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MAX8655ETN+TW

更新时间： 2024-11-21 21:19:07
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
23页 373K
描述
Switching Regulator

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MAX8655ETN+TW 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.73模拟集成电路 - 其他类型：SWITCHING REGULATOR
峰值回流温度（摄氏度）：NOT SPECIFIED处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

MAX8655ETN+TW 数据手册

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19-3982; Rev 2; 10/10  
Highly Integrated, 25A, Wide-Input,  
Internal MOSFET, Step-Down Regulator  
MAX865  
General Description  
Features  
The MAX8655 synchronous-PWM buck regulator oper-  
ates from a 4.5V to 25V input and generates an output  
voltage adjustable from 0.7V to 5.5V at loads up to 25A.  
Integrated power MOSFETs provide a small footprint,  
ease of layout, and reduced EMI. Removing the board  
trace inductances ensures the highest efficiency at  
high frequency.  
o 25A Output Current  
o Integrated Power MOSFETs  
o Operates from 4.5V to 25V Supply  
o 1% FB Voltage Accuracy Over Temperature  
o Adjustable Output Voltage Down to 0.7V  
o Adjustable Switching Frequency and External  
The MAX8655 uses peak current-mode control architec-  
ture with an adjustable (200kHz to 1MHz), constant-  
switching frequency, which is externally synchronizable.  
The MAX8655’s adjustable current limit uses the induc-  
tor’s DC resistance to improve efficiency or an external  
sense resistor for higher accuracy. Foldback type cur-  
rent limit is available to reduce the power dissipation  
under severe-overload or short-circuit conditions. A ref-  
erence input is provided for use with a high-accuracy  
external reference or for DDR and tracking applications.  
Synchronization from 200kHz to 1MHz  
o 180° Phase-Shifted Synchronization  
o Adjustable Overcurrent Limit  
o Adjustable Slope Compensation  
o Selectable Current-Limit Mode: Latch-Off or  
Automatic Recovery  
o Monotonic Output Voltage Rise at Startup into  
Prebias Output  
Monotonic startup provides safe starting into a prebi-  
ased output, where traditional step-down regulators  
discharge the output capacitor during soft-start, creat-  
ing a negative voltage at the output and possibly dam-  
aging the load.  
o Output Sources and Sinks Current for DDR  
Applications  
o Enable Input  
o Power-OK (POK) Output  
o Adjustable Soft-Start  
A 180° out-of-phase synchronization output is available  
for synchronizing with another MAX8655.  
o Independently Adjustable Overvoltage Protection  
An enable input is provided for on/off control and to  
facilitate output sequencing. Output-voltage sensing for  
programmable overvoltage protection is provided and  
is independent of the feedback network to further  
enhance the output overvoltage protection.  
Typical Operating Circuit  
Overall, the MAX8655 provides enough flexibility for the  
experienced user, as well as simplicity and ease of use  
for non-power-supply engineers.  
Applications  
POWER-OK OUTPUT  
Point-of-Load Power Supplies  
Telecom Power  
Networking  
CS-  
CS+  
POK  
FSYNC  
FSYNC INPUT  
SYNC OUTPUT  
PVIN  
Nonisolated DC-DC Power Modules  
Servers and Workstations  
Notebook Computers  
IBA Power Supplies  
IN  
MAX8655  
SYNCO  
VL  
ON  
OFF  
ENABLE INPUT  
VL  
EN  
VLGND  
LX  
BST  
OUTPUT  
0.7V TO 5.5V  
UP TO 25A  
Ordering Information  
LXB  
INPUT 7V  
TO 28V  
PVIN  
TEMP  
RANGE  
PART  
PIN-PACKAGE  
56 TQFN-EP*  
(8mm x 8mm)  
AVL  
MAX8655ETN+  
-40°C to +85°C  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Pin Configuration appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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