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MAX8566

更新时间： 2024-11-29 14:57:43
品牌 Logo 应用领域
亚德诺 - ADI 开关调节器
页数 文件大小 规格书
20页 271K
描述
高效率、10A、PWM降压型调节器，内置开关

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MAX8566 数据手册

 浏览型号MAX8566的Datasheet PDF文件第2页浏览型号MAX8566的Datasheet PDF文件第3页浏览型号MAX8566的Datasheet PDF文件第4页浏览型号MAX8566的Datasheet PDF文件第5页浏览型号MAX8566的Datasheet PDF文件第6页浏览型号MAX8566的Datasheet PDF文件第7页 
19-3690; Rev 3; 3/11  
High-Efficiency, 10A, PWM  
Internal-Switch Step-Down Regulator  
MAX856  
General Description  
Features  
o Internal 8mΩ On-Resistance MOSFETs  
The MAX8566 high-efficiency switching regulator deliv-  
ers up to 10A load current at output voltages from 0.6V  
o 10A Output PWM Step-Down Regulator  
to (0.87 x V ). The IC operates from 2.3V to 3.6V input  
IN  
o
1% Output Accuracy over Load, Line, and  
supplies, making it ideal for point-of-load applications.  
The total output-voltage set error is less than 1ꢀ over  
load, line, and temperature.  
Temperature  
o Operates from 2.3V to 3.6V Input Supply  
o Adjustable Output from 0.6V to (0.87 x V )  
IN  
The MAX8566 operates in pulse-width-modulation  
(PWM) mode with a 250kHz to 2.4MHz switching fre-  
quency range that is programmable by an external  
resistor. The IC can be synchronized to an external  
clock in the same frequency range using the SYNC  
input. The high operating frequency minimizes the size  
o 250kHz to 2.4MHz Adjustable Frequency or SYNC  
Input  
o Allows All-Ceramic-Capacitor Design  
o SYNCOUT Drives 2nd Regulator 180° Out-of-Phase  
o Prebiased or Monotonic Soft-Start  
o Programmable Soft-Start Time  
of external components. Using low-R  
n-channel  
DS(ON)  
MOSFETs for both high- and low-side switches main-  
tains high efficiency at both heavy-load and high-  
switching frequencies.  
o Output Tracking or Sequencing  
o Sourcing and Sinking Output Current  
o Power-Good Output  
The MAX8566 employs a voltage-mode control archi-  
tecture with a high-bandwidth (> 10MHz) error amplifi-  
er. The voltage-mode control architecture makes  
switching frequencies greater than 1MHz possible,  
achieving all-ceramic-capacitor designs to minimize PC  
board space. The error amplifier works with Type 3  
compensation to fully utilize the bandwidth of the high-  
frequency switching to obtain fast transient response.  
Adjustable soft-start time provides flexibility to minimize  
input startup inrush current. An open-drain, power-  
good (PWRGD) signal goes high when the output  
reaches 90ꢀ of its regulation point.  
o 32-Lead TQFN Package  
o REFIN for DDR-Termination Application  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX8566ETJ+  
-40°C to +85°C  
32 TQFN-EP*  
+Denotes lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Typical Operating Circuit  
The MAX8566 provides a SYNCOUT output to synchro-  
nize a second MAX8566 or a second regulator switch-  
ing 180° out-of-phase with the first to reduce the input  
ripple current, which consequently reduces the input-  
capacitance requirements. The MAX8566 also pro-  
vides an external reference input (REFIN) for  
output-tracking applications.  
INPUT  
2.25V TO 3.6V  
REFIN FOR  
TRACKING  
REFIN  
SS  
PGND  
PGND  
PGND  
PGND  
LX  
SYSTEM  
ENABLE  
EN  
The MAX8566 is available in a 32-pin, 5mm x 5mm TQFN  
package. The MAX8566 and all the required external  
components fit into a footprint of less than 0.80in2.  
SYNC  
FREQ  
SYNCOUT  
GND  
FB  
SYNC INPUT  
MAX8566ETJ+  
PROGRAMMABLE  
FREQUENCY  
STEP-DOWN REGULATOR  
TQFN 5mm x 5mm  
L1  
SYNC OUTPUT 180°  
LX  
OUTPUT  
UP TO 10A  
330nH/10A  
LX  
Applications  
ASIC/CPU/DSP Core Voltages  
POL Power Supplies  
C5  
2 x 22µF  
6.3V  
LX  
MONOTONIC SS  
SELECTION  
POWER-GOOD  
OUTPUT  
DDR Power Supplies  
Base-Station Power Supplies  
Fiber Power Supplies  
Telecom Power Supplies  
COMPENSATION  
Network Power Supplies  
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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