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LTC3721EGN-1 PDF预览

LTC3721EGN-1

更新时间： 2024-11-21 03:39:39
品牌 Logo 应用领域
Linear Systems 开关光电二极管控制器
页数 文件大小 规格书
16页 181K
描述
Push-Pull PWM Controller

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中文翻译

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LTC3721EGN-1 数据手册

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LTC3721-1  
Push-Pull PWM Controller  
U
DESCRIPTIO  
FEATURES  
The LTC®3721-1 push-pull PWM controller provides all of  
the control and protection functions necessary for com-  
pact and highly efficient, isolated power converters. High  
integration minimizes external component count, while  
preserving design flexibility.  
■
High Efficiency Push-Pull PWM  
■
1.5A Sink, 1A Source Output Drivers  
■
Adjustable Push-Pull Dead-Time  
■
Adjustable System Undervoltage Lockout and  
Hysteresis  
■
Adjustable Leading Edge Blanking  
The robust push-pull output stages switch at half the  
oscillator frequency. Dead-time is independently pro-  
grammedwithanexternalresistor. AUVLOprograminput  
providesprecisesystemturn-onandturnoffvoltages.The  
LTC3721-1 features peak current mode control with pro-  
grammable slope compensation and leading edge  
blanking.  
■
Low Start-Up and Quiescent Currents  
■
Current Mode Operation  
■
Single Resistor Slope Compensation  
■
VCC UVLO and 25mA Shunt Regulator  
■
Programmable Fixed Frequency Operation to 1MHz  
■
Soft-Start, Cycle-by-Cycle Current Limiting and  
Hiccup Mode Short-Circuit Protection  
5V, 15mA Low Dropout Regulator  
■
■
The LTC3721-1 features extremely low operating and  
start-up currents and reliable short-circuit and  
overtemperature protection. The LTC3721-1 is offered in  
16-pin SSOP and (4mm × 4mm) QFN packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
16-Pin SSOP and (4mm × 4mm) QFN Packages  
U
APPLICATIO S  
■
Telecommunications, Infrastructure Power Systems  
■
Distributed Power Architectures  
■
Server Power Supplies  
High Density Power Modules  
■
U
TYPICAL APPLICATIO  
Isolated Push-Pull Converter  
V
V
IN  
OUT  
+
UVLO  
DRVA  
FROM  
AUXILIARY  
WINDING  
DRVB  
CS  
V
CC  
DPRG  
LTC3721-1  
R
CS  
V
REF  
C
T
V
REF  
R
LEB  
V
OUT  
V
OUT  
SS  
COMP  
+
V
R
TOP  
COLL  
R
REF  
LT1431  
GND-F GND-S  
FB GND  
COMP  
R
MID  
37211 TA01  
sn37211 37211fs  
1
1234567...16

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