  
SW3  
SW4  
Desktop PC power supplies for  
AMD Opteron™ processors  
VRM modules  
10  
DELAY  
PWRGD  
ILIMIT  
15  
EN  
17  
16  
18  
CSSUM  
CSREF  
CURRENT  
LIMIT  
CIRCUIT  
GENERAL DESCRIPTION  
The ADP3186 is a highly efficient multiphase synchronous  
buck switching regulator controller optimized for converting a  
12 V main supply into the core supply voltage required by high  
performance AMD processors. It uses an internal 5-bit DAC to  
read a voltage identification (VID) code directly from the pro-  
cessor, which is used to set the output voltage between 0.8 V  
and 1.55 V. It uses a multimode PWM architecture to drive the  
logic-level outputs at a programmable switching frequency that  
can be optimized for VR size and efficiency. The phase relation-  
ship of the output signals can be programmed to provide 2-, 3-,  
or 4-phase operation, allowing the construction of up to four  
complementary buck switching stages.  
12  
DELAY  
COMP  
CSCOMP  
SOFT  
START  
8
FB  
9
PRECISION  
REFERENCE  
VID  
DAC  
7
1
2
3
4
5
FBRTN  
VID4  
VID3  
VID2  
VID1  
VID0  
Figure 1.  
The ADP3186 includes programmable no-load offset and slope  
functions to adjust the output voltage as a function of the load  
current, so that it is always optimally positioned for a system  
transient. The ADP3186 also provides accurate and reliable  
short-circuit protection, adjustable current limiting, and a power  
good output that accommodates on-the-fly output voltage  
changes requested by the CPU.  
The ADP3186 is specified over the commercial temperature  
range of 0°C to 85°C and is available in 28-lead TSSOP and  
QSOP packages.  
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 that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 
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