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LTC1709EG-7 PDF预览

LTC1709EG-7

更新时间： 2024-09-23 21:54:43
品牌 Logo 应用领域
凌特 - Linear 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
页数 文件大小 规格书
28页 319K
描述
2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator

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中文翻译

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LTC1709EG-7 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP,
针数：36Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.15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：36 V最小输入电压：4 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G36
JESD-609代码：e0长度：12.8 mm
湿度敏感等级：1功能数量：1
端子数量：36最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：3 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：2 mm表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：360 kHz
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
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：20
宽度：5.3 mmBase Number Matches：1

LTC1709EG-7 数据手册

 浏览型号LTC1709EG-7的Datasheet PDF文件第2页浏览型号LTC1709EG-7的Datasheet PDF文件第3页浏览型号LTC1709EG-7的Datasheet PDF文件第4页浏览型号LTC1709EG-7的Datasheet PDF文件第5页浏览型号LTC1709EG-7的Datasheet PDF文件第6页浏览型号LTC1709EG-7的Datasheet PDF文件第7页 
LTC1709-7  
2-Phase, 5-Bit VID,  
Current Mode, High Efficiency,  
Synchronous Step-Down Switching Regulator  
U
FEATURES  
DESCRIPTIO  
■
Output Stages Operate Antiphase Reducing Input  
Capacitance Requirements and Power Supply  
Induced Noise  
TheLTC®1709-7isa2-phase,VIDprogrammable,synchro-  
nous step-down switching regulator controller that drives  
twoallN-channelexternalpowerMOSFETstagesinafixed  
frequencyarchitecture.The2-phasecontrollerdrivesitstwo  
output stages out of phase at frequencies up to 300kHz to  
minimize the RMS ripple currents in both input and output  
capacitors.The2-phasetechniqueeffectivelymultipliesthe  
fundamental frequency by two, improving transient re-  
sponse while operating each channel at an optimum fre-  
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
Dual Input Supply Capability for Load Sharing  
5-Bit Mobile VID Code: VOUT = 0.925V to 2V  
Current Mode Control Ensures Current Sharing  
True Remote Sensing Differential Amplifier  
Power Good Output Indicator  
OPTI-LOOPTM Compensation Minimizes COUT  
Three Operational Modes: PWM, Burst and Cycle Skip quency for efficiency. Thermal design is also simplified.  
Programmable Fixed Frequency: 150kHz to 300kHz  
An operating mode select pin (FCB) can be used to regu-  
±1% Output Voltage Accuracy  
late a secondary winding or select among three modes  
Wide VIN Range: 4V to 36V Operation  
includingBurstModeTM operationforhighestefficiency.An  
Adjustable Soft-Start Current Ramping  
internaldifferentialamplifierprovidestrueremotesensing  
Internal Current Foldback and Short-Circuit Shutdown  
of the regulated supply’s positive and negative output ter-  
Overvoltage Soft Latch Eliminates Nuisance Trips  
minals as required in high current applications.  
Active Voltage Positioning Capable  
Available in 36-LUead Narrow SSOP Package  
The RUN/SS pin provides soft-start and optional timed,  
short-circuit shutdown. Current foldback limits MOSFET  
APPLICATIO S  
■
dissipation during short-circuit conditions when the  
overcurrentlatchoffisdisabled.OPTI-LOOPcompensation  
allows the transient response to be optimized for a wide  
range of output capacitors and ESR values.  
Mobile/Desktop Computers  
Internet Servers  
Large Memory Arrays  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
OPTI-LOOP and Burst Mode are trademarks of Linear Technology Corporation.  
■
DC Power Distribution Systems  
U
TYPICAL APPLICATIO  
V
IN  
5V TO 28V  
+
10µF  
35V  
×4  
0.1µF  
V
IN  
FCB  
TG1  
S
0.002Ω  
RUN/SS  
BOOST1  
SW1  
0.47µF  
220pF  
3.3k  
1µH  
S
LTC1709-7  
I
TH  
BG1  
SGND  
PGND  
+
SENSE1  
SENSE1  
PGOOD  
–
5 VID BITS VID0–VID4  
TG2  
BOOST2  
SW2  
0.002Ω  
V
OUT  
0.925V TO 2V  
40A  
EAIN  
0.47µF  
1µH  
ATTENOUT  
ATTENIN  
BG2  
V
V
V
INTV  
DIFFOUT  
CC  
+
10µF  
C
OUT  
+
–
SENSE2  
SENSE2  
OS  
1000µF  
4V  
+
–
OS  
×2  
170989 F01  
Figure 1. High Current Dual Phase Step-Down Converter  
1
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中文翻译

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LTC1709EG-7 替代型号

型号 品牌 替代类型 描述 数据表
LTC1709EG#PBF Linear

完全替代

 LTC1709 - 2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regul

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