TK11245MTL [TOKO]
VOLTAGE REGULATOR WITH ON/OFF SWITCH; 带ON / OFF开关稳压器
| 型号： | TK11245MTL |
| 厂家： | 
TOKO, INC |
| 描述： | VOLTAGE REGULATOR WITH ON/OFF SWITCH |
| 文件： | 总21页 (文件大小：253K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TK112xx
VOLTAGE REGULATOR WITH ON/OFF SWITCH
APPLICATIONS
■ Battery Powered Systems
FEATURES
■ Low Dropout Voltage
■ Cellular Telephones
■ CMOS/TTL Compatible ON/OFF Switch
■ Very Low Standby Current 180 µA (ON, No Load)
■ Internal Thermal Shutdown
■ Pagers
■ Personal Communications Equipment
■ Portable Instrumentation
■ Portable Consumer Equipment
■ Radio Control Systems
■ Toys
■ Short Circuit Protection
■ Very Low (0.1 µA) Current in OFF Mode
■ Low Noise with External Bypass Capacitor
■ Low Voltage Systems
DESCRIPTION
The TK112XX is a low power, linear regulator with a built-
in electronic switch. The internal electronic 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 high logic
level. A pin for a bypass capacitor is provided, which
connectstotheinternalcircuitry, tolowertheoverall output
noise level.
TK112XXM
CONTROL
GND
1
2
3
6
5
4
V
IN
P50
GND
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 100 mV at 30 mA load
current). The device has very low quiescent current (180
µA) in the ON mode with no load and 1 mA with 30 mA load.
The quiescent current is typically 2.5 mA at 60 mA load.
V
O
BYPASS
When the device is in standby mode (V
= 0), the
CONT
quiescent current is typically 100 nA. An internal thermal
shutdown circuit limits the junction temperature to below
150 °C. The load current is internally monitored and the
devicewillshutdowninthepresenceofashortcircuitatthe
output.
BLOCK DIAGRAM
V
S
S
S
S
6
1
4
V
IN
O
CONTROL
S
THERMAL
PROTECTION
S
S
ORDERING INFORMATION
S
S
–
+
+
–
S
TK112
M
S
S
S
S
S
Tape/Reel Code
BANDGAP
REFERENCE
Voltage Code
S
S
S
S
S
GND
2,5
TK112xx
3
VOLTAGE CODE
27 = 2.75 V
30 = 3.0 V
32 = 3.25 V
35 = 3.5 V
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
40 = 4.0 V
45 = 4.5 V
47 = 4.75 V
50 = 5.0 V
NOISE
BYPASS
1-3-96
January, 1996 TOKO, Inc.
Page 1
TK112xx
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Output Current .................................................... 220 mA
Power Dissipation (Note 1) ................................ 400 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +80 °C
Lead Soldering Temp. (10 sec.)............................ 240 °C
Junction Temperature ........................................... 150 °C
TK11227 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 3.8 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
15
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
IN
I
I = 0 mA, Except I
CONT
170
350
0.1
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
IN
INS
V
Output Voltage
I = 30 mA
2.66
150
2.75
0.18
170
2.84
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 3.25 → 8.25 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60
0.15
30
dB
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
mV/ °C
µV(rms)
V
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
V
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
Output on
Output off
= 2.4 V
14
40
µA
V
CONT
CONT
CONT
2.4
V
CONT
0.6
V
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3: IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 2
TK112xx
TK11230 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 4 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
15
350
0.1
IN
I
I = 0 mA, Except I
CONT
170
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
INS
IN
V
Output Voltage
I = 30 mA
2.90
150
3.00
0.18
170
3.10
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130.0
OR
Line Reg
Load Reg
V
= 3.5 → 8.5 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60.0
0.15
30
dB
mV/ °C
µV(rms)
V
I = 10
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
V
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
Output on
Output off
= 2.4 V
14
40
µA
V
CONT
CONT
2.4
V
CONT
0.6
V
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
CONT
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 3
TK112xx
TK11232 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 4.3 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
15
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
IN
I
I = 0 mA, Except I
CONT
170
350
0.1
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
INS
IN
V
Output Voltage
I = 30 mA
3.15
150
3.25
0.18
170
3.35
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 3.75 → 8.75 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60.0
0.15
30
dB
mV/ °C
µV(rms)
V
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
O
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
V
10 Hz < f < 100 kHz,
NO
I = 30 mA, Cp = 0.01 µF
O
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
Output on
Output off
= 2.4 V
14
40
µA
V
CONT
CONT
2.4
V
