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PDF TK71250 Data sheet ( Hoja de datos )
| Número de pieza | TK71250 | |
| Descripción | LOW DROPOUT REGULATOR | |
| Fabricantes | TOKO | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TK71250 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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FEATURES
s Low Dropout Voltage
s Low Quiescent Current
s Very Stable Output
s Low Noise (35 µVrms)
s Miniature Package (SOT-25)
TK712xx
LOW DROPOUT REGULATOR
APPLICATIONS
s Battery Powered Systems
s Portable Consumer Equipment
s Cordless Telephones
s Personal Communications Equipment
s Radio Control Systems
s Toys
s Low Voltage Systems
DESCRIPTION
TK712xx is a low dropout, linear regulator. Since a PNP
power transistor is used, dropout voltage is very low,
making it possible to maintain stable output voltage even
as the battery decreases. This allows longer battery life.
The TK712xx has a noise bypass pin available for noise
reduction.
The TK712xx is available in a miniature SOT-25 surface
mount package.
TK712xx
NOISE
BYPASS
20P
GND
GND
VIN
VOUT
ORDERING INFORMATION
TK712 M
VoltageCode
Tape/Reel Code
VOLTAGE CODE
20 = 2.0 V
35 = 3.5 V
25 = 2.5 V
40 = 4.0 V
28 = 2.8 V
45 = 4.5 V
30 = 3.0 V
50 = 5.0 V
33 = 3.3 V
TAPE/REEL CODE
TL: Tape Left
VIN
NOISE
BYPASS
January 1999 TOKO, Inc.
BLOCK DIAGRAM
THERMAL
PROTECTION
VOUT
BANDGAP
REFERENCE
GND
GND
Page 1
1 page  
TK712xx
TK71235 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 4.1 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
IQ
VOUT
VDROP
IOUT
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
VIN = 4.1 V, IOUT = 0 mA
VIN = 3.0 V, IOUT = 0 mA
VIN = 4.1 V, IOUT = 10 mA
IOUT = 30 mA
IGND Ground Current
VIN = 4.1 V, IOUT = 30 mA
Line Reg Line Regulation
VIN = 4.1 to 14.0 V
Load Reg Load Regulation
IOUT = 1 to 60 mA
RR Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
Vref
Noise Bypass Terminal
Voltage
∆VOUT /∆T Temperature Coefficient
MIN
3.39
100
TYP
130
1.4
3.50
100
160
1.5
10
20
63
1.27
0.2
MAX
300
3.0
3.61
200
3.5
30
40
UNITS
µA
mA
V
mV
mA
mA
mV
mV
dB
V
mV/° C
TK71240 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 4.6 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
IQ
VOUT
VDROP
IOUT
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
VIN = 4.6 V, IOUT = 0 mA
VIN = 3.5 V, IOUT = 0 mA
VIN = 4.6 V, IOUT = 10 mA
IOUT = 30 mA
IGND Ground Current
VIN = 4.6 V, IOUT = 30 mA
Line Reg Line Regulation
VIN = 4.6 to 14.0 V
Load Reg Load Regulation
IOUT = 1 to 60 mA
RR Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
Vref
Noise Bypass Terminal
Voltage
∆VOUT /∆T Temperature Coefficient
MIN
3.88
100
TYP
130
1.4
4.00
100
160
1.5
10
20
63
1.27
0.2
MAX
300
3.0
4.12
200
3.5
30
40
UNITS
µA
mA
V
mV
mA
mA
mV
mV
dB
V
mV/° C
January 1999 TOKO, Inc.
Page 5
5 Page 
TK712xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71230
3.05
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
2
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
150
IOUT = 0 mA
3.00 1
100
2.95
0
50
IOUT (mA)
100
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
500
400
300
200
100
0
0 50
IOUT (mA)
TK71233
3.35
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
100
3.30
0
0 5 10
VIN (V)
SHORT CIRCUIT PROTECTION
5
4
3
2
1
0
0 100 200
IOUT (mA)
QUIESCENT CURRENT VS.
INPUT VOLTAGE
2
IOUT = 0 mA
1
50
-50
0 50
TA (°C)
100
3.05
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
3.00
2.95
-50
0 50
TA (°C)
100
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
150
100
3.25
0
50
IOUT (mA)
0
100 0
January 1999 TOKO, Inc.
5
VIN (V)
50
10 -50
0 50
TA (°C)
100
Page 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TK71250.PDF ] | |
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