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TK11221A

更新时间： 2024-11-29 22:34:23
品牌 Logo 应用领域
TOKO 稳压器开关
页数 文件大小 规格书
34页 385K
描述
VOLTAGE REGULATOR WITH ON/OFF SWITCH

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中文翻译

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TK11221A 数据手册

 浏览型号TK11221A的Datasheet PDF文件第2页浏览型号TK11221A的Datasheet PDF文件第3页浏览型号TK11221A的Datasheet PDF文件第4页浏览型号TK11221A的Datasheet PDF文件第5页浏览型号TK11221A的Datasheet PDF文件第6页浏览型号TK11221A的Datasheet PDF文件第7页 
TK112xxA  
VOLTAGE REGULATOR WITH ON/OFF SWITCH  
APPLICATIONS  
FEATURES  
■ Battery Powered Systems  
■ Cellular Telephones  
■ High Voltage Precision at ± 2.4%  
■ Active High On/Off Control  
■ Very Low Dropout Voltage 80 mV at 30 mA  
■ Very Low Noise  
■ Pagers  
■ Personal Communications Equipment  
■ Portable Instrumentation  
■ Portable Consumer Equipment  
■ Radio Control Systems  
■ Toys  
■ Very Small SOT-23L or SOT-89-5 Surface Mount  
Packages  
■ Internal Thermal Shutdown  
■ Short Circuit Protection  
■ Low Voltage Systems  
DESCRIPTION  
The TK112xxA is a low dropout linear regulator with a built-  
in electronic switch. The internal switch can be controlled  
by TTL or CMOS logic levels. The device is in the ON state  
when the control pin is pulled to a logic high level. An  
external capacitor can be connected to the noise bypass  
pin to lower the output noise level to 30 µVrms.  
TK112XXA  
CONTROL  
GND  
1
2
3
6
5
4
V
IN  
P50  
GND  
An internal PNP pass transistor is used to achieve a low  
dropout voltage of 70 mV (typ.) at 30 mA load current. The  
TK112xxA has a very low quiescent current of 180 µA at no  
load and 1 mA with a 30 mA load. The standby current is  
typically 100 nA. The internal thermal shutdown circuitry  
limits the junction temperature to below 150 °C. The load  
currentisinternallymonitoredandthedevicewillshutdown  
in the presence of a short circuit or overcurrent condition at  
the output.  
NOISE  
BYPASS  
V
OUT  
TK112xxA • PO  
NOISE  
BYPASS  
1
6
5
4
V
OUT  
GND  
2
3
GND  
V
CONTROL  
IN  
The TK112xxA is available in either 6 pin SOT-23L or 5 pin  
SOT-89-5 surface mount packages.  
BLOCK DIAGRAM  
ORDERING INFORMATION  
S
S
S
S
V
IN  
V
OUT  
TK112  
A
S
THERMAL  
CONTROL  
PROTECTION  
Tape/Reel Code  
Package Code  
S
S
Voltage Code  
S
S
–
+
+
–
S
TAPE/REEL CODE  
BX : Bulk/Bag  
TL : Tape Left  
(SOT-23L)  
TB : Tape Bottom  
(SOT-89-5)  
VOLTAGE CODE  
PACKAGE CODE  
M: SOT-23L  
U: SOT-89-5  
S
S
S
S
S
35 = 3.5 V*  
36 = 3.6 V  
20 = 2.0 V*  
21 = 2.1 V  
22 = 2.22 V*  
25 = 2.5 V*  
28 = 2.8 V*  
29 = 2.9 V  
30 = 3.0 V*  
31 = 3.1 V*  
33 = 3.3 V*  
BANDGAP  
REFERENCE  
38 = 3.8 V  
40 = 4.0 V*  
42 = 4.2 V  
45 = 4.5 V*  
48 = 4.8 V*  
49 = 4.9 V  
50 = 5.0 V*  
55 = 5.5 V  
S
S
S
S
S
GND  
NOISE BYPASS  
* Indicates voltage is available in a SOT-89-5 package.  
1-4-96  
January, 1996 TOKO, Inc.  
Page 1  
1234567...34

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