CONT
0.6
V
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
CONT
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 4
TK112xx
TK11235 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 4.5 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
15
350
0.1
IN
I
I = 0 mA, Except I
CONT
170
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
IN
INS
V
Output Voltage
I = 30 mA
3.39
150
3.5
0.18
170
3.61
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 4 → 9 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60.0
0.15
35
dB
mV/ °C
µV(rms)
V
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
V
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
= 2.4 V
14
40
µA
CONT
CONT
CONT
Output on
Output off
2.4
V
V
V
CONT
0.6
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C. Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3: IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 5
TK112xx
TK11240 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 5 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
15
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
IN
I
I = 0 mA, Except I
CONT
170
350
0.1
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
IN
INS
V
Output Voltage
I = 30 mA
3.88
150
4.0
0.18
170
4.12
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 4.5 → 9.5 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60
0.2
40
dB
mV/ °C
µV(rms)
V
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
Output on
Output off
= 2.4 V
14
40
µA
V
CONT
CONT
CONT
2.4
V
CONT
0.6
V
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 6
TK112xx
TK11245 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 5.5 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
15
350
0.1
IN
I
I = 0 mA, Except I
CONT
170
µA
µA
V
IN
O
I
Standby Current
Output Voltage
V
= 8 V, Output off
INS
IN
V
I = 30 mA
4.37
150
4.5
0.18
170
4.63
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 5 → 10 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60
0.25
45
dB
mV/ °C
µV(rms)
V
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
O
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
V
10 Hz < f < 100 kHz,
NO
I = 30 mA, Cp = 0.01 µF
O
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
= 2.4 V
14
40
µA
CONT
CONT
Output on
Output off
2.4
V
V
V
CONT
0.6
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
CONT
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 7
TK112xx
TK11247 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 5.7 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
15
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
IN
I
I = 0 mA, Except I
CONT
170
350
0.1
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
IN
INS
V
Output Voltage
I = 30 mA
4.61
150
4.75
0.18
170
4.89
0.3
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 5.25 → 10.25 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60
0.4
45
dB
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
mV/ °C
µV(rms)
V
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
V
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
= 2.4 V
14
40
µA
CONT
CONT
CONT
Output on
Output off
2.4
V
V
V
CONT
0.6
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C. Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 8
TK112xx
TK11250 ELECTRICAL CHARACTERISTICS
Test conditions: T = 25 °C, V = 6 V, unless otherwise specified.
A
IN
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Supply Voltage Range
Supply Current
1.8
15
350
0.1
515
0.3
IN
I
I = 0 mA, Except I
CONT
160
µA
µA
V
IN
O
I
Standby Current
V
= 8 V, Output off
INS
IN
V
Output Voltage
I = 30 mA
4.85
150
5.0
0.18
170
O
O
V
Dropout Voltage
I = 60 mA
V
DROP
O
I
Output Current
Note 3
mA
mA
O
I
Recommended Output Current
Line Regulation
130
OR
Line Reg
Load Reg
V
= 5.5 → 10.5 V
3.0
30
80
20
60
mV
mV
mV
IN
I = 5 mA → 60 mA
Load Regulation
O
I = 5 mA → 100 mA
150
O
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
60
0.4
50
dB
I = 10 mA
O
∆V /∆T
Temperature Coefficient
Output Noise Voltage
Noise Bypass Terminal Voltage
I = 10 mA
mV/ °C
µV(rms)
V
O
NO
A
O
-25 °C ≤ T ≤ + 75 °C
A
V
10 Hz < f < 100 kHz,
I = 30 mA, Cp = 0.01 µF
O
V
1.25
REF
Control Terminal Specification
I
Control Current
Control Voltage
Output on, V
= 2.4 V
14
40
µA
CONT
CONT
Output on
Output off
2.4
V
V
V
CONT
0.6
t
Output Rise Time Off → On
I = 30 mA, V
= 0 → 2.4 V
0.3
ms
r
O
CONT
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C. Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3:
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
Note 4: This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
1-3-96
January, 1996 TOKO, Inc.
Page 9
TK112xx
TEST CIRCUIT
V
O
S
S
S
A
V
+
_
IN
+
+
V
I
OUT
V
10 µF
OUT
V
IN
1 µF
6
5
2
4
3
1
Noise Bypass
.01 µF
CONT
CONT
S
A
I
+
_
CONT
V
NOTE: CONNECT PINS 2 AND 5 TO
GND FOR MAXIMUM HEAT CONDUCTION.
