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參數資料
| 型號： | TK11121S |
| 廠商： | TOKO Inc. |
| 英文描述： | VOLTAGE REGULATOR WITH ON/OFF SWITCH |
| 中文描述： | 調壓器ON / OFF開關 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 84K |
| 代理商： | TK11121S |
March 1999 TOKO, Inc.
Page 1
TK111xxS
FEATURES
I
High Voltage Precision at
±
2.0% or
±
60 mV
I
Active High On/Off Control
I
Very Low Dropout Voltage (85 mV at 30 mA)
I
Very Low Noise
I
Miniature Package (SOT-23-5)
I
Internal Thermal Shutdown
I
Short Circuit Protection
I
Excellent Ripple Rejection (70 dB @ 1 kHz)
I
Reverse Bias Protection
APPLICATIONS
I
Battery Powered Systems
I
Cellular Telephones
I
Pagers
I
Personal Communications Equipment
I
Portable Instrumentation
I
Portable Consumer Equipment
I
Radio Control Systems
I
Toys
BLOCK DIAGRAM
TK111xxS
DESCRIPTION
The TK111xxS 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
μ
Vrms.
An internal PNP pass transistor is used to achieve a low
dropout voltage of 85 mV (typ.) at 30 mA load current. The
TK111xxS has a very low quiescent current of 140
μ
A
(typ.) at no load . The standby current is 100 nA maximum.
The internal thermal shut down circuitry limits the junction
temperature to below 150
°
C. The load current is internally
monitored and the device will shut down in the presence of
a short circuit or overcurrent condition at the output.
The TK111xxS is available in a miniature SOT-23-5 surface
mount package.
ORDERING INFORMATION
TK111 S L
TAPE/REEL CODE
L: Tape Left
PACKAGE CODE
S: SOT-23-5
Tape/Reel Code
Temp. Code
Voltage Code
VOLTAGE CODE
20 = 2.0 V
21 = 2.1 V
22 = 2.2 V
23 = 2.3 V
24 = 2.4 V
25 = 2.5 V
27 = 2.7 V
28 = 2.8 V
29 = 2.9 V
30 = 3.0 V
31 = 3.1 V
32 = 3.2 V
33 = 3.3 V
34 = 3.4 V
35 = 3.5 V
36 = 3.6 V
37 = 3.7 V
38 = 3.8 V
39 = 3.9 V
40 = 4.0 V
41 = 4.1 V
42 = 4.2 V
43 = 4.3 V
44 = 4.4 V
45 = 4.5 V
46 = 4.6 V
47 = 4.7 V
48 = 4.8 V
49 = 4.9 V
50 = 5.0 V
Package Code
Note 1:
2.0 to 2.3 V
available in C
°
C) only
TEMP. CODE
C: -30 to +80
°
C
I: -40 to +85
°
C
20P
GND
CONTROL
VOUT
VIN
NOISE BYPASS
NOISE
VIN
VOUT
PTHERMAL
BANDGAP
CONTROL
GND
5
VOLTAGE REGULATOR WITH ON/OFF SWITCH
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