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LT1506IS8-3.3 PDF预览

LT1506IS8-3.3

更新时间: 2024-11-10 22:55:51
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
24页 420K
描述
4.5A, 500kHz Step-Down Switching Regulator

LT1506IS8-3.3 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:0.150 INCH, PLASTIC, SOP-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.07Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PHASE-SHIFT CONTROL最大输入电压:15 V
最小输入电压:4.3 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e0
长度:4.9025 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:8.5 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):235认证状态:Not Qualified
座面最大高度:1.752 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:560 kHz技术:BIPOLAR
温度等级:AUTOMOTIVE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处于峰值回流温度下的最长时间:20
宽度:3.899 mmBase Number Matches:1

LT1506IS8-3.3 数据手册

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LT1506  
4.5A, 500kHz Step-Down  
Switching Regulator  
U
DESCRIPTION  
FEATURES  
TheLT®1506isa500kHzmonolithicbuckmodeswitching  
regulatorfunctionallyidenticaltotheLT1374butoptimized  
for lower input voltage applications. It will operate over a  
4V to 15V input range compared with 5.5V to 25V for the  
LT1374. A 4.5A switch is included on the die along with all  
the necessary oscillator, control and logic circuitry. High  
switchingfrequencyallowsaconsiderablereductioninthe  
sizeofexternalcomponents.Thetopologyiscurrentmode  
for fast transient response and good loop stability. Both  
fixed output voltage and adjustable parts are available.  
Constant 500kHz Switching Frequency  
Easily Synchronizable  
Operates with Input as Low as 4V  
Uses All Surface Mount Components  
Inductor Size Reduced to 1.8µH  
Saturating Switch Design: 0.07Ω  
Shutdown Current: 20µA  
Cycle-by-Cycle Current Limiting  
U
APPLICATIONS  
Aspecialhighspeedbipolarprocessandnewdesigntech-  
niquesachievehighefficiencyathighswitchingfrequency.  
Efficiency is maintained over a wide output current range  
by keeping quiescent supply current to 4mA and by utiliz-  
ing a supply boost capacitor to saturate the power switch.  
Portable Computers  
Battery-Powered Systems  
Battery Charger  
Distributed Power  
The LT1506 fits into standard 7-pin DD and fused lead  
SO-8packages.Fullcycle-by-cycleshort-circuitprotection  
and thermal shutdown are provided. Standard surface  
mount external parts are used, including the inductor and  
capacitors. There is the optional function of shutdown or  
synchronization.Ashutdownsignalreducessupplycurrent  
to20µA.Synchronizationallowsanexternallogiclevelsig-  
naltoincreasetheinternaloscillatorfrom580kHzto1MHz.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Efficiency vs Load Current  
90  
V
V
= 3.3V  
5V to 3.3V Down Converter  
OUT  
IN  
= 5V  
L = 10µH  
D2  
1N914  
85  
80  
75  
70  
C2  
0.68µF  
L1  
5µH  
OUTPUT  
3.3V  
BOOST  
INPUT  
5V  
V
V
SW  
IN  
4A  
C3  
OPEN  
OR  
HIGH  
= ON  
LT1506-3.3  
+
10µF TO  
50µF  
CERAMIC  
SHDN  
GND  
SENSE  
C
V
C1  
+
100µF, 10V  
SOLID  
TANTALUM  
C
D1  
MBRS330T3  
C
1.5nF  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0  
LOAD CURRENT (A)  
1506 TA01  
1506 TA02  
1

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