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C unless otherwise specified.
CONTROL TERMINAL CIRCUIT CURRENT vs.
CONTROL TERMINAL VOLTAGE
OUTPUT VOLTAGE vs.
SHORT CIRCUIT CURRENT
DROPOUT VOLTAGE vs.
LOAD CURRENT
V
= V + 1
O
T = 25 °C
T = 25 °C
T = 25 °C
A
IN
A
A
5
4
0.5
0.4
0.3
0.2
0.1
0
50
40
R
= 0
TK11250
CONT
V
O
3
30
20
TK11230
75 K
2
TK11220
150 K
TK11250
1
0
10
0
300 K
0
100
200
0
50
100
0
1
4
5
2
3
I
(mA)
I
(mA)
V
(V)
TK112XX • TPC02
O
TK112XX • TPC03
TK112XX• TPC01
O
CONT
RIPPLE REJECTION
QUIESCENT CURRENT vs.
INPUT VOLTAGE
LINE TRANSIENT RESPONSE
T = 25 °C
T = 25 °C
T
= 25 °C
A
A
A
0
200
100
DV = 1 V
V
CC
-50
V
O
10 mV/DIV
-100
0
100
1k
10k
100k
0
50 µs/DIV
10
(V)
20
HZ
V
TK112XX • TPC04
CC
TK112XX • TPC05
TK112XX • TPC06
1-3-96
January, 1996 TOKO, Inc.
Page 10
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
LOAD TRANSIENT RESPONSE
SHUTDOWN CONTROL (OFF-ON)
NOISE LEVEL vs.
BYPASS CAPACITOR (pF)
T
= 25 °C
I
= 60 mA
T = 25 °C
T
= 25 °C
A
O
A
A
I
= 60 mA
O
SD
200
150
100
50
I
I
= 0 mA
TK11250
TK11220
CL = 3.3 µF
O
O
CL=3.3 µF
CL=10 µF
V
O
CL = 10 µF
CL = 3.3 µF
CP=.001
CP=.01
CP=.1
V
O
CP=.001
CP=.01
CP=.1
CL = 10 µF
0
1 pF
10 pF 100 pF .001µF .01 µF .1 µF
50 µs/DIV
50 µs/DIV
Cp
TK12XX • TPC07
TK112XX • TPC08
TK112XX • TPC09
QUIESCENT CURRENT vs.
TEMPERATURE
CONTROL PIN CURRENT vs.
TEMPERATURE
DROPOUT VOLTAGE vs.
TEMPERATURE
V
= V +1V
IN
O
50
500
400
5
V
= 5 V
CONT
40
I
= 60 mA
O
30
20
300
200
100
2.5
I
= 60 mA
O
I
= 30 mA
O
V
= 2.4 V
CONT
10
0
I
= 30 mA
O
0
–50
0
–50
0
100
50
–50
0
100
50
0
100
50
T
(°C)
T
(°C)
TK112XX • TPC12
T
(°C)
A
TK112XX • TPC10
TK112XX • TPC11
A
A
OUTPUT CURRENT vs.
TEMPERATURE
CONTROL PIN VOLTAGE vs.
TEMPERATURE
2.0
200
180
160
140
1.0
120
0
–50
–50
0
100
50
0
100
50
T
(°C)
T
(°C)
TK112XX • TPC14
A
TK112XX • TPC13
A
1-3-96
January, 1996 TOKO, Inc.
Page 11
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11227
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
2.85
2.75
10
5
2.95
2.75
2.65
2.55
2.45
2.55
0
2.35
0
0
10
20
227-3
50
100
0
50
100
V
(V)
IN
227-1
I
(mA)
I
(mA)
227-2
O
O
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
TEMPERATURE
2.80
2.75
2.70
2
1
0
2.75
I
= 0 mA
O
60 mA
30 mA
I
= 30 mA
O
2.25
1.75
60 mA
90 mA
2.75
0
10
20
227-4
2.25
3.25
227-5
-50
0
100
50
V
(V)
V
(V)
IN
IN
T (°C)
A
227-6
TK11230
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
OUTPUT CURRENT
QUIESCENT CURRENT vs.
LOAD CURRENT
T
= 25 °C
T = 25 °C
T
= 25 °C
A
A
A
10
3.1
3.0
2.9
V
= 3.1 V
V
= 4.0 V
I = 0 mA
IN
IN
O
3.2
3.0
2.8
5
2.8
2.7
2.6
0
0
10
(V)
20
0
50
100
0
50
100
V
I
(mA)
I
(mA)
TK112XX• TPC29
TK112XX • TPC27
TK112XX • TPC28
IN
O
O
1-3-96
January, 1996 TOKO, Inc.
