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LTC3872EDDB PDF预览

LTC3872EDDB

更新时间: 2024-09-25 05:43:59
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
20页 262K
描述
No RSENSE Current Mode Boost DC/DC Controller

LTC3872EDDB 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DFN包装说明:3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.13模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE最大输入电压:9.8 V
最小输入电压:2.75 V标称输入电压:4.2 V
JESD-30 代码:R-PDSO-N8JESD-609代码:e0
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:
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC8,.08,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, 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:0.85 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:SINGLE最大切换频率:650 kHz
技术:CMOS温度等级:COMMERCIAL EXTENDED
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:DUAL
处于峰值回流温度下的最长时间:20宽度:2 mm
Base Number Matches:1

LTC3872EDDB 数据手册

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LTC3872  
No R  
SENSE  
Current Mode Boost  
DC/DC Controller  
U
DESCRIPTIO  
FEATURES  
The LTC®3872 is a constant frequency current mode  
boost DC/DC controller that drives an N-channel power  
MOSFET and requires very few external components. The  
No Current Sense Resistor Required  
OUT  
V
up to 60V  
Constant Frequency 550kHz Operation  
Internal Soft-Start and Optional External Soft-Start  
Adjustable Current Limit  
No R  
TM architecture eliminates the need for a sense  
SENSE  
resistor, improves efficiency and saves board space.  
Pulse Skipping at Light Load  
The LTC3872 provides excellent AC and DC load and line  
regulation with ±±.ꢀ5 output voltage accuracy. It incor-  
porates an undervoltage lockout feature that shuts down  
the device when the input voltage falls below 2.3V.  
V Range: 2.7ꢀV to 9.8V  
IN  
±±.ꢀ5 Voltage Reference Accuracy  
Current Mode Operation for Excellent Line and Load  
Transient Response  
High switching frequency of ꢀꢀ0kHz allows the use of a  
small inductor. The LTC3872 is available in an 8-lead low  
profile (±mm) ThinSOTTM package and 8-pin 3mm × 2mm  
DFN package.  
Low Profile (±mm) SOT-23 and 3mm × 2mm DFN  
Packages  
U
APPLICATIO S  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Telecom Power Supplies  
No R  
and ThinSOT are trademarks of Linear Technology Corporation.  
SENSE  
42V Automotive Systems  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 6498466, 6611131, 5731694.  
24V Industrial Controls  
IP Phone Power Supplies  
U
TYPICAL APPLICATIO  
High Efficiency 3.3V Input, 5V Output Boost Converter  
Efficiency and Power Loss vs Load Current  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
1.8nF  
17.4k  
V
IN  
I
V
IN  
TH  
3.3V  
47pF  
V
IN  
10μF  
IPRG  
1
1μH  
D1  
LTC3872  
GND  
SW  
0.1  
0.01  
0.001  
M1  
V
RUN/SS NGATE  
FB  
11k  
1%  
V
5V  
2A  
OUT  
1nF  
34.8k  
1%  
100μF  
×2  
3872 TA01  
1
10  
100  
1000  
10000  
LOAD CURRENT (mA)  
3872 TA01b  
3872fa  
1

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