TK71340MCTL [TOKO]
暂无描述;
| 型号： | TK71340MCTL |
| 厂家： | 
TOKO, INC |
| 描述： | 暂无描述 稳压器 |
| 文件： | 总22页 (文件大小：108K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TK713xx
LOW DROPOUT REGULATOR
FEATURES
APPLICATIONS
■ Low Dropout Voltage
■ Low Quiescent Current
■ Very Stable Output
■ Battery Powered Systems
■ Portable Consumer Equipment
■ Cordless Telephones
■ Personal Communications Equipment
■ Radio Control Systems
■ Toys
■ Active Low On/Off Control
■ Miniature Package (SOT-25)
■ Low Voltage Systems
DESCRIPTION
TK713xx is a low dropout, linear regulator with a built-in
electronic switch. Since a PNP power transistor is used,
dropout voltage is very low, making it possible to maintain
a stable output voltage even as the battery voltage
decreases. This allows longer battery life. The TK713xx
has a control pin to turn the output on or off. The input
current is 10 µA when the output is off.
TK713xx
CONTROL
V
V
IN
20P
GND
The TK713xx is available in a miniature SOT-25 surface
mount package.
GND
OUT
ORDERING INFORMATION
BLOCK DIAGRAM
TK713
M
Tape/Reel Code
VoltageCode
V
V
OUT
IN
THERMAL
PROTECTION
VOLTAGE CODE
TAPE/REEL CODE
TL: Tape Left
15 = 1.5 V
20 = 2.0 V
25 = 2.5 V
28 = 2.8 V
30 = 3.0 V
33 = 3.3 V
40 = 4.0 V
45 = 4.5 V
50 = 5.0 V
SHUTDOWN
CONTROL
BANDGAP
REFERENCE
GND
GND
January 1999 TOKO, Inc.
Page 1
TK713xx
ABSOLUTE MAXIMUM RATINGS
Input Voltage ............................................................ 15 V
Power Dissipation (Note 1) ................................ 350 mW
Operating Voltage Range............................... 1.4 to 14 V
Junction Temperature ........................................... 150 °C
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +80 °C
Lead Soldering Temperature (10 s) ...................... 235 °C
TK71315 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 1.8 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 1.8 V, IOUT = 0 mA
MIN
TYP
150
2.0
12
MAX UNITS
300
5.0
µA
mA
µA
IQ
VIN = 1.3 V, IOUT = 0 mA
VIN = 3.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
40
Regulated Output Voltage VIN = 1.8 V, IOUT = 10 mA
1.42
40
1.5
100
60
1.58
250
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
IGND
VIN = 1.8 V, IOUT = 30 mA
VIN = 1.8 to 6.0 V
1.5
0.9
15
3.5
1.5
40
Line Reg Line Regulation
Load Reg Load Regulation
I
OUT = 1 to 30 mA
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
66
∆VOUT /∆T
Temperature Coefficient
0.1
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25 °C. Power dissipation is
150 mW in Free Air. Derate at 1.2 mW/°C for operation above 25 °C.
Page 2
January 1999 TOKO, Inc.
TK713xx
TK71320 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 3.0 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 3.0 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
40
µA
mA
µA
IQ
VIN = 1.9 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
Regulated Output Voltage VIN = 3.0 V, IOUT = 10 mA
1.9
2.0
100
160
1.5
10
2.1
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
100
IGND
VIN = 3.0 V, IOUT = 30 mA
VIN = 3.0 to 13.5 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
I
OUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.15
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
January 1999 TOKO, Inc.
Page 3
TK713xx
TK71325 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 3.5 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 3.5 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
40
µA
mA
µA
IQ
VIN = 2.0 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
Regulated Output Voltage VIN = 3.5 V, IOUT = 10 mA
2.4
2.5
100
160
1.5
10
2.6
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
100
IGND
VIN = 3.5 V, IOUT = 30 mA
VIN = 3.5 to 13.5 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.15
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
Page 4
January 1999 TOKO, Inc.
