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UCC2809PW-2 PDF预览

UCC2809PW-2

更新时间： 2024-11-24 03:15:23
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
11页 162K
描述
Economy Primary Side Controller

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中文翻译

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UCC2809PW-2 数据手册

 浏览型号UCC2809PW-2的Datasheet PDF文件第2页浏览型号UCC2809PW-2的Datasheet PDF文件第3页浏览型号UCC2809PW-2的Datasheet PDF文件第4页浏览型号UCC2809PW-2的Datasheet PDF文件第5页浏览型号UCC2809PW-2的Datasheet PDF文件第6页浏览型号UCC2809PW-2的Datasheet PDF文件第7页 
application  
INFO  
UCC1809-1/-2  
UCC2809-1/-2  
UCC3809-1/-2  
available  
Economy Primary Side Controller  
FEATURES  
DESCRIPTION  
• User Programmable Soft Start With  
Active Low Shutdown  
The UCC3809 family of BCDMOS economy low power integrated circuits  
contains all the control and drive circuitry required for off-line and isolated  
DC-to-DC fixed frequency current mode switching power supplies with  
minimal external parts count. Internally implemented circuits include  
undervoltage lockout featuring startup current less than 100µA, a user ac-  
cessible voltage reference, logic to ensure latched operation, a PWM com-  
parator, and a totem pole output stage to sink or source peak current. The  
output stage, suitable for driving N-Channel MOSFETs, is low in the off  
state.  
• User Programmable Maximum Duty  
Cycle  
• Accessible 5V Reference  
• Undervoltage Lockout  
• Operation to 1MHz  
• 0.4A Source/0.8A Sink FET Driver  
• Low 100µA Startup Current  
Oscillator frequency and maximum duty cycle are programmed with two  
resistors and a capacitor. The UCC3809 family also features full cycle soft  
start.  
The family has UVLO thresholds and hysteresis levels for off-line and  
DC-to-DC systems as shown in the table to the left.  
PART  
TURN ON  
TURN OFF  
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP  
(N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and  
MSOP packages make the device ideal for applications where board  
space and height are at a premium.  
NUMBER THRESHOLD THRESHOLD  
UCCX809-1  
UCCX809-2  
10V  
15V  
8V  
8V  
TYPICAL APPLICATION DIAGRAM  
R
START  
V
IN  
FB  
1
1V  
–
+
1V  
REF  
NOISE  
FILTER  
+5V  
+
–
5V  
REF  
8
FEEDBACK  
C
6µA  
SS  
REF  
2
–
+
V
SLOPE  
COMP  
OUT  
CURRENT  
SENSE  
0.5V  
VDD  
C
SS  
7
–
+
15/8V  
10/8V  
DISABLE  
UVLO  
17.5V  
C
VDD  
RT1  
RT2  
PWM  
LATCH  
3
4
OUT  
GND  
R
Q
S
CLK  
OSC  
6
5
–
+
V
REF  
C
T
UDG-99036  
SLUS166B - NOVEMBER 1999 - REVISED NOVEMBER 2004  
1234567...11

中文翻译

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UCC2809PW-2 替代型号

型号 品牌 替代类型 描述 数据表
UCC2809PW-1 TI

完全替代

 Economy Primary Side Controller
UCC3809PW-2 TI

类似代替

 Economy Primary Side Controller
UCC3809PW-1 TI

类似代替

 Economy Primary Side Controller

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