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LTC1435AIS#TR

更新时间： 2024-11-23 19:47:39
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
20页 333K
描述
LTC1435A - High Efficiency Low Noise Synchronous Step-Down Switching Regulator; Package: SO; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LTC1435AIS#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：SOIC包装说明：SOP, SOP16,.25
针数：16Reach Compliance Code：not_compliant
风险等级：5.76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：30 V最小输入电压：3.5 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e0长度：9.9 mm
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：2 A最大输出电压：9 V
最小输出电压：1.19 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified座面最大高度：1.75 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：138 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：3.9116 mmBase Number Matches：1

LTC1435AIS#TR 数据手册

 浏览型号LTC1435AIS#TR的Datasheet PDF文件第2页浏览型号LTC1435AIS#TR的Datasheet PDF文件第3页浏览型号LTC1435AIS#TR的Datasheet PDF文件第4页浏览型号LTC1435AIS#TR的Datasheet PDF文件第5页浏览型号LTC1435AIS#TR的Datasheet PDF文件第6页浏览型号LTC1435AIS#TR的Datasheet PDF文件第7页 
LTC1435  
High Efficiency Low Noise  
Synchronous Step-Down  
Switching Regulator  
U
FEATURES  
DESCRIPTION  
The LTC®1435 is a synchronous step-down switching  
regulator controller that drives external N-channel power  
MOSFETs using a fixed frequency architecture. Burst  
ModeTM operation provides high efficiency at low load  
currents.Amaximumdutycyclelimitof99%provideslow  
dropout operation which extends operating time in bat-  
tery-operated systems.  
■
Dual N-Channel MOSFET Synchronous Drive  
■
Programmable Fixed Frequency  
■
Wide VIN Range: 3.5V to 36V Operation  
■
Ultrahigh Efficiency  
■
Very Low Dropout Operation: 99% Duty Cycle  
■
Low Standby Current  
■
Secondary Feedback Control  
■
Programmable Soft Start  
The operating frequency is set by an external capacitor  
allowing maximum flexibility in optimizing efficiency. A  
secondary winding feedback control pin, SFB, guarantees  
regulation regardless of load on the main output by  
forcing continuous operation. Burst Mode operation is  
inhibited when the SFB pin is pulled low which reduces  
noise and RF interference.  
■
Remote Output Voltage Sense  
■
Logic Controlled Micropower Shutdown: IQ < 25µA  
■
Foldback Current Limiting (Optional)  
■
Current Mode Operation for Excellent Line and Load  
Transient Response  
Output Voltages from 1.19V to 9V  
■
■
Available in 16-LUead Narrow SO and SSOP Packages  
Soft start is provided by an external capacitor which can  
be used to properly sequence supplies. The operating  
currentlevelisuser-programmableviaanexternalcurrent  
sense resistor. Wide input supply range allows operation  
from 3.5V to 30V (36V maximum).  
APPLICATIONS  
■
Notebook and Palmtop Computers, PDAs  
Cellular Telephones and Wireless Modems  
Portable Instruments  
Battery-Operated Devices  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
■
DC Power Distribution Systems  
U
TYPICAL APPLICATION  
V
IN  
4.5V TO 28V  
C
V
IN  
OSC  
C
IN  
+
C
OSC  
22µF  
35V  
× 2  
M1  
Si4412DY  
RUN/SS  
TG  
68pF  
C
R
SS  
0.1µF  
SENSE  
0.033Ω  
V
OUT  
I
SW  
TH  
2.9V/3.5A  
L1  
C
D
C
B
LTC1435  
INTV  
10µH  
330pF  
CMDSH-3  
R1  
C
C
R
OUT  
B
C
32.4k  
CC  
+
100µF  
10V  
0.1µF  
10k  
SGND  
BOOST  
R2  
22.1k  
× 2  
D1  
MBRS140T3  
+
100pF  
4.7µF  
M2  
Si4412DY  
V
BG  
OSENSE  
PGND  
SENSE  
–
+
SENSE  
1000pF  
1435 F01  
Figure 1. High Efficiency Step-Down Converter  
1
1234567...20

中文翻译

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