TK713xx
TK71328 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 3.8 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 3.8 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
40
µA
mA
µA
IQ
VIN = 2.5 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
Regulated Output Voltage VIN = 3.8 V, IOUT = 10 mA
2.7
2.8
100
160
1.5
10
2.9
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
100
IGND
VIN = 3.8 V, IOUT = 30 mA
VIN = 3.8 to 13.8 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.18
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
January 1999 TOKO, Inc.
Page 5
TK713xx
TK71330 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 4.0 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 4.0 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
40
µA
mA
µA
IQ
VIN = 2.5 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
Regulated Output Voltage VIN = 4.0 V, IOUT = 10 mA
2.9
3.0
100
160
1.5
10
3.1
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
100
IGND
VIN = 4.0 V, IOUT = 30 mA
VIN = 4.0 to 14.0 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.18
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
Page 6
January 1999 TOKO, Inc.
TK713xx
TK71333 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 3.9 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 3.9 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
40
µA
mA
µA
IQ
VIN = 2.8 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
Regulated Output Voltage VIN = 3.9 V, IOUT = 10 mA
3.2
3.3
100
160
1.5
10
3.4
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
100
IGND
VIN = 3.9 V, IOUT = 30 mA
VIN = 3.9 to 14.0 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.18
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
January 1999 TOKO, Inc.
Page 7
TK713xx
TK71340 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 4.6 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 4.6 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
µA
mA
µA
IQ
VIN = 3.5 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
40
Regulated Output Voltage VIN = 4.6 V, IOUT = 10 mA
3.88
100
4.00
100
160
1.5
10
4.12
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
IGND
VIN = 4.6 V, IOUT = 30 mA
VIN = 4.6 to 14.0 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
I
OUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.20
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
Page 8
January 1999 TOKO, Inc.
TK713xx
TK71345 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 5.1 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 5.1 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
µA
mA
µA
IQ
VIN = 4.0 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
40
Regulated Output Voltage VIN = 5.1 V, IOUT = 10 mA
4.36
100
4.50
100
160
1.5
10
4.64
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
IGND
VIN = 5.1 V, IOUT = 30 mA
VIN = 5.1 to 14.0 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.25
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
January 1999 TOKO, Inc.
Page 9
TK713xx
TK71350 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 5.6 V, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
Quiescent Current
Standby Current
TEST CONDITIONS
VIN = 5.6 V, IOUT = 0 mA
MIN
TYP
130
1.4
12
MAX UNITS
300
3.0
µA
mA
µA
IQ
VIN = 4.0 V, IOUT = 0 mA
VIN = 8.0 V, Output OFF
ISTBY
VOUT
VDROP
IOUT
40
Regulated Output Voltage VIN = 5.6 V, IOUT = 10 mA
4.85
100
5.00
100
160
1.5
10
5.15
200
V
Dropout Voltage
Output Current
Ground Current
IOUT = 30 mA
mV
mA
mA
mV
mV
dB
IGND
VIN = 5.6 V, IOUT = 30 mA
VIN = 5.6 to 14.0 V
3.5
30
40
Line Reg Line Regulation
Load Reg Load Regulation
IOUT = 1 to 60 mA
20
RR
Ripple Rejection
CL = 3.3 µF, f = 400 Hz, IOUT = 10 mA
63
∆VOUT /∆T
Temperature Coefficient
0.25
mV/° C
CONTROL TERMINAL SPECIFICATIONS
VCONT = 1.0 V, RCONT = 0 Ω, Output OFF
VCONT = 1.2 V, RCONT = 100 KΩ, Output OFF
RCONT = 100 KΩ, Output ON
43
60
µA
µA
V
ICONT
Control Current
4.5
VCONT(ON)
Control Voltage ON
0.4
VCONT(OFF) Control Voltage OFF
RCONT = 100 KΩ, Output OFF
1.2
V
Page 10
January 1999 TOKO, Inc.
