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LT1374CR-5SYNC#TRPBF PDF预览

LT1374CR-5SYNC#TRPBF

更新时间: 2024-09-17 13:09:35
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
页数 文件大小 规格书
28页 264K
描述
IC 8.5 A SWITCHING REGULATOR, 560 kHz SWITCHING FREQ-MAX, PSSO7, PLASTIC, D2PAK-7, Switching Regulator or Controller

LT1374CR-5SYNC#TRPBF 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Transferred零件包装代码:D2PAK
包装说明:PLASTIC, D2PAK-7针数:7
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.08
Is Samacsys:N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:25 V最小输入电压:5 V
标称输入电压:15 VJESD-30 代码:R-PSSO-G7
JESD-609代码:e3长度:10.2235 mm
湿度敏感等级:1功能数量:1
端子数量:7最高工作温度:125 °C
最低工作温度:最大输出电流:8.5 A
封装主体材料:PLASTIC/EPOXY封装代码:TO-263
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:4.572 mm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:OTHER
端子面层:Matte Tin (Sn) - with Nickel (Ni) barrier端子形式:GULL WING
端子节距:1.27 mm端子位置:SINGLE
处于峰值回流温度下的最长时间:30宽度:8.89 mm
Base Number Matches:1

LT1374CR-5SYNC#TRPBF 数据手册

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LT1374  
4.5A, 500kHz Step-Down  
Switching Regulator  
U
FEATURES  
DESCRIPTIO  
Constant 500kHz Switching Frequency  
TheLT®1374isa500kHzmonolithicbuckmodeswitching  
regulator. A 4.5A switch is included on the die along with  
allthenecessaryoscillator,controlandlogiccircuitry.High  
switchingfrequencyallowsaconsiderablereductioninthe  
sizeofexternalcomponents.Thetopologyiscurrentmode  
for fast transient response and good loop stability. Both  
fixed output voltage and adjustable parts are available.  
Easily Synchronizable  
Uses All Surface Mount Components  
Inductor Size Reduced to 1.8µH  
Saturating Switch Design: 0.07Ω  
Effective Supply Current: 2.5mA  
Shutdown Current: 20µA  
Cycle-by-Cycle Current Limiting  
Aspecialhighspeedbipolarprocessandnewdesigntech-  
niquesachievehighefficiencyathighswitchingfrequency.  
Efficiency is maintained over a wide output current range  
by using the output to bias the circuitry and by utilizing a  
supply boost capacitor to saturate the power switch.  
U
APPLICATIO S  
Portable Computers  
Battery-Powered Systems  
The LT1374 fits into standard 7-pin DD, TO-220 and fused  
lead SO-8 packages. Full cycle-by-cycle short-circuit  
protection 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. A shutdown signal reduces  
supply current to 20µA. Synchronization allows an exter-  
nallogiclevelsignaltoincreasetheinternaloscillatorfrom  
Battery Chargers  
Distributed Power  
580kHz to 1MHz.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
5V Buck Converter  
Efficiency vs Load Current  
D2  
1N914  
100  
V
V
= 5V  
OUT  
IN  
= 10V  
95  
90  
85  
80  
75  
70  
L = 10µH  
C2  
0.27µF  
L1**  
5µH  
BOOST  
OUTPUT**  
5V, 4.25A  
INPUT  
V
V
IN  
SW  
6V TO 25V  
+
C3*  
LT1374-5 BIAS  
10µF TO  
50µF  
DEFAULT  
= ON  
SHDN  
SENSE  
GND  
V
C
C1  
+
D1  
MBRS330T3  
100µF, 10V  
SOLID  
C
C
1.5nF  
TANTALUM  
* RIPPLE CURRENT RATING I /2  
OUT  
1374 TA01  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0  
LOAD CURRENT (A)  
** INCREASE L1 TO 10µH FOR LOAD CURRENTS ABOVE 3.5A AND TO 20µH ABOVE 4A  
SEE APPLICATIONS INFORMATION  
1374 TA02  
1

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