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LX1676CPW-TR PDF预览

LX1676CPW-TR

更新时间： 2024-11-11 13:09:55
品牌 Logo 应用领域
美高森美 - MICROSEMI 控制器
页数 文件大小 规格书
16页 318K
描述
Switching Controller, Voltage-mode, 1.5A, 1100kHz Switching Freq-Max, PDSO38, ROHS COMPLIANT, PLASTIC, TSSOP-38

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LX1676CPW-TR 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP38,.25,20针数：38
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.2
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G38
JESD-609代码：e3长度：9.7 mm
湿度敏感等级：1功能数量：1
端子数量：38最高工作温度：70 °C
最低工作温度：最大输出电流：1.5 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP38,.25,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：1100 kHz
温度等级：COMMERCIAL端子面层：MATTE TIN
端子形式：GULL WING端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：4.4 mmBase Number Matches：1

LX1676CPW-TR 数据手册

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LX1676  
®
TM  
Mobile AMD Athlon™ VRM Controller  
P
RODUCTION DATA SHEET  
KEY FEATURES  
DESCRIPTION  
ƒ High Current Biphase  
Operation  
ƒ Outputs As Low As 0.925V  
ƒ † Biphase LoadSHARETM  
ƒ † Transient Correction Loop  
Reduces Required  
The LX1676 is a highly integrated maximizing regulator response.  
VRM power supply controller IC A true differential input amplifier is  
featuring two PWM switching used for remote voltage sensing at the  
regulator stages.  
processor core.  
The two constant frequency  
A VID code generator provides an  
voltage-mode PWM phases are internal reference that will set the  
configured as a single biphase high output voltage. This VID code can be  
Capacitance  
ƒ Differential Amplifier For  
Remote Voltage Sensing  
ƒ Integrated High Current  
MOSFET Drivers  
ƒ 200KHz to 1MHz Frequency  
Operation  
ƒ Programmable Slew Rate  
Control For Start-Up Sequence  
and VID change  
ƒ VID Changes On The Fly  
ƒ Power Good Indicator  
ƒ Short Circuit Protection  
ƒ Output Over Voltage and  
Under Voltage Protection  
ƒ No current-sense resistors  
current output core supply.  
changed during operation and the  
In biphase operation, the high reference will slew the output voltage to  
current (>25A) output is generated by its new setting at a preset rate. During  
a
LoadSHARETM  
†
technique that VID changes on the fly the Power Good  
balances the currents in the two indication will stay valid.  
phases. Power loss and noise, due to  
Current through the lower phase 1  
the ESR of the input capacitors, are MOSFET will be sampled using its  
minimized by operating the PWMs RDS(ON) for current limit and shut  
down.  
For further protection, an over  
Transient  
180° out of phase.  
synchronized  
A
voltage circuit will trip at a specified  
setting and clamp the output by turning  
off the upper MOSFETs and turning on  
the lower MOSFETs.  
Correction Loop† provides except-  
ional control of the output droop and  
overshoot during very high di/dt load  
changes, the circuit can be configured  
for droop only, overshoot only or  
both.  
The upper MOSFET drivers will use  
a bootstrap capacitor to provide the  
upper drive voltage over the input  
voltage range of 6 to 24 volts.  
while  
APPLICATIONS  
ƒ AMD Mobile Athlon™ or  
Duron™ Processor Core  
Voltage Supply  
This architecture also minimizes  
capacitor  
requirements  
ƒ Voltage Regulator Modules  
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com  
† Patent numbers US6292378,US6285571,US6356063, US6605931  
PRODUCT HIGHLIGHT  
T r a n s i e n t C o r r e c t io n L o o p  
V in + 5  
V
V i n  
6
t o 2 4  
V
7 0 n H  
L X 1 6 7 6  
V i n  
6
t o 2 4  
V
5
B it V I D  
V o u t  
PACKAGE ORDER INFO  
Plastic TSSOP  
38-Pin  
Plastic MLPQ  
38-Pin  
PW  
LQ  
TJ (°C)  
RoHS Compliant / Pb-free Transition DC: 0518  
RoHS Compliant / Pb-free Transition DC: 0512  
0 to 70  
LX1676CPW  
LX1676CLQ  
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1676CLQ-TR)  
Copyright © 2000  
Revision: 1.0, 4/12/2005  
Microsemi  
Page 1  
Integrated Products Division  
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570  
1234567...16

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