TK713xx
TEST CIRCUIT
I
IN
V
IN
V
OUT
+
+
V
C
I
V
OUT
IN
L
OUT
CONTROL
GND
R
CONT
V
CONT
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 ° C, unless otherwise specified.
OUTPUT VOLTAGE VS.
INPUT VOLTAGE
GROUND CURRENT VS.
AMBIENT TEMPERATURE
DROPOUT VOLTAGE VS.
AMBIENT TEMPERATURE
500
400
5
4
50
30
I
= 60 mA
OUT
10
3
2
300
200
I
= 60 mA
OUT
I
= 30 mA
OUT
-10
-30
-50
1
0
100
0
I
= 30 mA
OUT
0
10
20
-50
0
50
100
-50
0
50
100
V
(V)
T
A
(°C)
T (°C)
A
IN
RIPPLE REJECTION VS.
FREQUENCY
NOISE SPECTRUM
= 30 mA
LINE TRANSIENT RESPONSE
-50
0
V
+ 2 V
OUT(TYP)
I
OUT
C
= 1 µF
L
V
+ 1 V
OUT(TYP)
C
= 3.3 µF
L
-100
-150
-50
C
= 10 µF
L
INSTRUMENT NOISE FLOOR
-100
0
500
1000
100
1 k
10 k
100 k
TIME (50 µs / DIV)
FREQUENCY (kHz)
FREQUENCY (Hz)
January 1999 TOKO, Inc.
Page 11
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
GROUND CURRENT VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
LOAD TRANSIENT RESPONSE
= 30 mA
INPUT VOLTAGE
10
8
I
OUT
V
+ 1 V
OUT(TYP)
0 mA
30 mA
I
= 0 mA
6
4
OUT
C
= 3.3 µF
L
60 mA
2
0
C
= 1.0 µF
V
= V
L
IN
OUT
0
50
100
TIME (50 µs / DIV)
I
(mA)
V
(100 mV / DIV)
IN
OUT
TK71315
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
1.55
1.50
1.45
2
150
I
= 0 mA
OUT
1
0
100
50
0
50
100
0
5
10
-50
0
50
100
I
(mA)
V
(V)
T (°C)
A
OUT
IN
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
1.55
500
400
300
200
5
4
3
2
1.50
1.45
100
0
1
0
0
50
100
0
100
(mA)
200
-50
0
50
100
I
(mA)
I
T (°C)
A
OUT
OUT
Page 12
January 1999 TOKO, Inc.
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71320
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
2.05
2
1
0
150
I
= 0 mA
OUT
2.00
100
50
1.95
0
50
100
100
100
0
5
10
-50
0
50
100
100
100
I
(mA)
V
(V)
T (°C)
A
OUT
IN
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
2.05
5
4
3
2
500
400
300
200
2.00
1.95
100
1
0
0
0
50
0
100
(mA)
200
-50
0
50
I
(mA)
I
T (°C)
A
OUT
OUT
TK71325
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
2.55
2
1
0
150
I
= 0 mA
OUT
2.50
100
50
2.45
0
50
0
5
10
-50
0
50
I
(mA)
V
(V)
T (°C)
A
OUT
IN
January 1999 TOKO, Inc.
Page 13
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71325 (CONT.)
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
2.55
500
400
300
200
5
4
3
2
2.50
2.45
100
0
1
0
0
50
100
100
100
0
100
(mA)
200
-50
0
50
100
100
100
I
(mA)
I
T (°C)
A
OUT
OUT
TK71330
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
2
1
0
3.05
150
I
= 0 mA
OUT
3.00
100
50
2.95
0
0
5
10
50
-50
0
50
V
(V)
I
(mA)
T (°C)
A
IN
OUT
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
3.05
500
400
300
200
5
4
3
2
3.00
2.95
100
1
0
0
0
50
0
100
(mA)
200
-50
0
50
I
(mA)
I
T (°C)
A
OUT
OUT
Page 14
January 1999 TOKO, Inc.
