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LT3481IDD PDF预览

LT3481IDD

更新时间： 2024-02-18 04:57:00
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
24页 300K
描述
36V, 2A, 2.8MHz Step-Down Switching Regulator with 50μA Quiescent Current

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中文翻译

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LT3481IDD 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, TSSOP10,.19,20
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.06Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 1.265 V TO 20 V模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：34 V最小输入电压：3.6 V
标称输入电压：10 VJESD-30 代码：S-PDSO-G10
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：10最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：4.4 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP10,.19,20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：1.0124 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：3100 kHz
温度等级：AUTOMOTIVE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

LT3481IDD 数据手册

 浏览型号LT3481IDD的Datasheet PDF文件第2页浏览型号LT3481IDD的Datasheet PDF文件第3页浏览型号LT3481IDD的Datasheet PDF文件第4页浏览型号LT3481IDD的Datasheet PDF文件第5页浏览型号LT3481IDD的Datasheet PDF文件第6页浏览型号LT3481IDD的Datasheet PDF文件第7页 
LT3481  
36V, 2A, 2.8MHz Step-Down  
Switching Regulator with  
50µA Quiescent Current  
FEATURES  
DESCRIPTION  
TheLT®3481isanadjustablefrequency(300kHzto2.8MHz)  
monolithic buck switching regulator that accepts input  
voltages up to 34V (36V maximum). A high efficiency  
0.18Ω switch is included on the die along with a boost  
Schottky diode and the necessary oscillator, control, and  
logic circuitry. Current mode topology is used for fast  
transient response and good loop stability. Low ripple  
Burst Mode operation maintains high efficiency at low  
output currents while keeping output ripple below 15mV  
in a typical application. In addition, the LT3481 can fur-  
ther enhance low output current efficiency by drawing  
■
Wide Input Range: 3.6V to 34V Operating,  
36V Maximum  
■
2A Maximum Output Current  
Low Ripple Burst Mode® Operation  
■
50μA I at 12V to 3.3V  
Q
IN  
OUT  
Output Ripple < 15mV  
■
■
■
■
■
■
■
■
■
■
Adjustable Switching Frequency: 300kHz to 2.8MHz  
Low Shutdown Current: I < 1μA  
Q
Integrated Boost Diode  
Power Good Flag  
Saturating Switch Design: 0.18Ω On-Resistance  
1.265V Feedback Reference Voltage  
Output Voltage: 1.265V to 20V  
Soft-Start Capability  
Synchronizable Between 275kHz to 475kHz  
Small 10-Pin Thermally Enhanced MSOP and  
(3mm x 3mm) DFN Packages  
bias current from the output when V  
is above 3V.  
OUT  
Shutdown reduces input supply current to less than 1μA  
while a resistor and capacitor on the RUN/SS pin provide a  
controlled output voltage ramp (soft-start). A power good  
flag signals when V  
reaches 90% of the programmed  
OUT  
output voltage. The LT3481 is available in 10-Pin MSOP  
and 3mm x 3mm DFN packages with exposed pads for  
low thermal resistance.  
APPLICATIONS  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
■
Automotive Battery Regulation  
■
Power for Portable Products  
■
Distributed Supply Regulation  
■
Industrial Supplies  
■
Wall Transformer Regulation  
TYPICAL APPLICATION  
3.3V Step-Down Converter  
Efficiency  
V
V
3.3V  
2A  
90  
80  
70  
60  
50  
10000.0  
1000.0  
100.0  
10.0  
IN  
OUT  
4.5V TO  
34V  
V
BD  
IN  
RUN/SS  
BOOST  
OFF ON  
16.2k  
0.47μF  
4.7μH  
V
C
SW  
LT3481  
GND  
4.7μF  
RT  
PG  
330pF  
1.0  
BIAS  
FB  
V
V
= 12V  
IN  
OUT  
324k  
= 3.3V  
40  
30  
0.1  
60.4k  
L = 4.7μ  
F = 800 kHz  
200k  
22μF  
0.01  
0.0001 0.001  
0.01  
0.1  
1
10  
LOAD CURRENT (A)  
3481 TA01  
3481 TA01b  
3481fb  
1
1234567...24

中文翻译

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LT3481IDD 替代型号

型号 品牌 替代类型 描述 数据表
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