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LTC3719EG#PBF

更新时间： 2024-11-11 20:09:47
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
32页 443K
描述
LTC3719 - 2-Phase, High Efficiency, Step-Down Controller for AMD Opteron CPUs; Package: SSOP; Pins: 24; Temperature Range: -40°C to 85°C

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LTC3719EG#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP36,.3
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.65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：e3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：70 °C
最低工作温度：最大输出电流：3 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP36,.3封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2 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：360 kHz
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)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：30宽度：5.3 mm
Base Number Matches：1

LTC3719EG#PBF 数据手册

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LTC3719  
2-Phase, High Efficiency,  
Step-Down Controller for  
AMD Opteron™ CPUs  
U
DESCRIPTIO  
FEATURES  
■
Output Stages Operate Antiphase Reducing Input  
The LTC®3719 is a 2-phase, VID programmable, synchro-  
nous step-down switching regulator controller that drives  
twoN-channelexternalpowerMOSFETstagesinafixedfre-  
quency architecture. The 2-phase controller drives its two  
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-  
quency for efficiency. Thermal design is also simplified.  
and Output Capacitance Requirements and Power  
Supply Induced Noise  
■
Dual Input Supply Capability for Load Sharing  
■
5-Bit AMD CPU VID Code:  
VOUT = 0.8V to 1.55V  
■
±1% Output Voltage Accuracy  
■
True Remote Sensing Differential Amplifier  
■
Power Good Output Voltage Monitor  
■
Supports Active Voltage Positioning  
■
Current Mode Control Ensures Current Sharing  
An operating mode select pin (FCB) can be used to select  
among three modes including Burst Mode® operation for  
highestefficiency.Aninternaldifferentialamplifierprovides  
true remote sensing of the regulated supply’s positive and  
negative output terminals as required in high current ap-  
plications.  
OPTI-LOOP® Compensation Minimizes COUT  
■
■
Three Operational Modes: PWM, Burst and Cycle Skip  
Programmable Fixed Frequency: 150kHz to 300kHz  
Wide VIN Range: 4V to 36V Operation  
Adjustable Soft-Start Current Ramping  
Internal Current Foldback and Short-Circuit Shutdown  
Overvoltage Soft Latch Eliminates Nuisance Trips  
■
■
■
■
■
■
The RUN/SS pin provides soft-start and optional timed,  
short-circuit shutdown. Current foldback limits MOSFET  
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.  
Available in 36-LUead Narrow (0.209) SSOP Package  
APPLICATIO S  
■
Servers and Workstations  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
OPTI-LOOP and Burst Mode are registered trademarks of Linear Technology Corporation.  
AMD Opteron is a trademark of Advanced Micro Devices, Inc.  
U
TYPICAL APPLICATIO  
V
IN  
5V TO 28V  
10µF  
35V  
×6  
0.1µF  
V
IN  
FCB  
TG1  
BOOST1  
SW1  
S
0.002Ω  
RUN/SS  
0.47µF  
220pF  
1µH  
3.3k  
S
LTC3719  
D1  
I
BG1  
TH  
SGND  
PGND  
+
SENSE1  
SENSE1  
PGOOD  
–
5 VID BITS VID0–VID4  
TG2  
BOOST2  
SW2  
V
_
0.002Ω  
DD CORE  
EAIN  
0.47µF  
0.8V TO 1.55V  
45A  
1µH  
ATTENOUT  
ATTENIN  
D2  
BG2  
+
V
V
V
INTV  
DIFFOUT  
CC  
+
C
OUT  
+
–
SENSE2  
SENSE2  
OS  
270µF  
2V  
10µF  
+
–
OS  
×4  
3716 F01  
Figure 1. High Current Dual Phase Step-Down Converter  
sn3719 3719fs  
1
1234567...32

中文翻译

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LTC3719EG#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3719EG#TRPBF Linear

完全替代

 LTC3719 - 2-Phase, High Efficiency, Step-Down Controller for AMD Opteron CPUs; Package: SS

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