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EL7556BC

更新时间： 2024-11-19 22:50:59
品牌 Logo 应用领域
ELANTEC 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管局域网
页数 文件大小 规格书
13页 322K
描述
Integrated Adjustable 6 Amp Synchronous Switcher

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中文翻译

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EL7556BC 技术参数

生命周期：Transferred包装说明：SO-28
Reach Compliance Code：unknown风险等级：5.73
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
标称输入电压：5 VJESD-30 代码：R-PDSO-G28
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：9 A封装主体材料：PLASTIC/EPOXY
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified表面贴装：YES
切换器配置：BUCK最大切换频率：1000 kHz
温度等级：INDUSTRIAL端子形式：GULL WING
端子位置：DUALBase Number Matches：1

EL7556BC 数据手册

 浏览型号EL7556BC的Datasheet PDF文件第2页浏览型号EL7556BC的Datasheet PDF文件第3页浏览型号EL7556BC的Datasheet PDF文件第4页浏览型号EL7556BC的Datasheet PDF文件第5页浏览型号EL7556BC的Datasheet PDF文件第6页浏览型号EL7556BC的Datasheet PDF文件第7页 
EL7556BC  
Integrated Adjustable 6 Amp Synchronous Switcher  
Features  
General Description  
• EL7556C/EL7556AC Pin-  
compatible  
• Improved temperature and voltage  
ranges  
• 6A continuous load current  
• Precision internal 1% reference  
• 1.0V to 3.8V output voltage  
• Internal power MOSFETs  
• >90% efficiency  
The EL7556BC is an adjustable synchronous DC:DC switching regu-  
lator optimized for a 5V input and 1.0V-3.8V output. By combining  
integrated NMOS power FETS with a fused-lead package, the  
EL7556BC can supply up to 6A continuous output current without the  
use of external power devices or discrete heat sinks, thereby minimiz-  
ing design effort and overall system cost.  
On-chip resistorless current sensing is used to achieve stable, highly  
efficient, current-mode control. The EL7556BC 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 3.5V 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 moni-  
tors 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  
• Internal soft-start  
The EL7556BC is available in a 28-pin SO package and is specified  
for operation over the full -40°C to +85°C temperature range.  
Applications  
Connection Diagram  
R4  
R3  
• PC motherboards  
V
IN  
100W  
150W  
• Local high power CPU supplies  
• 5V to 1.0V DC:DC conversion  
• Portable electronics/instruments  
• P54 and P55 regulators  
D3  
D2  
1
2
3
4
5
6
7
8
9
FB1  
CREF  
FB2 28  
CP 27  
C4  
0.1µF  
C7  
C 5  
D4*  
1µF  
R1  
39pF  
(Optional)  
CSLOPE C2V 26  
C8 220pF  
20W  
COSC  
VDD  
VIN  
VSS 25  
VHI 24  
D1  
• GTL+ Bus power supply  
R6  
C11  
0.22µF  
R5  
5.1W  
C 6 39.2W  
LX 23  
0.1µF  
VSSP  
VIN  
LX 22  
VOUT  
=
1V*(1+R3/R4)  
L1  
2.5µH  
C9  
C12  
1µF  
LX 21  
Ordering Information  
VIN  
C10  
1mF  
660µF  
VSSP  
LX 20  
Tape &  
C3  
10 VSSP  
11 VSSP  
12 VSSP  
VSSP 19  
VSSP 18  
TEST 17  
Part No  
EL7556BCM  
Package  
28-Pin SO  
28-Pin SO  
Reel  
Outline #  
MDP0027  
MDP0027  
1µF  
-
EL7556BCM-T13  
13”  
Connect to VSSP for  
external feedback  
VCC2DET  
13  
16  
PWRGD  
14 OUTEN  
OT 15  
EL7556BC  
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 EL7556ACM Only  
Manufactured under U.S. Patents No. 5,723,974 and No. 5,793,126  
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.  
1234567...13

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