Page 12
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11230 (CONT.)
OUTPUT VOLTAGE vs.
TEMPERATURE
INPUT CURRENT vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
V
= 4.0 V
T
= 25 °C
T
= 25 °C
IN
A
A
3.05
2
1
0
3.0
2.5
2.0
I
= 0 mA
O
I
= 0 mA
O
I
= 30 mA
= 60 mA
O
I
= 30 mA
O
I
= 60 mA
O
I
O
I
= 90 mA
O
3.0
2.95
–50
0
80
50
3.5
0
10
(V)
20
3.0
(V)
2.5
T
(°C)
TK112XX • TPC32
V
V
A
TK112XX • TPC30
TK112XX • TPC31
IN
IN
TK11232
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
10
5
3.45
3.25
3.3
3.2
3.1
3.0
2.9
3.0
0
0
10
20
232-3
0
50
100
232-2
0
50
100
232-1
V
(V)
I
(mA)
IN
I
(mA)
O
O
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
TEMPERATURE
OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
3.30
3.25
3.20
2
3.2
I
= 0 mA
O
60 mA
I
= 30 mA
60 mA
3.0
2.8
O
90 mA
1
0
30 mA
2.6
2.4
0
10
20
232-4
2.8
3.2
V (V)
3.7
-50
0
100
50
V
(V)
T (°C)
IN
IN
232-5
A
232-6
1-3-96
January, 1996 TOKO, Inc.
Page 13
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11235
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
LOAD REGULATION
OUTPUT CURRENT
3.6
3.5
10
5
3.7
3.5
3.4
3.3
3.2
3.3
0
3.1
0
0
10
20
50
100
0
50
100
V
(V)
IN
235-3
I
(mA)
I (mA)
235-1
O
O
235-2
INPUT CURRENT (NO LOAD vs.
SUPPLY VOLTAGE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
TEMPERATURE
3.55
3.5
I
= 0 mA
3.5
3.0
O
2
1
0
30 mA
60 mA
I
= 30 mA
60 mA
O
90 mA
3.45
2.5
3.0
0
10
20
3.5
4.0
-50
0
100
50
V
(V)
IN
V
(V)
235-4
235-5
IN
T (°C)
A
235-6
TK11240
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
4.1
4.0
10
4.2
4.0
3.8
3.9
3.8
3.7
5
0
3.6
0
10
20
240-3
0
50
100
0
50
100
V
(V)
IN
240-1
I
(mA)
I (mA)
240-2
O
O
1-3-96
January, 1996 TOKO, Inc.
Page 14
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11240 (CONT.)
SUPPLY VOLTAGE vs.
INPUT CURRENT (NO LOAD)
TEMPERATURE vs.
OUTPUT VOLTAGE
SUPPLY VOLTAGE vs.
OUTPUT VOLTAGE
4.05
4.0
2
1
0
4.0
3.5
I
= 0 mA
O
30 mA
60 mA
I
= 30 mA
O
90 mA
60 mA
3.95
3.0
0
10
20
-50
0
100
3.5
4.0
4.5
50
V
(V)
V
(V)
CC
T (°C)
A
240-4
CC
240-5
240-6
QUIESCENT CURRENT vs.
OUTPUT CURRENT
TK11245
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
LOAD REGULATION
4.6
4.5
4.7
4.5
4.3
10
5
4.4
4.3
4.2
4.1
0
0
50
100
0
50
100
0
10
20
245-3
V
(V)
I
(mA)
I
(mA)
IN
245-2
245-1
O
O
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
TEMPERATURE
4.55
4.5
I
= 0 mA
4.5
4.0
O
2
1
0
30 mA
I
= 30 mA
60 mA
60 mA
O
90 mA
4.45
3.5
4.0
4.5
(V)
5.0
0
10
20
-50
0
100
50
V
(V)
V
245-5
IN
245-4
IN
T (°C)
A
245-6
1-3-96
January, 1996 TOKO, Inc.
Page 15
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11247
OUTPUT VOLTAGEvs.
SUPPLY VOLTAGE
QUIESCENT CURRENT vs.
