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LX1672-03CPW PDF预览

LX1672-03CPW

更新时间： 2024-11-28 21:55:47
品牌 Logo 应用领域
美高森美 - MICROSEMI /
页数 文件大小 规格书
20页 358K
描述
Multiple Output LoadSHARE PWM

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中文翻译

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LX1672-03CPW 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SSOP
包装说明：TSSOP,针数：28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.32
模拟集成电路 - 其他类型：DUAL 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 V
JESD-30 代码：R-PDSO-G28JESD-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：28
最高工作温度：70 °C最低工作温度：
最大输出电流：1 A封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP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
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：345 kHz温度等级：COMMERCIAL
端子面层：MATTE TIN端子形式：GULL WING
端子节距：0.65 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 mm

LX1672-03CPW 数据手册

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LX1672  
®
Multiple Output LoadSHARE™ PWM  
TM  
P
RELIMINARY DATA SHEET  
KEY FEATURES  
DESCRIPTION  
ƒ Up to Three Independently  
Regulated Outputs  
The LX1672 is a highly integrated  
This patented approach also gives  
power supply controller IC featuring system designers maximum flexibility with  
two PWM switching regulator stages respect to MOSFET supply. Each phase  
with an additional onboard linear can utilize different supply voltages, for  
ƒ DDR Termination Compliant  
ƒ Bi-phase Current Sharing  
ƒ Outputs As Low As 0.8V  
Generated From An Internal 1%  
Reference  
ƒ Multiphase High Current Output  
Reduces Required Capacitance  
ƒ Integrated High Current MOSFET  
Drivers  
ƒ 300KHz, 500KHz and 600KHz  
High Frequency Operation  
Minimizes External Component  
Requirements  
ƒ Independent Phase Programmable  
Soft-Start and Power Sequencing  
ƒ Adjustable Linear Regulator Driver  
Output  
regulator driver.  
efficient use of available supplies, while  
The two constant frequency voltage- programming the ratio of current pulled  
mode PWM phases can be easily from each using one of three methods (see  
configured as a single Bi-Phase high application section).  
current output, two independently  
regulated outputs, or as a DDR memory programmable  
I/O supply with tracking DDR capabilities.  
The LX1672 incorporates fully  
soft-start sequencing  
Each output can be  
a
termination voltage supply. Power loss configured to come up in any order  
and noise, due to the ESR of the input necessary as required by the application.  
capacitors, are minimized by operating  
each PWM output 180° out of phase. Linear Regulator Driver output, which  
This architecture also minimizes when coupled with an inexpensive  
The LX1672 features an additional  
capacitor  
maximizing regulator response.  
requirements  
while MOSFET is capable of supplying up to 5A  
for I/O, memory, and other supplies  
ƒ No current-sense resistors  
In bi-phase operation, the high surrounding today’s micro-processor  
current output utilizes a patented current designs.  
APPLICATIONS/BENEFITS  
sharing architecture, called Forced  
Each regulator voltage output is  
Current Sharing†, to allow accurate programmed via a simple voltage-divider  
current sharing without the use of network. The LX1672, utilizing MOSFET  
ƒ Multi-Output Power Supplies  
ƒ Video Card Power Supplies  
ƒ DDR, VDDQ and Termination  
Supply  
ƒ PC Peripherals  
ƒ Portable PC Processor and I/O  
Supply  
expensive current sense resistors.  
RDS(ON) impedance, monitors maximum  
current limit conditions, in each PWM  
phase without the use of expensive current  
sense resistors.  
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com  
LoadSHARE is a Trademark of Microsemi Corporation  
PRODUCT HIGHLIGHT  
DDR Termination  
Refer to Typical  
Application for  
Memory Core  
....  
complete circuit.  
12V  
5V  
Graphics  
Controller  
Memory Bus  
LX1672  
DDR Memory  
3.3V  
I/O  
PACKAGE ORDER INFO  
Plastic TSSOP  
28-Pin  
Plastic MLPQ  
38-Pin  
Switching  
Frequency (kHz)  
PW  
LQ  
TA (°C)  
RoHS Compliant / Pb-free Transition DC: 0518 RoHS Compliant / Pb-free Transition DC: 0512  
0 to 70  
0 to 70  
0 to 70  
300  
500  
600  
LX1672-03CPW  
LX1672-05CPW  
LX1672-03CLQ  
LX1672-06CLQ  
NOTE: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX1672-06CLQ-TR)  
Copyright © 2000  
Rev. 0.3m, 2005-04-12  
Microsemi  
Page 1  
Linfinity Microelectronics Division  
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570  
1234567...20

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LX1672-03CPWTR MICROSEMI

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LX1672-03CPW-TR MICROSEMI

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LX1672-05CPW MICROSEMI

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LX1672-06CLQ MICROSEMI

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 		Multiple Output LoadSHARE PWM TM
LX1672-06CLQTR MICROSEMI

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 		1A DUAL SWITCHING CONTROLLER, 690kHz SWITCHING FREQ-MAX, PQCC38, PLASTIC, MLPQ-38
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 		Multiple Output LoadSHARE PWM TM
LX1673 MICROSEMI

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LX1673-03CLQ MICROSEMI

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