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PDF ( 数据手册 , 数据表 ) TK11121S

零件编号 TK11121S
描述 VOLTAGE REGULATOR WITH ON/OFF SWITCH
制造商 TOKO
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TK11121S 数据手册, 描述, 功能
TK111xxS
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High Voltage Precision at ± 2.0% or ± 60 mV
s Active High On/Off Control
s Very Low Dropout Voltage (85 mV at 30 mA)
s Very Low Noise
s Miniature Package (SOT-23-5)
s Internal Thermal Shutdown
s Short Circuit Protection
s Excellent Ripple Rejection (70 dB @ 1 kHz)
s Reverse Bias Protection
DESCRIPTION
APPLICATIONS
s Battery Powered Systems
s Cellular Telephones
s Pagers
s Personal Communications Equipment
s Portable Instrumentation
s Portable Consumer Equipment
s Radio Control Systems
s Toys
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 µVrms.
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 µA
(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
Voltage Code
Tape/Reel Code
Temp. Code
Package Code
VOLTAGE CODE
20 = 2.0 V
32 = 3.2 V
21 = 2.1 V
33 = 3.3 V
22 = 2.2 V
34 = 3.4 V
23 = 2.3 V
35 = 3.5 V
24 = 2.4 V
36 = 3.6 V
25 = 2.5 V
37 = 3.7 V
27 = 2.7 V
38 = 3.8 V
28 = 2.8 V
39 = 3.9 V
29 = 2.9 V
40 = 4.0 V
30 = 3.0 V
41 = 4.1 V
31 = 3.1 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
Note 1: 2.0 to 2.3 V
available in C
temperature code
(-30 to +80 °C) only
TAPE/REEL CODE
L: Tape Left
PACKAGE CODE
S: SOT-23-5
TEMP. CODE
C: -30 to +80 °C
I: -40 to +85 °C
20P
VIN 5
CONTROL
March 1999 TOKO, Inc.
TK111xxS
CONTROL
GND
NOISE BYPASS
BLOCK DIAGRAM
THERMAL
PROTECTION
BANDGAP
REFERENCE
NOISE
BYPASS
VIN
VOUT
VOUT
GND
Page 1







TK11121S pdf, 数据表
TK111xxS
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C, unless otherwise specified.
OUTPUT VOLTAGE VARIATION
20
10
0 2.8 V
-10
3.0 V
-20
-30
-50
0 50
TA (°C)
100
RIPPLE REJECTION
0
IOUT = 30 mA
-20
CL = 2.2 µF, CN = .01 µF
-40
CL = 4.7 µF, CN = 0.1 µF
-60
-80
-100
0.01
CL = 4.7 µF, CN = 1.0 µF
1 10
f (kHz)
100
OUTPUT NOISE LEVEL VS. CN
250 IOUT = 60 mA
200
150
CL = 3.3µF
100
CL = 10 µF
50
CL = 2.2 µF
0
1 pF 10
100 1000
CN
0.1 µF .1
NOISE SPECTRUM
0
-50
-100
0
CL = 3.3 µF, CN = NONE
CL = 3.3 µF, CN = 0.1 µF
SPECTRUM ANALYZER BACK-
GROUND NOISE
500 k
f (Hz)
1M
LINE VOLTAGE STEP RESPONSE
VOUT +2 V
VOUT +1 V
CN = 0.001 µF
CN = 0.01 µF
0 100 200 300 400
TIME (µs)
LOAD CURRENT STEP RESPONSE 1
100 mA
1 OR 5 mA
CL = 2.2 µF
CN = 0.01 µF
1 TO 100 mA
5 TO 100 mA
0 200 400 600 800
TIME (µs)
LOAD CURRENT STEP RESPONSE 2
50 mA
0 mA
CL = 2.2 µF
CN = 0.01 µF
CL = 4.7 µF
CL = 10 µF
CL = 47 µF
02468
TIME (ms)
Page 8
March 1999 TOKO, Inc.







TK11121S equivalent, schematic
TK111xxS
PACKAGE OUTLINE
SOT-23-5
5
Marking
4
0.7
1 23
e 0.95
e 0.95
+0.15
-0.05
0.4
2.9
e
0.95
e
0.95
e' 1.90
Recommended Mount Pad
0.1 M
0.1
Dimensions are shown in millimeters
Tolerance: x.x = ± 0.2 mm (unless otherwise specified)
± 0.3
2.8
Marking Information
TK111xxS
TK11120S
TK11121S
TK11122S
TK11123S
TK11124S
TK11125S
TK11127S
TK11128S
TK11129S
TK11130S
TK11131S
TK11132S
TK11133S
TK11134S
TK11135S
TK11136S
TK11137S
TK11138S
TK11139S
TK11140S
TK11141S
TK11142S
TK11143S
TK11144S
TK11145S
TK11146S
TK11147S
TK11148S
TK11149S
TK11150S
Product Code
W
Voltage Code
20
21
22
23
24
25
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: (847) 297-0070 Fax: (847) 699-7864
TOKO AMERICA REGIONAL OFFICES
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
Western Regional Office
Toko America, Inc.
2480 North First Street , Suite 260
San Jose, CA 95131
Tel: (408) 432-8281
Fax: (408) 943-9790
Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: (203) 748-6871
Fax: (203) 797-1223
Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
Tel: (719) 528-2200
Fax: (719) 528-2375
Visit our Internet site at http://www.tokoam.com
The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its
products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of
third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.
Page 16
© 1999 Toko, Inc.
All Rights Reserved
IC-xxx-TK111S
0798O0.0K
March 1999 TOKO, Inc.
Printed in the USA










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