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LTC3786EMSE#PBF

更新时间： 2024-11-05 21:13:31
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
34页 335K
描述
LTC3786 - Low IQ Synchronous Boost Controller; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3786EMSE#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：HTSSOP, TSSOP16,.19,20
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.45其他特性：ALSO OPERATES IN ADJUSTABLE MODE UP TO 60V
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：38 V
最小输入电压：4.5 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：4.039 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：
标称输出电压：5.4 V封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP16,.19,20
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：900 kHz技术：CMOS
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：GULL WING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：3 mmBase Number Matches：1

LTC3786EMSE#PBF 数据手册

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LTC3786  
Low I Synchronous  
Q
Boost Controller  
FEATURES  
DESCRIPTION  
®
The LTC 3786 is a high performance synchronous boost  
n
Synchronous Operation For Highest Efficiency and  
Reduced Heat Dissipation  
converter controller that drives all N-channel power  
MOSFETs. Synchronous rectification increases efficiency,  
reduces power losses and eases thermal requirements,  
allowing the LTC3786 to be used in high power boost  
applications.  
n
Wide V Range: 4.5V to 38V (40V Abs Max) and  
IN  
Operates Down to 2.5V After Start-Up  
n
Output Voltages Up to 60V  
n
1ꢀ 1.2V Reference Voltage  
n
R
or Inductor DCR Current Sensing  
SENSE  
A 4.5V to 38V input supply range encompasses a wide  
range of system architectures and battery chemistries.  
When biased from the output of the boost converter or  
another auxiliary supply, the LTC3786 can operate from  
an input supply as low as 2.5V after start-up. The 55µA  
no-load quiescent current extends operating run time in  
battery-powered systems.  
n
n
n
n
n
n
n
n
n
100ꢀ DutyCycleCapabilityforSynchronousMOSFET  
Low Quiescent Current: 55µA  
Phase-Lockable Frequency (75kHz to 850kHz)  
Programmable Fixed Frequency (50kHz to 900kHz)  
Adjustable Output Voltage Soft-Start  
Power Good Output Voltage Monitor  
Low Shutdown Current I : <8µA  
Q
The operating frequency can be set for a 50kHz to 900kHz  
range or synchronized to an external clock using the  
internal PLL. The LTC3786 also features a precision 1.2V  
reference and a power good output indicator. The SS pin  
rampstheoutputvoltageduringstart-up.ThePLLIN/MODE  
Internal 5.4V LDO for Gate Drive Supply  
Thermally Enhanced 16-Pin 3mm × 3mm QFN and  
MSOP Packages  
APPLICATIONS  
®
pin selects among Burst Mode operation, pulse-skipping  
n
Industrial and Automotive Power Supplies  
mode or continuous inductor current mode at light loads.  
n
Automotive Start-Stop Systems  
All registered trademarks and trademarks are the property of their respective owners.  
n
Medical Devices  
n
High Voltage Battery-Powered Systems  
TYPICAL APPLICATION  
12V to 24V/5A Synchronous Boost Converter  
Efficiency and Power Loss  
vs Load Current  
V
IN  
4.5V TO 24V  
VBIAS  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10000  
1000  
100  
10  
+
SENSE  
LTC3786  
SENSE  
4mΩ  
220µF  
BURST  
EFFICIENCY  
–
BURST  
LOSS  
PGOOD  
PLLIN/MODE  
RUN  
3.3µH  
FREQ  
TG  
0.1µF  
V
OUT  
24V  
5A  
SS  
SW  
0.1µF  
15nF  
220µF  
8.66k  
BOOST  
BG  
ITH  
V
= 12V  
IN  
220pF  
1
V
= 24V  
OUT  
Burst Mode OPERATION  
FIGURE 8 CIRCUIT  
12.1k  
INTV  
CC  
VFB  
0.1  
4.7µF  
0.00001 0.0001 0.001 0.01  
0.1  
1
10  
GND  
232k  
OUTPUT CURRENT (A)  
3786 TA01a  
3786 TA01b  
3786fc  
1
For more information www.linear.com/LTC3786  
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