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PDF TK71560 Data sheet ( Hoja de datos )
| Número de pieza | TK71560 | |
| Descripción | LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | TOKO | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TK71560 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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FEATURES
s High Voltage Precision at ± 2.0% or ± 60 mV
s Very Low Quiescent Current
s Very Low Dropout Voltage
s Reverse Bias Protection
s Miniature Package (SOT-23-3)
s Short Circuit Protection
s High Ripple Rejection
DESCRIPTION
TK715xx
LOW DROPOUT VOLTAGE REGULATOR
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
s Low Voltage Systems
The TK715xx is a low dropout linear regulator housed in a
small SOT-23-3 package, rated at 350 mW. An internal
PNP transistor is used to achieve a low dropout voltage of
105 mV (typ.) at 50 mA load current. This device offers high
precision output voltage of ± 2.0 % or ± 60 mV. The
TK715xx has a very low quiescent current of 25 µA (typ.)
at no load. The low quiescent current and dropout voltage
make this part ideal for battery powered applications. The
internal reverse bias protection eliminates the requirement
for a reverse voltage protection diode, saving cost and
board space. The high 64 dB ripple rejection and low noise
provide enhanced performance for critical applications.
TK715xxS
20P
GND
VIN
VOUT
ORDERING INFORMATION
TK715 SCL
Voltage Code
Tape/ Reel Code
Temp. Code
Package Code
VOLTAGE CODE
19 = 1.9 V
37 = 3.7 V
20 = 2.0 V
38 = 3.8 V
21 = 2.1 V
39 = 3.9 V
22 = 2.2 V
40 = 4.0 V
23 = 2.3 V
41 = 4.1 V
24 = 2.4 V
42 = 4.2 V
25 = 2.5 V
43 = 4.3 V
26 = 2.6 V
44 = 4.4 V
27 = 2.7 V
45 = 4.5 V
28 = 2.8 V
46 = 4.6 V
29 = 2.9 V
47 = 4.7 V
30 = 3.0 V
48 = 4.8 V
31 = 3.1 V
49 = 4.9 V
32 = 3.2 V
50 = 5.0 V
33 = 3.3 V
60 = 6.0 V
34 = 3.4 V
70 = 7.0 V
35 = 3.5 V
80 = 8.0 V
36 = 3.6 V
90 = 9.0 V
TEMPERATURE CODE
C -30 to +80 C
PACKAGE CODE
S : SOT-23-3
TAPE/REEL CODE
L: Tape Left
January 1999 TOKO, Inc.
VIN
BLOCK DIAGRAM
THERMAL
PROTECTION
-
+
BANDGAP
REFERENCE
GND
VOUT
-
+
Page 1
1 page  
VIN
+
_
TK715xx
TEST CIRCUIT
IIN
VIN
+
CIN
0.1 µF
VOUT +
CL
2.2 µF
IOUT
VOUT
GND
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C, unless otherwise specified.
LOAD REGULATION
SHORT CIRCUIT PROTECTION
OUTPUT VOLTAGE VS.
INPUT VOLTAGE
5 VOUT TYPICAL
VOUT TYPICAL
4
IOUT = 0 mA
IOUT = 30 mA
IOUT = 60 mA
3
2 IOUT = 90 mA
1
0
0
50 100 0
100 200 0 VIN = VOUT
IOUT (mA)
IOUT (mA)
VIN (V) (50 mV/DIV)
LINE REGULATION
VOUT TYPICAL
0 10 20
VIN (V)
REVERSE BIAS CURRENT RANGE
(VIN = 0 V)
100
80
60 VOUT = 2.0 V
40
20
0 VOUT = 8.0 V
0 5 10
VREV (V)
QUIESCENT CURRENT VS.
INPUT VOLTAGE
2 IOUT = 0 mA
1
VOUT = 3 V
0
0 5 10
VIN (V)
January 1999 TOKO, Inc.
Page 5
5 Page 
TK715xx
APPLICATION INFORMATION (CONT.)
In general, the capacitor should be at least 1 µF and be rated for the actual ambient operating temperature range. The
table below shows typical characteristics for several types and values of capacitance. Please note that the ESR varies
widely depending upon manufacturer, type, size, and material.
ESR
Capacitance
1.0 µF
2.2 µF
3.3 µF
10 µF
Aluminum
Capacitor
2.4 Ω
2.0 Ω
4.6 Ω
1.4 Ω
Tantalum
Capacitor
2.3 Ω
1.9 Ω
1.0 Ω
0.5 Ω
Note: ESR is measured at 10 kHz.
Ceramic
Capacitor
0.140 Ω
0.059 Ω
0.049 Ω
0.025 Ω
BOARD LAYOUT
Copper pattern should be as large as possible. Power dissipation is 350 mW for SOT-23-3. A low ESR capacitor is
recommended. For low temperature operation, select a capacitor with a low ESR at the lowest operating temperature
to prevent oscillation, degradation of ripple rejection and increase in noise. The minimum recommended capacitance is
2.2 µF.
The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode. This saves both
cost and board space.
VIN GND VOUT
++
January 1999 TOKO, Inc.
SOT-23-3 BOARD LAYOUT
Page 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet TK71560.PDF ] | |
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