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71333
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
3.35
2
1
0
150
I
= 0 mA
OUT
3.30
100
50
3.25
0
-50
0
50
100
100
100
50
100
100
100
0
0
0
5
10
T
(°C)
I
(mA)
V
(V)
IN
A
OUT
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
3.35
5
4
3
2
500
400
300
200
3.30
3.25
100
1
0
0
0
50
100
(mA)
200
-50
0
50
I
(mA)
I
T (°C)
A
OUT
OUT
TK71335
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
3.55
2
1
0
150
I
= 0 mA
OUT
3.50
100
50
3.45
0
-50
0
50
50
5
10
T
A
(°C)
I
(mA)
V
(V)
IN
OUT
January 1999 TOKO, Inc.
Page 15
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71335 (CONT.)
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
SHORT CIRCUIT PROTECTION
3.55
500
400
300
200
5
4
3
2
3.50
3.45
100
0
1
0
-50
0
50
100
100
100
0
50
100
100
100
0
100
(mA)
200
T
(°C)
I
(mA)
I
OUT
A
OUT
TK71340
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
4.05
2
1
0
150
I
= 0 mA
OUT
4.00
100
50
3.95
0
50
0
5
10
-50
0
50
I
(mA)
V
(V)
T (°C)
A
OUT
IN
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
SHORT CIRCUIT PROTECTION
4.05
5
4
3
2
500
400
300
200
4.00
3.95
100
1
0
0
0
50
0
100
(mA)
200
-50
0
50
I
(mA)
I
T (°C)
A
OUT
OUT
Page 16
January 1999 TOKO, Inc.
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71345
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
4.55
2
1
0
150
I
= 0 mA
OUT
4.50
100
50
4.45
0
-50
0
50
100
50
100
100
100
0
5
10
T
(°C)
I
(mA)
V
(V)
IN
A
OUT
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
SHORT CIRCUIT PROTECTION
4.55
5
4
3
2
500
400
300
200
4.50
4.45
100
1
0
0
0
-50
0
50
100
50
0
100
(mA)
200
T
(°C)
I
(mA)
I
OUT
A
OUT
TK71350
OUTPUT VOLTAGE VS.
OUTPUT CURRENT
QUIESCENT CURRENT VS.
INPUT VOLTAGE
OUTPUT CURRENT VS.
AMBIENT TEMPERATURE
5.05
2
1
0
150
I
= 0 mA
OUT
5.00
100
50
4.95
0
50
0
5
10
-50
0
50
100
I
(mA)
V
(V)
OUT
T (°C)
A
IN
January 1999 TOKO, Inc.
Page 17
TK713xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 ° C, unless otherwise specified.
TK71350 (CONT.)
OUTPUT VOLTAGE VS.
AMBIENT TEMPERATURE
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
SHORT CIRCUIT PROTECTION
5.05
500
400
300
200
5
4
3
2
1
0
5.00
4.95
100
0
0
100
(mA)
200
-50
0
50
100
0
50
(mA)
100
I
T (°C)
A
I
OUT
OUT
Page 18
January 1999 TOKO, Inc.
TK713xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
LINE REGULATION (LINE REG)
PACKAGE POWER DISSIPATION (PD)
Line regulation is the ability of the regulator to maintain a
constant output voltage as the input voltage changes.
This is the power dissipation level at which the thermal
sensor is activated. The IC contains an internal thermal
sensorwhichmonitorsthejunctiontemperature. Whenthe
junction temperature exceeds the monitor threshold of
150 °C, the IC is shut down. The junction temperature
rises as the difference between the input power (VIN x IIN)
and the output power (VOUT x IOUT) increases. The rate of
temperature rise is greatly affected by the mounting pad
configuration on the PCB, the board material, and the
ambient temperature. When the IC mounting has good
thermal conductivity, the junction temperature will be low
even if the power dissipation is great. When mounted on
the mounting pad, the power dissipation of the SOT-25 is
increased to 350 mW. For operation at ambient
temperatures over 25 °C, the power dissipation of the
SOT-25 device should be derated at 2.8 mW/°C. To
determine the power dissipation for shutdown when
mounted, attach the device on the actual PCB and
deliberately increase the output current (or raise the input
voltage) until the thermal protection circuit is activated.
