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LTC3732CUHF#TR

更新时间： 2024-11-13 13:09:51
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
32页 388K
描述
LTC3732 - 3-Phase, 5-Bit VID, 600kHz, Synchronous Buck Switching Regulator Controller; Package: QFN; Pins: 38; Temperature Range: 0°C to 70°C

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中文翻译

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LTC3732CUHF#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：QFN包装说明：VQCCN,
针数：38Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.2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：7 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-PQCC-N38
JESD-609代码：e0长度：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：5 A
封装主体材料：PLASTIC/EPOXY封装代码：VQCCN
封装形状：RECTANGULAR封装形式：CHIP CARRIER, VERY THIN PROFILE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：0.8 mm表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：750 kHz
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：20
宽度：5 mmBase Number Matches：1

LTC3732CUHF#TR 数据手册

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LTC3735  
2-Phase, High Efficiency  
DC/DC Controller for  
Intel Mobile CPUs  
FEATURES  
DESCRIPTION  
The LTC®3735 is a 2-phase synchronous step-down  
switching regulator controller that drives all N-channel  
power MOSFETs in a constant frequency architecture. The  
output voltage is programmable by six VID bits during  
normal operation and by external resistors during initial  
boot-upanddeepersleepstate.TheLTC3735drivesitstwo  
output stages out-of-phase at frequencies up to 550kHz  
to minimize the RMS ripple currents in both input and  
output capacitors. This antiphase technique also doubles  
the apparent switching frequency, improving the transient  
response while operating each phase at an optimum fre-  
quency for efficiency. Thermal design is further simplified  
bycycle-by-cyclecurrentsharingbetweenthetwophases.  
n
Output Stages Operate Antiphase  
n
1ꢀ Output ꢁoltage Accuracy  
n
6-Bit IMꢁP-Iꢁ ꢁID Code: ꢁ  
= 0.7ꢁ to 1.708ꢁ  
OUT  
n
n
n
n
n
n
Intel Compatible Power Saving Mode (PSIB)  
Stage Shedding Improves Low Current Efficiency  
Power Good Output with Adaptive Masking  
Lossless ꢁoltage Positioning  
Dual Input Supply Capability for Load Sharing  
Resistor Programmable V  
Sleep State  
at Boot-Up and Deeper  
OUT  
n
n
n
n
n
n
n
Resistor Programmable Deep Sleep Offset  
Programmable Fixed Frequency: 210kHz to 550kHz  
Adjustable Soft-Start Current Ramping  
Foldback Output Current Limit  
Short-Circuit Shutdown Timer with Defeat Option  
Overvoltage Protection  
AnIntelcompatiblePSIBinputisprovidedtoselectbetween  
two modes of operation. Fully enhanced synchronous  
mode achieves a very small output ripple and very fast  
transient response while power saving mode realizes  
very high efficiency. OPTI-LOOP® compensation allows  
the transient response to be optimized for a wide range  
of output capacitance and ESR values.  
Available in 36-Lead SSOP (0.209 Wide) and 38-Lead  
(5mm × 7mm) Packages  
APPLICATIONS  
n
Mobile and Desktop Computers  
Internet Servers  
L, LT, LTC, LTM, OPTI-LOOP, PolyPhase, Linear Technology and the Linear logo are registered  
trademarks of Linear Technology Corporation. All other trademarks are the property of their  
respective owners.  
n
TYPICAL APPLICATION  
M1  
M2  
MCH_PG  
DPRSLPVR  
STP_CPUB  
PSIB  
TG1  
SW1  
1µH  
D1  
0.002Ω  
0.002Ω  
V
IN  
5V TO 24V  
BG1  
FREQSET  
PGND  
VID5-VID0  
V
OUT  
+
–
0.7V TO 1.708V  
40A  
PGOOD SENSE1  
SENSE1  
C
C
IN  
OUT  
+
I
TH  
330µF  
2V  
10µF  
35V  
×4  
R
C
100pF  
RUN/SS  
M3  
M4  
TG2  
SW2  
BG2  
4.74k  
1µH  
D2  
×5  
232k  
C
C
0.1µF  
470pF  
SGND  
+
V
OA  
LTC3735  
+
–
SENSE2  
SENSE2  
4.5V TO 7V  
PV  
CC  
13.3k  
V
4.7µF  
12.7k  
RBOOT  
BAT54A  
56.2k  
13.3k  
BOOST1 RDPRSLP  
1.27M  
549k  
BOOST2  
RDPSLP  
+
0.47µF  
0.47µF  
+
V
OA  
OA  
OAOUT  
–
SW2  
SW1  
V
OA  
3735 F01  
Figure 1. High Current 2-Phase Step-Down Converter  
3735fa  
1
1234567...32

中文翻译

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