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LT1374CR-SYNC#TR PDF预览

LT1374CR-SYNC#TR

更新时间: 2024-11-07 13:09:35
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
32页 297K
描述
IC 8.5 A SWITCHING REGULATOR, 560 kHz SWITCHING FREQ-MAX, PSSO7, PLASTIC, D2PAK-7, Switching Regulator or Controller

LT1374CR-SYNC#TR 技术参数

是否无铅:含铅是否Rohs认证:不符合
生命周期:Transferred零件包装代码:D2PAK
包装说明:TO-263,针数:7
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.06
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:e0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):235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:Tin/Lead (Sn/Pb) - 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:20宽度:8.89 mm
Base Number Matches:1

LT1374CR-SYNC#TR 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.  
High Power 16-Pin TSSOP Package Available  
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  
Easily Synchronizable  
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  
TheLT1374isavailableinstandard7-pinDD,TO-220,fused  
lead SO-8 and 16-pin exposed pad TSSOP packages. Full  
cycle-by-cycle short-circuit protection and thermal shut-  
downareprovided.Standardsurfacemountexternalparts  
may be used, including the inductor and capacitors. There  
is the optional function of shutdown or synchronization. A  
shutdownsignalreducessupplycurrentto20µA.Synchro-  
nizationallowsanexternallogiclevelsignaltoincreasethe  
Battery-Powered Systems  
Battery Chargers  
Distributed Power  
internal oscillator from 580kHz to 1MHz.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
5V Buck Converter  
Efficiency vs Load Current  
D2  
100  
CMDSH3 OR FMMD914  
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  
100µF, 10V  
SOLID  
C
C
MBRS330T3  
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  
1374fb  
1

LT1374CR-SYNC#TR 替代型号

型号 品牌 替代类型 描述 数据表
LT1374IR-SYNC Linear

完全替代

4.5A, 500kHz Step-Down Switching Regulator

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