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EL7564CM

更新时间： 2024-11-19 22:37:07
品牌 Logo 应用领域
ELANTEC 稳压器开关光电二极管
页数 文件大小 规格书
18页 1195K
描述
Monolithic 4 Amp DC:DC Step-down Regulator

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EL7564CM 数据手册

 浏览型号EL7564CM的Datasheet PDF文件第2页浏览型号EL7564CM的Datasheet PDF文件第3页浏览型号EL7564CM的Datasheet PDF文件第4页浏览型号EL7564CM的Datasheet PDF文件第5页浏览型号EL7564CM的Datasheet PDF文件第6页浏览型号EL7564CM的Datasheet PDF文件第7页 
EL7564C  
Monolithic 4 Amp DC:DC Step-down Regulator  
Features  
General Description  
• Integrated synchronous MOSFETs  
and current mode controller  
• 4A continuous output current  
• Up to 95% efficiency  
• 4.5V to 5.5V input voltage  
• Adjustable output from 1V to 3.8V  
• Cycle-by-cycle current limit  
• Precision reference  
• ±0.5% load and line regulation  
• Adjustable switching frequency to  
1MHz  
• Oscillator synchronization  
possible  
The EL7564C is an integrated, full-featured synchronous step-down  
regulator with output voltage adjustable from 1.0V to 3.8V. It is capa-  
ble of delivering 4A continuous current at up to 95% efficiency. The  
EL7564C operates at a constant frequency pulse width modulation  
(PWM) mode, making external synchronization possible. Patented on-  
chip resistorless current sensing enables current mode control, which  
provides cycle-by-cycle current limiting, over-current protection, and  
excellent step load response. The EL7564C features power tracking,  
which makes the start-up sequencing of multiple converters possible.  
A junction temperature indicator conveniently monitors the silicon die  
temperature, saving the designer time on the tedious thermal charac-  
terization. The minimal external components and full functionality  
make this EL7564C ideal for desktop and portable applications.  
The EL7564C is specified for operation over the -40°C to +85°C tem-  
perature range.  
• Internal soft start  
• Over voltage protection  
• Junction temperature indicator  
• Over temperature protection  
• Under voltage lockout  
Typical Application Diagrams  
• Multiple supply start-up tracking  
• Power good indicator  
C5  
0.1µF  
• 20-pin SO (0.300”) package  
• 28-pin HTSSOP package  
1
2
3
4
5
6
7
8
9
VREF  
SGND  
COSC  
VDD  
EN 20  
FB 19  
C4  
Applications  
390pF  
PG 18  
• DSP, CPU Core and IO Supplies  
• Logic/Bus Supplies  
• Portable Equipment  
• DC:DC Converter Modules  
• GTL + Bus Power Supply  
R4  
C3  
22W  
VDRV 17  
VHI 16  
0.22µF  
C6  
D1  
C7  
VTJ  
0.22µF  
V
3.3V,  
4A  
OUT  
C2  
PGND  
PGND  
VIN  
LX 15  
L1  
2.2nF  
4.7µH  
LX 14  
V
5V  
C1  
330µF  
R2  
C10  
IN  
330µF 2.37k  
2.2nF  
Ordering Information  
PGND 13  
PGND 12  
PGND 11  
Tape &  
Reel  
STP  
Part No  
EL7564CM  
Package  
20-Pin SO  
Outline #  
MDP0027  
MDP0027  
MDP0048  
MDP0048  
MDP0048  
R1  
-
1kW  
10 STN  
EL7564CM-T13  
EL7564CRE  
20-Pin SO  
13”  
-
28-Pin HTSSOP  
28-Pin HTSSOP  
EL7564CM  
(20-Pin SO)  
EL7564CRE-T7  
7”  
EL7464CRE-T13 28-Pin HTSSOP  
13”  
Typical Application Diagrams continued on page 3  
Manufactured Under U.S. Patent No. 5,7323,974  
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these  
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.  
© 2001 Elantec Semiconductor, Inc.  
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