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EL7558BCM-T13 PDF预览

EL7558BCM-T13

更新时间： 2024-11-05 22:39:27
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11页 211K
描述
Integrated Adjustable 8 Amp Synchronous Switcher

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EL7558BCM-T13 数据手册

 浏览型号EL7558BCM-T13的Datasheet PDF文件第2页浏览型号EL7558BCM-T13的Datasheet PDF文件第3页浏览型号EL7558BCM-T13的Datasheet PDF文件第4页浏览型号EL7558BCM-T13的Datasheet PDF文件第5页浏览型号EL7558BCM-T13的Datasheet PDF文件第6页浏览型号EL7558BCM-T13的Datasheet PDF文件第7页 
EL7558B  
®
April 27, 2001  
FN7293  
Integrated Adjustable 8 Amp  
Synchronous Switcher  
Features  
• EL7558/EL7558A pin-compatible  
The EL7558B is an adjustable  
synchronous DC:DC switching  
regulator optimized for a 5V input and  
• Improved temperature and voltage ranges  
• 8A continuous load current  
• Precision internal 1% reference  
• 1.0V to 3.8V output voltage  
• Internal power MOSFETs  
• >90% efficiency  
1.0V-3.8V output. By combining integrated NMOS power  
FETS with a HSOP package the EL7558B can supply up to  
8A continuous output current without the use of external  
power devices or externally attached heat sinks, thereby  
minimizing design effort and overall system cost.  
On-chip resistorless current sensing is used to achieve  
stable, highly efficient, current-mode control. The EL7558B  
also incorporates the VCC2DET function to directly interface  
with the Intel P54 and P55 microprocessors. Depending on  
the state of VCC2DET, the output voltage is internally preset  
to 3.50V or a user-adjustable voltage using two external  
resistors. In both internal and external feedback modes the  
active-high PWRGD output indicates when the regulator  
output is within 10% of the programmed voltage. An on-  
board sensor monitors die temperature (OT) for over-  
temperature conditions and can be connected directly to  
OUTEN to provide automatic thermal shutdown. Adjustable  
oscillator frequency and slope compensation allow added  
flexibility in overall system design.  
• Synchronous switching  
• Adjustable slope compensation  
• Over-temperature indicator  
• Pulse-by-pulse current limiting  
• Operates up to 1MHz  
• 1.5% typical output accuracy  
• Adjustable oscillator with sync  
• Remote enable/disable  
• Intel P54- and P55-compatible  
• VCC2DET interface  
The EL7558B is available in the 28-pin HSOP package and  
is specified for operation over the -40°C to +85°C  
temperature range.  
• Internal soft-start  
Applications  
• PC motherboards  
Pinout  
• Local high power CPU supplies  
• 5V to 1.0V DC:DC conversion  
• Portable electronics/instruments  
• P54 and P55 regulators  
• GTL+ Bus power supply  
EL7558B  
(28-PIN HSOP)  
TOP VIEW  
R4  
R3  
V
IN  
100Ω  
150Ω  
D3  
D2  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
FB1  
CREF  
FB2  
CP  
C4  
0.1µF  
C7  
C 5  
D4*  
(Optional)  
1µF  
R1  
20  
220pF  
3
CSLOPE C2V  
C8 330pF  
Ω
4
COSC  
VDD  
VSS  
VHI  
R5  
R6  
C11  
0.22µF  
D1  
Ordering Information  
5
5.1Ω  
C 6 39.2  
Ω
6
VIN  
LX  
TAPE &  
0.1µF  
7
VSSP  
VIN  
LX  
PART NUMBER  
EL7558BCM  
PACKAGE  
28-Pin HSOP  
28-Pin HSOP  
REEL  
PKG. NO.  
MDP0042  
MDP0042  
L1  
2.5µH  
C12  
1µF  
C9  
8
LX  
V
OUT  
V
IN  
C10  
1mF  
660µF  
9
VSSP  
VSSP  
VSSP  
LX  
-
C3  
10  
11  
12  
13  
14  
VSSP  
VSSP  
TEST  
1µF  
EL7558BCM-T13  
13”  
VSSP  
Connect to VSSP for  
external feedback  
VCC2DET  
PWRGD  
OUTEN  
OT  
C12 = 1µF  
C3, C4, C5, C6, C7 C8 - ceramic  
C5, C11 - ceramic or tantalum  
C9 - Sprague 293D337X96R3 2X330µF  
C10 - Sprague 293D337X96R3 3X330µF  
L1 - Pulse Engineering, PE-53681  
D1 - D4: BAT54S fast diode  
D4 Required for EL7558ACM only  
Manufactured under U.S. Patents No. 5,723,974 and No. 5,793,126  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.  
All other trademarks mentioned are the property of their respective owners.  
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EL7558BCM-T13 替代型号

型号 品牌 替代类型 描述 数据表
EL7558BCM ELANTEC

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