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LT1956IFE-5 PDF预览

LT1956IFE-5

更新时间: 2024-01-28 03:54:34
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
28页 288K
描述
High Voltage, 1.5A, 500kHz Step-Down

LT1956IFE-5 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:TSSOP包装说明:TSSOP, TSSOP16,.25
针数:16Reach Compliance Code: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
最大输入电压:60 V最小输入电压:5.5 V
标称输入电压:15 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e3长度:5 mm
湿度敏感等级:1功能数量:1
端子数量:16最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:3 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, 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:1.1 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:570 kHz
技术:BIPOLAR温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:4.4 mm
Base Number Matches:1

LT1956IFE-5 数据手册

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LT1956/LT1956-5  
High Voltage, 1.5A,  
500kHz Step-Down  
Switching Regulators  
U
FEATURES  
DESCRIPTIO  
The LT®1956/LT1956-5 are 500kHz monolithic buck  
switching regulators with an input voltage capability up to  
60V. Ahighefficiency1.5A, 0.2switchisincludedonthe  
diealongwithallthenecessaryoscillator,controlandlogic  
circuitry. A current mode architecture provides fast tran-  
sient response and good loop stability.  
Wide Input Range: 5.5V to 60V  
1.5A Peak Switch Current  
Small 16-Pin SSOP or Thermally Enhanced  
TSSOP Package  
Saturating Switch Design: 0.2Ω  
Peak Switch Current Maintained Over  
Full Duty Cycle Range  
Special design techniques and a new high voltage process  
achieve high efficiency over a wide input range. Efficiency  
ismaintainedoverawideoutputcurrentrangebyusingthe  
output to bias the circuitry and by utilizing a supply boost  
capacitor to saturate the power switch. Patented circuitry  
maintains peak switch current over the full duty cycle  
range*.Ashutdownpinreducessupplycurrentto25µAand  
the device can be externally synchronized from 580kHz to  
700kHz with a logic level input.  
Constant 500kHz Switching Frequency  
Effective Supply Current: 2.5mA  
Shutdown Current: 25µA  
1.2V Feedback Reference (LT1956)  
5V Fixed Output (LT1956-5)  
Easily Synchronizable  
Cycle-by-Cycle CUurrent Limiting  
APPLICATIO S  
The LT1956/LT1956-5 are available in fused-lead 16-pin  
SSOP and thermally enhanced TSSOP packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
*U.S. PATENT NO. 6,498,466  
High Voltage, Industrial and Automotive  
Portable Computers  
Battery-Powered Systems  
Battery Chargers  
Distributed Power Systems  
U
TYPICAL APPLICATIO  
5V Buck Converter  
Efficiency vs Load Current  
MMSD914TI  
100  
V
= 12V  
IN  
L = 18µH  
6
V
OUT  
= 5V  
0.1µF  
V
IN  
90  
80  
70  
60  
50  
BOOST  
10µH  
V
5V  
1A  
OUT  
12V  
(TRANSIENTS  
TO 60V)  
4
2
V
IN  
SW  
V
OUT  
= 3.3V  
2.2µF†  
100V  
CERAMIC  
10MQ060N  
LT1956-5  
22µF  
6.3V  
CERAMIC  
15  
14  
10  
12  
SHDN  
BIAS  
SYNC  
GND  
FB  
V
C
1, 8, 9, 16 11  
0
0.25  
0.50  
0.75  
1.00  
1.25  
220pF  
4.7k  
LOAD CURRENT (A)  
1956 TA02  
4700pF  
UNITED CHEMI-CON THCS50EZA225ZT  
1956 TA01  
1956f  
1

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