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LTC3855EUJPBF PDF预览

LTC3855EUJPBF

更新时间： 2024-02-12 13:25:40
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
44页 2108K
描述
Dual, Multiphase Synchronous DC/DC Controller with Differential Remote Sense

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中文翻译

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LTC3855EUJPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVSON, LCC40,.24SQ,20
针数：40Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.53模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PHASE-SHIFT CONTROL
最大输入电压：38 V最小输入电压：4.5 V
标称输入电压：15 VJESD-30 代码：S-PDSO-N40
JESD-609代码：e3长度：6 mm
湿度敏感等级：1功能数量：2
端子数量：40最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：LCC40,.24SQ,20
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 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：770 kHz技术：CMOS
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：6 mmBase Number Matches：1

LTC3855EUJPBF 数据手册

 浏览型号LTC3855EUJPBF的Datasheet PDF文件第2页浏览型号LTC3855EUJPBF的Datasheet PDF文件第3页浏览型号LTC3855EUJPBF的Datasheet PDF文件第4页浏览型号LTC3855EUJPBF的Datasheet PDF文件第5页浏览型号LTC3855EUJPBF的Datasheet PDF文件第6页浏览型号LTC3855EUJPBF的Datasheet PDF文件第7页 
LTC3855  
Dual, Multiphase  
Synchronous DC/DC Controller  
with Differential Remote Sense  
FeaTures  
DescripTion  
TheLTC®3855isadualPolyPhase® currentmodesynchro-  
n
Dual, 180° Phased Controllers Reduce Required  
Input Capacitance and Power Supply Induced Noise  
High Efficiency: Up to 95%  
SENSE  
Programmable DCR Temperature Compensation  
0ꢀ.5% 0ꢀꢁ6 ꢂutput 6oltage Accuracy  
nous step-down switching regulator controller that drives  
all N-channel power MOSFET stages. It includes a high  
speed differential remote sense amplifier. The maximum  
current sense voltage is programmable for either 30mV,  
50mVor75mV, allowingtheuseofeithertheinductorDCR  
or a discrete sense resistor as the sensing element.  
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
R
or DCR Current Sensing  
Phase-Lockable Fixed Frequency 250kHz to ..0kHz  
True Remote Sensing Differential Amplifier  
Dual N-Channel MOSFET Synchronous Drive  
The LTC3855 features a precision 0.6V reference and can  
produce output voltages up to 12.5V. A wide 4.5V to 38V  
input supply range encompasses most intermediate bus  
voltages and battery chemistries. Power loss and supply  
noiseareminimizedbyoperatingthetwocontrolleroutput  
stages out of phase. Burst Mode® operation, continuous  
or pulse-skipping modes are supported.  
Wide V Range: 4.5V to 38V  
IN  
V
V
Range: 0.6V to 12.5V without Differential Amplifier  
Range: 0.6V to 3.3V with Differential Amplifier  
OUT  
OUT  
Clock Input and Output for Up to 12-Phase Operation  
Adjustable Soft-Start or V  
Tracking  
OUT  
Foldback Output Current Limiting  
The LTC3855 can be configured for up to 12-phase op-  
eration, has DCR temperature compensation, two power  
good signals and two current limit set pins. The LTC3855  
is available in low profile 40-pin 6mm × 6mm QFN and  
38-lead exposed pad FE packages.  
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and PolyPhase are registered  
trademarks of Linear Technology Corporation. All other trademarks are the property of their  
respective owners. Protected by U.S. Patents including 5481178, 5705919, 5929620, 6100678,  
6144194, 6177787, 6304066, 6580258.  
Output Overvoltage Protection  
40-Pin (6mm × 6mm) QFN and 38-Lead FE Packages  
applicaTions  
n
Computer Systems  
n
Telecom Systems  
n
Industrial and Medical Instruments  
DC Power Distribution Systems  
n
Typical applicaTion  
High Efficiency Dual 1ꢀ86/1ꢀ26 Step-Down Converter  
V
IN  
Load Step  
(Forced Continuous Mode)  
4.5V TO  
20V  
+
22µF  
1µF  
4.7µF  
V
IN  
INTV  
CC  
TG1  
TG2  
I
LOAD  
0.1µF  
0.1µF  
5A/DIV  
BOOST1  
SW1  
BOOST2  
SW2  
0.4µH  
0.56µH  
300mA TO 5A  
BG1  
BG2  
I
L
PGND1  
PGND2  
FREQ  
5A/DIV  
LTC3855  
+
+
SENSE1  
SENSE1  
SENSE2  
–
–
SENSE2  
V
OUT  
20k  
V
100mV/DIV  
OUT1  
1.8V  
15A  
V
DIFFOUT  
OUT2  
AC-COUPLED  
V
FB1  
1.2V  
V
FB2  
15A  
40.2k  
I
I
TH1  
TK/SS1 DIFFP SGND DIFFN TK/SS2  
TH2  
470pF  
470pF  
7.5k  
20k  
+
+
330µF  
×2  
330µF  
×2  
3855 TA01a  
20k  
100k  
15k  
50µs/DIV  
0.1µF  
0.1µF  
V
V
= 12V  
IN  
OUT  
= 1.8V  
3855 TA01  
3855f  
ꢀ
1234567...44

中文翻译

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