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LTC3631EDD-3.3#PBF

更新时间： 2024-09-24 20:51:55
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 524K
描述
LTC3631 - High Efficiency, High Voltage 100mA Synchronous Step-Down Converter; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

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LTC3631EDD-3.3#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC8,.12,20
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：2.85模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：HYSTERETIC 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 VJESD-30 代码：S-PDSO-N8
JESD-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：0.1 A
标称输出电压：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC8,.12,20
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：BUCK
技术：CMOS温度等级：OTHER
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：3 mm
Base Number Matches：1

LTC3631EDD-3.3#PBF 数据手册

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LTC3631  
High Efficiency, High Voltage  
100mA Synchronous  
Step-Down Converter  
FeaTures  
DescripTion  
The LTC®3631 is a high voltage, high efficiency step-down  
DC/DC converter with internal high side and synchronous  
power switches that draws only 12μA typical DC supply  
current at no load while maintaining output voltage  
regulation.  
n
Wide Input Voltage Range: Operation from 4.5V to 45V  
n
Overvoltage Lockout Provides Protection Up to 60V  
n
Internal High Side and Low Side Power Switches  
n
No Compensation Required  
100mA Output Current  
n
n
Low Dropout Operation: 100% Duty Cycle  
The LTC3631 can supply up to 100mA load current and  
features a programmable peak current limit that provides  
a simple method for optimizing efficiency in lower current  
applications. The LTC3631’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 1ꢀ Feedback Voltage Reference  
n
Adjustable Peak Current Limit  
Internal and External Soft-Start  
n
n
Precise RUN Pin Threshold with Adjustable  
Hysteresis  
n
3.3V, 5V and Adjustable Output Versions  
n
Withitswide4.5Vto45Vinputrangeandinternalovervolt-  
agemonitorcapableofprotectingthepartfrom60Vsurges,  
the LTC3631 is a robust converter suited for regulating a  
wide variety of power sources. Additionally, the LTC3631  
includes a precise run threshold and a soft-start feature  
to guarantee that 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 LTC3631 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  
EFFICIENCY  
90  
80  
70  
60  
50  
40  
30  
20  
1000  
100  
10  
5V, 100mA Step-Down Converter  
100µH  
V
OUT  
V
IN  
V
SW  
LTC3631-5  
5V  
IN  
5V TO 45V  
2.2µF  
100mA  
10µF  
RUN  
HYST  
V
POWER LOSS  
OUT  
SS  
I
SET  
GND  
1
V
V
= 12V  
= 36V  
IN  
IN  
3631 TA01a  
0.1  
1
10  
100  
LOAD CURRENT (mA)  
3631 TA01b  
3631fe  
1
For more information www.linear.com/LTC3631  
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