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UCC3961N PDF预览

UCC3961N

更新时间: 2024-09-21 02:58:35
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
15页 236K
描述
ADVANVED PRIMARY-SIDE STARTUP CONTROLLER

UCC3961N 数据手册

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U CC 39 61  
C ON TR O LL ER  
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SLUS431A – MAY 2000 – REVISED DECEMBER 2000  
D
Operates with Secondary–Side PWM  
Control  
D
Multi-Mode Overcurrent Protection with  
Restart, Latching, or Cycle-by-Cycle  
Current Limiting  
D
D
D
D
Isolated PWM Command through a Pulse  
Transformer  
D
Programmable Volt-Second Clamp for  
Transformer Reset  
Initial Free-Running Soft-Startup with  
Duty-Cycle Clamping  
D
Undervoltage Lockout with 2-V Hysteresis  
Up to 400-kHz Synchronizable Switching  
Frequency  
D
Low-Current Startup with Optional  
Disconnect  
High-Current FET Drive (1.5-A Sink, 0.75-A  
Source)  
D
D
Programmable Overvoltage and  
Undervoltage Protection  
8–pin Version Also Available (UCC3960)  
typical application diagram  
V
IN  
UCC3961  
OPTIONAL  
DEPLETION  
MODE  
14 UVS START 13  
SWITCH  
UV/OV  
STOP  
VDD 12  
1
8
OVS  
VS  
+
6
REF  
VOLT  
SEC  
CLAMP  
11  
9
OUT  
CS  
4
FB  
FEED  
BACK  
3
5
7
SS  
RT  
SOFT START  
FAULT LATCH DELAY  
CSD  
SD  
2
FREQ  
SET  
AGND PGND 10  
UDG–99039  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2000, Texas Instruments Incorporated  
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POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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