Calculatethepowerdissipationofthedevicebysubtracting
the output power from the input power. These
measurements should allow for the ambient temperature
ofthePCB. ThevalueobtainedfromPD /(150 °C-TA)isthe
derating factor. The PCB mounting pad should provide
maximum thermal conductivity in order to maintain low
device temperatures. As a general rule, the lower the
temperature, the better the reliability of the device. The
thermalresistancewhenmountedisexpressedasfollows:
LOAD REGULATION (LOAD REG)
Load regulation is the ability of the regulator to maintain a
constant output voltage as the load current changes. It is
a pulsed measurement to minimize temperature effects.
The load regulation is specified an output current step
condition of 1 mA to 60 mA.
QUIESCENT CURRENT (IQ)
The quiescent current is the current which flows through
thegroundterminalundernoloadconditions(IOUT =0mA).
GROUND CURRENT (IGND
)
Ground current is the current which flows through the
ground pin(s). It is defined as IIN - IOUT, excluding ICONT
.
DROPOUT VOLTAGE (VDROP
)
Thisisameasureof howwelltheregulatorperformsasthe
input voltage decreases. The smaller the number, the
further the input voltage can decrease before regulation
problems occur. Nominal output voltage is first measured
when VIN = VOUT + 1 at a chosen load current. When the
output voltage has dropped 100 mV from the nominal, VIN
- VO is the dropout voltage. This voltage is affected by load
current and junction temperature.
Tj = 0jA x PD + TA
OUTPUT NOISE VOLTAGE
This is the effective AC voltage that occurs on the output
voltage under the condition where the input noise is low
and with a given load, filter capacitor, and frequency
range.
For Toko ICs, the internal limit for junction temperature is
150 °C. If the ambient temperature (TA) is 25 °C, then:
150 °C = 0jA x PD + 25 °C
0jA = 125 °C / PD
THERMAL PROTECTION
This is an internal feature which turns the regulator off
when the junction temperature rises above 150 °C. After
the regulator turns off, the temperature drops and the
regulator output turns back on. Under certain conditions,
theoutputwaveformmayappeartobeanoscillationasthe
output turns off and on and back again in succession.
PD is the value when the thermal sensor is activated. A
simple way to determine PD is to calculate VIN x IIN when
the output side is shorted. Input current gradually falls as
temperature rises. You should use the value when thermal
equilibrium is reached.
January 1999 TOKO, Inc.
Page 19
TK713xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
The range of usable currents can also be found from the
graph below.
(mW)
3
P
D
6
D
PD
4
5
25
50
75
(°C)
150
T
A
Procedure:
1) Find PD
2) PD1 is taken to be PD x (~ 0.8 - 0.9)
3) Plot PD1 against 25 °C
4) Connect PD1 to the point corresponding to the 150 °C
with a straight line.
5) In design, take a vertical line from the maximum
operating temperature (e.g., 75 °C) to the derating
curve.
6) Read off the value of PD against the point at which the
vertical line intersects the derating curve. This is taken
as the maximum power dissipation, DPD
.
The maximum operating current is:
IOUT = (DPD / (VIN(MAX) - VOUT
)
1000
800
600
400
MOUNTED
FREE AIR
200
0
0
50
100
150
T
(°C)
A
SOT-25 POWER DISSIPATION CURVE
Page 20
January 1999 TOKO, Inc.
