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LTC3642EMS8E-5#PBF

更新时间： 2024-11-19 20:57:27
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
22页 1681K
描述
LTC3642 - High Efficiency, High Voltage 50mA Synchronous Step-Down Converter; Package: MSOP; Pins: 8; Temperature Range: -40°C to 85°C

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LTC3642EMS8E-5#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, TSSOP8,.19
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：6.9模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：45 V
最小输入电压：4.5 V标称输入电压：10 V
JESD-30 代码：S-PDSO-G8JESD-609代码：e3
长度：3 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：
最大输出电流：0.05 A标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP8,.19封装形状：SQUARE
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：BUCK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：0.65 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

LTC3642EMS8E-5#PBF 数据手册

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LTC3642  
High Efficiency, High Voltage  
50mA Synchronous  
Step-Down Converter  
FEATURES  
DESCRIPTION  
The LTC®3642 is a high efficiency, high voltage step-down  
DC/DC converter with internal high side and synchronous  
power switches that draws only 12μA typical DC sup-  
ply current at no load while maintaining output voltage  
regulation.  
n
Wide Input Voltage Range: 4.5V to 45V  
n
Tolerant of 60V Input Transients  
n
Internal High Side and Low Side Power Switches  
n
No Compensation Required  
50mA Output Current  
n
n
Low Dropout Operation: 100% Duty Cycle  
The LTC3642 can supply up to 50mA load current and  
features a programmable peak current limit that provides  
a simple method for optimizing efficiency in lower current  
applications. The LTC3642’s combination of Burst Mode®  
operation, integrated power switches, low quiescent cur-  
rent, and programmable peak current limit provides high  
efficiency over a broad range of load currents.  
n
Low Quiescent Current: 12µA  
n
0.8V Feedback Voltage Reference  
n
Adjustable Peak Current Limit  
n
Internal and External Soft-Start  
n
Precise RUN Pin Threshold with Adjustable  
Hysteresis  
n
3.3V, 5V and Adjustable Output Versions  
n
With its wide 4.5V to 45V input range and internal  
overvoltagemonitorcapableofprotectingthepartthrough  
60V surges, the LTC3642 is a robust converter suited for  
regulating a wide variety of power sources. Additionally,  
theLTC3642includesapreciserunthresholdandsoft-start  
feature to guarantee that the power system start-up is  
well-controlled in any environment.  
Only Three External Components Required for Fixed  
Output Versions  
n
Low Profile (0.75mm) 3mm × 3mm DFN and  
Thermally-Enhanced MS8E Packages  
APPLICATIONS  
n
4mA to 20mA Current Loops  
The LTC3642 is available in the thermally enhanced  
3mm × 3mm DFN and MS8E packages.  
L, LT, LTC, LTM, Burst Mode, Linear Technology, and the Linear logo are registered trademarks  
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
n
ꢀIndustrial Control Supplies  
n
ꢀDistributed Power Systems  
n
ꢀPortable Instruments  
n
ꢀBattery-Operated Devices  
n
ꢀAutomotive Power Systems  
Efficiency and Power Loss vs Load Current  
TYPICAL APPLICATION  
100  
V
= 10V  
IN  
95  
90  
85  
80  
75  
70  
65  
100  
10  
1
5V, 50mA Step-Down Converter  
EFFICIENCY  
150µH  
V
OUT  
V
IN  
V
SW  
5V  
IN  
5V TO 45V  
1µF  
50mA  
LTC3642-5  
10µF  
POWER LOSS  
RUN  
HYST  
V
OUT  
SS  
I
SET  
GND  
3642 TA01a  
0.1  
100  
0.1  
1
10  
LOAD CURRENT (mA)  
3642 TA01b  
3642fc  
1
1234567...22

中文翻译

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LTC3642EMS8E-5#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3642IMS8E-5#PBF Linear

类似代替

 LTC3642 - High Efficiency, High Voltage 50mA Synchronous Step-Down Converter; Package: MSO

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