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LT3781EG#TRPBF PDF预览

LT3781EG#TRPBF

更新时间： 2024-09-24 13:09:39
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
28页 320K
描述
LT3781 - Bootstrap Start Dual Transistor Synchronous Forward Controller; Package: SSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LT3781EG#TRPBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：SSOP包装说明：SOP,
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.19Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
标称输入电压：12 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e3湿度敏感等级：1
功能数量：1端子数量：20
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SOP
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
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：700 kHz温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子位置：DUAL处于峰值回流温度下的最长时间：30
Base Number Matches：1

LT3781EG#TRPBF 数据手册

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Final Electrical Specifications  
LTC3722-1/LTC3722-2  
Synchronous Dual Mode  
Phase Modulated  
Full Bridge Controllers  
February 2003  
U
DESCRIPTIO  
FEATURES  
TheLTC®3722-1/LTC3722-2phaseshiftPWMcontrollers  
provide all of the control and protection functions neces-  
sary to implement a high efficiency, zero voltage switched  
(ZVS), full bridge power converter. Adaptive ZVS circuitry  
delays the turn-on signals for each MOSFET independent  
of internal and external component tolerances. Manual  
delay set mode enables secondary side control operation  
or direct control of switch turn-on delays.  
■
Adaptive or Manual Delay Control for Zero Voltage  
Switching Operation  
■
Adjustable Synchronous Rectification Timing for  
Highest Efficiency  
Adjustable Maximum ZVS Delay  
■
■
Adjustable System Undervoltage Lockout and  
Hysteresis  
■
Programmable Leading Edge Blanking  
■
Very Low Start-Up and Quiescent Currents  
The LTC3722-1/LTC3722-2 feature adjustable synchro-  
nous rectifier timing for optimal efficiency. A UVLO pro-  
gram input provides accurate system turn-on and turn-off  
voltages. The LTC3722-1 features peak current mode  
controlwithprogrammableslopecompensationandlead-  
ing edge blanking, while the LTC3722-2 employs voltage  
mode control with voltage feedforward capability.  
■
Current Mode (LTC3722-1) or Voltage Mode  
(LTC3722-2) Operation  
■
Programmable Slope Compensation  
■
VCC UVLO and 25mA Shunt Regulator  
■
50mA Output Drivers  
■
Soft-Start, Cycle-by-Cycle Current Limiting and  
Hiccup Mode Short-Circuit Protection  
■
The LTC3722-1/LTC3722-2 feature extremely low operat-  
ingandstart-upcurrents. Bothdevicesincludeafullrange  
of protection features and are available in the 24-pin  
surface mount (GN) package.  
5V, 15mA Low DUropout Regulator  
APPLICATIO S  
■
Telecommunications, Infrastructure Power Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Distributed Power Architectures  
Server Power Supplies  
■
U
TYPICAL APPLICATIO  
V
IN  
36V TO 72V  
C
IN  
R1  
12VOUT, 240W Converter Efficiency  
95  
36V  
IN  
MA  
MC  
MD  
T1  
LTC3722  
90  
85  
80  
75  
L1  
L2  
48V  
V
IN  
OUT  
12V  
72V  
IN  
C
OUT  
MB  
1/2  
U1  
1/2  
U1  
U2  
ME  
RCS  
T2  
C1  
MF  
0
2
4
6
8
10 12 14 16 18 20  
CURRENT (A)  
3722 • TA01A  
U1, U2: LTC1693-1 DUAL GATE DRIVER  
3722 TA01b  
372212i  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
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中文翻译

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LT3781EG#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3781EG#PBF Linear

完全替代

 LT3781 - Bootstrap Start Dual Transistor Synchronous Forward Controller; Package: SSOP; Pi

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