TK713xx
APPLICATION INFORMATION
INPUT/OUTPUT
DECOUPLING
CAPACITOR
OPTIMUM PERFORMANCE
CONSIDERATIONS
Optimum performance can only be achieved when the IC
is mounted on a PC board according to the diagram below.
Thisisbecauseoftheextremelysmallpackageandlimited
power dissipation. Shape the metal portion of the PCB as
shown in the following drawing.
Voltage regulators require input and output decoupling
capacitors. The required value of these capacitors vary
with application. Capacitors made by different
manufacturers can have different characteristics,
particularly with regard to high frequencies and Equivalent
Series Resistance (ESR) over temperature. The type of
capacitorisalsoimportant.Forexample,a4.7µFaluminum
electrolytic may be required for a certain application. If a
tantalum capacitor is used, a lower value of 2.2 µF would
be adequate. It is important to consider the temperature
characteristics of the decoupling capacitors. While Toko
regulators are designed to operate as low as -40 °C, many
capacitors will not operate properly at this temperature.
The capacitance of aluminum electrolytic capacitors may
decrease to 0 at low temperatures. This may cause
oscillation on the output of the regulator since some
capacitance is required to guarantee stability. Thus, it is
important to consider the characteristics of the capacitor
over temperature when selecting decoupling capacitors.
V
IN
V
OUT
+
+
GND
GND
CONTROL
SOT-25 BOARD LAYOUT
The ESR is another important parameter. The ESR will
increase with temperature but low ESR capacitors are
oftenlargerandmorecostly.Ingeneral,tantalumcapacitors
offer lower ESR than aluminum electrolytic, but new low
ESR aluminum electrolytic capacitors are now available
from several manufacturers. Usually a bench test is
sufficient to determine the minimum capacitance required
for a particular application. After taking thermal
characteristics and tolerance into account, the minimum
capacitance value should be approximately two times this
value. The recommended minimum capacitance for the
TK713xx is 2.2 µF for a tantalum capacitor or 3.3 µF for an
aluminum electrolytic. Please note that linear regulators
with a low dropout voltage have high internal loop gains
which require care in guarding against oscillation caused
by insufficient decoupling capacitance. The use of high
quality decoupling capacitors suited for your application
will guarantee proper operation of the circuit. Pay attention
to temperature characteristics of the capacitor, especially
the increase of ESR and decrease of capacitance in low
temperatures. Oscillation, reduction of ripple rejection and
increased noise may occur in some cases if the proper
capacitorisnotused. Anoutputcapacitormorethan1.0µF
isrequiredtomaintainstability.Thestandardtestcondition
is 3.3 µF (TA = 25 °C).
Use a large bypass capacitor and connect it in a place near
GNDoftheIC.Payattentiontotemperaturecharacteristics
of the capacitor, especially the increase of ESR and
decrease of capacitance in low temperatures. Oscillation,
reduction of ripple rejection and increased noise may
occur in some cases if the proper capacitor is not used. An
output capacitor more than 1.0 µF is required to maintain
stability. The standard test condition is 3.3 µF (TA = 25 °C).
January 1999 TOKO, Inc.
Page 21
TK713xx
PACKAGE OUTLINE
Marking Information
SOT-25 (SOT-23-5)
0.7
Marking
TK71315
TK71320
TK71325
TK71328
TK71330
TK71333
TK71340
TK71345
TK71350
H15
H20
H25
H28
H30
H33
H40
H45
H50
Marking
5
4
e
e
0.95
0.95
e'
+0.15
- 0.05
1.90
1
2
3
0.4
Recommended Mount Pad
0.95
0.95
e
e
0.1
M
2.9
0.3
2.8
0.1
Dimensions are shown in millimeters
Tolerance: x.x = 0.2 mm (unless otherwise specified)
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
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
Fax: (847) 699-7864
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 22
January 1999 TOKO, Inc.
© 1999 Toko, Inc.
IC-xxx-TK713xx
0798O0.0K
Printed in the USA
All Rights Reserved
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