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EL7571C

更新时间： 2024-09-15 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
23页 478K
描述
Programmable PWM Controller

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中文翻译

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EL7571C 技术参数

生命周期：Transferred包装说明：SO-20
Reach Compliance Code：unknown风险等级：5.72
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：12.6 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G20
功能数量：1端子数量：20
最高工作温度：70 °C最低工作温度：
最大输出电流：3 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：PUSH-PULL最大切换频率：1000 kHz
温度等级：COMMERCIAL端子形式：GULL WING
端子位置：DUALBase Number Matches：1

EL7571C 数据手册

 浏览型号EL7571C的Datasheet PDF文件第2页浏览型号EL7571C的Datasheet PDF文件第3页浏览型号EL7571C的Datasheet PDF文件第4页浏览型号EL7571C的Datasheet PDF文件第5页浏览型号EL7571C的Datasheet PDF文件第6页浏览型号EL7571C的Datasheet PDF文件第7页 
EL7571C  
Programmable PWM Controller  
Features  
General Description  
• Pentium® II Compatible  
The EL7571C is a flexible, high efficiency, current mode, PWM step  
down controller. It incorporates five bit DAC adjustable output voltage  
control which conforms to the Intel Voltage Regulation Module (VRM)  
Specification for Pentium® II and Pentium® Pro class processors. The  
controller employs synchronous rectification to deliver efficiencies  
greater than 90% over a wide range of supply voltages and load condi-  
tions. The on-board oscillator frequency is externally adjustable, or may  
be slaved to a system clock, allowing optimization of RFI performance in  
critical applications. In single supply operation, the high side FET driver  
supports boot-strapped operation. For maximum flexibility, system oper-  
ation is possible from either a 5V rail, a single 12V rail, or dual supply  
rails with the controller operating from 12V and the power FETs from  
5V.  
• 5 bit DAC Controlled Output Voltage  
• Greater than 90% Efficiency  
• 4.5V to 12.6V Input Range  
• Dual NMOS Power FET Drivers  
• Fixed frequency, Current Mode  
Control  
• Adjustable Oscillator with External  
Sync. Capability  
• Synchronous Switching  
• Internal Soft-Start  
• User Adjustable Slope  
Compensation  
• Pulse by Pulse Current Limiting  
• 1% Typical Output Accuracy  
• Power Good Signal  
• Output Power Down  
• Over Voltage Protection  
Connection Diagram  
R2  
5W  
D1  
Applications  
C6 0.1µF  
ENABLE  
1.4V  
1
2
3
4
5
6
7
8
9
OTEN  
CSLOPE  
COSC  
REF  
VH1 20  
HSD 19  
LX 18  
L2  
C3 240pF  
C3 240pF  
4.5V  
to  
12.6V  
• Pentium® II Voltage Regulation  
Modules (VRMs)  
• PC Motherboards  
• DC/DC Converters  
• GTL Bus Termination  
• Secondary Regulation  
1.5µH  
C1  
C8  
Q1  
1µF 1000µF  
x3  
V
OUT  
C3  
1.3V to  
3.5V  
VIN 17  
VINP 16  
LSD 15  
GNDP 14  
GND 13  
CS 12  
L1  
R2  
5W  
0.1µF  
5.1µH  
C2  
C7  
PWRGD  
VIDO  
POWER  
GOOD  
1µF  
1000µF  
x6  
Q2  
D2  
Ordering Information  
VID1  
Voltage  
I.D.  
(VID  
Part No  
Temp. Range  
Package  
Outline #  
EL7571C  
0°C to +70°C  
20-Pin SO  
MDP0027  
VID2  
(0:4))  
VID3  
10 VID4  
FB 11  
Q1, Q2: Siliconix, Si4410, x2  
C1: Sanyo, 16MV 1000GX, 1000µF x3  
C2: Sanyo, 6MV 1000GX, 1000µF x6  
L1: Pulse Engineering, PE-53700, 5.1µH  
L2: Micrometals, T30-26, 7T AWG #20, 1.5µH  
R1: Dale, WSL-25-12, 15mW, x2  
D1: BAV99  
D2: IR, 32CTQ030  
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...23

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