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LTC1709EG-8#PBF

更新时间： 2024-09-24 12:58:11
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
28页 261K
描述
LTC1709-8 - 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulators; Package: SSOP; Pins: 36; Temperature Range: -40°C to 85°C

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LTC1709EG-8#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：36Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.48模拟集成电路 - 其他类型：DUAL 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：BUCK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

LTC1709EG-8#PBF 数据手册

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LTC1709-8/LTC1709-9  
2-Phase, 5-Bit VID,  
Current Mode, High Efficiency,  
Synchronous Step-Down Switching Regulators  
U
FEATURES  
DESCRIPTIO  
The LTC®1709-8/LTC1709-9 are 2-phase, VID program-  
mable, synchronous step-down switching regulator con-  
trollersthatdrivetwoallN-channelexternalpowerMOSFET  
stages in a fixed frequency architecture. The 2-phase  
controller drives its two output stages out of phase at  
■
Single Controller Operates Two Output Stages  
Antiphase Reducing Required Input Capacitance  
and Power Supply Induced Noise  
■
Two 5-Bit Desktop VID Codes:  
LTC1709-8 For VRM8.4 (VOUT from 1.3V to 3.5V)  
LTC1709-9 For VRM9.0 (VOUT from 1.1V to 1.85V) frequencies from 150kHz to 300kHz to minimize the RMS  
■
■
■
■
■
■
■
■
■
■
■
■
Current Mode Control Ensures Best Current Sharing  
True Remote Sensing Differential Amplifier  
Power Good Output Indicator  
ripple currents in both input and output capacitors. The 2-  
phase technique effectively multiplies the fundamental  
frequency by two, improving transient response while  
operating each channel at an optimum frequency for  
efficiency. Thermal design is also simplified.  
OPTI-LOOPTM Compensation Minimizes COUT  
Programmable Fixed Frequency: 150kHz to 300kHz  
±1% Output Voltage Accuracy  
An internal differential amplifier provides true remote  
sensing of the regulated supply’s positive and negative  
output terminals as required for high current applications.  
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  
Low Shutdown Current: 20µA  
The RUN/SS pin provides soft-start and optional timed,  
short-circuit shutdown. Current foldback limits MOSFET  
dissipation during short-circuit conditions when the  
overcurrent latchoff is disabled. OPTI-LOOP compensa-  
tion allows the transient response to be optimized for a  
wide range of output capacitors and ESR values. The  
LTC1709-8/LTC1709-9 implement two different VID  
tables compliant with VRM8.4 and VRM9.0 respectively.  
Available in 36-LUead Narrow SSOP Package  
APPLICATIO S  
■
Workstations  
Internet Servers  
Large Memory Arrays  
DC Power Distribution Systems  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
OPTI-LOOP is a trademark of Linear Technology Corporation.  
■
U
TYPICAL APPLICATION  
V
IN  
5V TO 28V  
+
10µF  
35V  
×4  
0.1µF  
V
IN  
TG1  
BOOST1  
SW1  
S
0.002Ω  
RUN/SS  
0.47µF  
220pF  
1µH  
3.3k  
S
LTC1709-8  
I
BG1  
TH  
SGND  
PGND  
+
SENSE1  
SENSE1  
PGOOD  
–
5 VID BITS VID0–VID4  
TG2  
BOOST2  
SW2  
0.002Ω  
V
OUT  
1.3V TO 3.5V  
40A  
EAIN  
0.47µF  
1µH  
ATTENOUT  
ATTENIN  
BG2  
V
V
V
INTV  
DIFFOUT  
CC  
+
10µF  
C
OUT  
+
–
SENSE2  
SENSE2  
OS  
1000µF  
4V  
+
–
OS  
×2  
17097 F01  
Figure 1. High Current 2-Phase Step-Down Converter  
1
1234567...28

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LTC1709EG-8#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC1709EG-8#TRPBF Linear

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