LOAD REGULATION
OUTPUT CURRENT
4.85
4.75
4.95
10
5
4.75
4.65
4.55
4.45
4.35
4.55
0
0
50
100
0
10
20
247-3
0
50
100
V
(V)
I
(mA)
IN
I
(mA)
247-1
O
O
247-2
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
OUTPUT VOLTAGE vs .
TEMPERATURE
4.80
4.75
4.70
4.75
2
1
0
I
= 0 mA
O
30 mA
I
= 30 mA
O
60 mA
60 mA
4.25
90 mA
3.75
0
10
20
4.25
4.75
5.25
-50
0
50
100
V
(V)
V
(V)
IN
247-4
IN
247-5
T (°C)
247-6
A
TK11250
OUTPUT VOLTAGE vs.
OUTPUT CURRENT
QUIESCENT CURRENT vs.
LOAD CURRENT
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
T
= 25 ° C
T
= 25 °C
T
= 25 °C
A
A
A
10
5.1
5.0
4.9
V
= 6.0 V
V
= 6.0 V
I = 0 mA
IN
O
IN
5.2
5.0
4.8
5
4.8
4.7
4.6
0
0
50
100
0
50
100
0
10
(V)
20
I
(mA)
I
(mA)
V
TK112XX • TPC33
TK112XX • TPC34
TK112XX• TPC35
O
O
IN
1-3-96
January, 1996 TOKO, Inc.
Page 16
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11250 (CONT.)
OUTPUT VOLTAGE vs.
TEMPERATURE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
INPUT CURRENT vs.
INPUT VOLTAGE
T
= 25 °C
V = 6.0 V
T
= 25 °C
A
IN
A
5.05
2
1
0
5.0
4.5
4.0
I
= 0 mA
O
I
= 0 mA
O
I
= 30 mA
I
= 30 mA
O
O
I
= 60 mA
O
I
= 90 mA
O
5.0
I
= 60 mA
O
4.95
–50
5.5
5.0
( V)
0
80
0
10
(V)
20
50
4.5
T (°C)
V
V
A
TK112XX • TPC38
TK112XX • TPC36
TK112XX • TPC37
IN
IN
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
output turns back on. Under certain conditions, the output
waveform may appear to be an oscillation as the output
turns off and on and back again in succession.
LINE REGULATION (LINE REG)
Line regulation is the relationship between change in
output voltage due to a change in input voltage.
PACKAGE POWER DISSIPATION (P )
D
LOAD REGULATION (LOAD REG)
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 shutdown. The junction temperature rises
as the difference between the input power (V X I ) and
Load regulation is the relationship between change in
output voltage due to a change in load current.
DROP OUT VOLTAGE (V
)
DROP
IN
IN
This is a measure of how well the regulator performs as the
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 V = V + 1 at a chosen load current. When the
the output power (V X I ) increases. The rate of tempera-
O
O
ture rise is greatly affected by the mounting pad configura-
tion on the PCB, the board material, and the ambient
temperature. When the IC mounting has good thermal
conductivity, thejunctiontemperaturewillbelowevenifthe
power dissipation is great. When mounted onthe recom-
mended mounting pad, the power dissipation of the SOT-
23L is increased to 400 mW. For operation at ambient
temperaturesover25°C, thepowerdissipationoftheSOT-
23L device should be derated at 3.2 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. Calculate the power dissipa-
tion of the device by subtracting the output power from the
input power. These measurements should allow for the
ambient temperature of the PCB. The value obtained from
IN
O
output voltage has dropped 100 mV from the nominal, V
IN
- V is the dropout voltage. This voltage is affected by load
O
current and junction temperature.
OUTPUT NOISE VOLTAGE
This is the effective AC voltage that occurs on the output
voltageundertheconditionwheretheinputnoiseislowand
with a given load, filter capacitor, and frequency range.
THERMAL PROTECTION
Thisisaninternalfeaturewhichturnstheregulatoroffwhen
the junction temperature rises above 150 °C. After the
regulator turns off, the temperature drops and the regulator
PD/(150 °C - T ) is the derating factor. The PCB mounting
A
pad should provide maximum thermal conductivity in order
tomaintainlowdevicetemperatures. Asageneralrule, the
1-3-96
January, 1996 TOKO, Inc.
Page 17
TK112xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
lower the temperature, the better the reliability of the
device. The Thermal resistance when mounted is ex-
pressed as follows:
INPUT/OUTPUT DECOUPLING CAPACITOR CONSIDER-
ATIONS
Voltage regulators require input and output decoupling
capacitors. The required value of these capacitors vary
withapplication. Capacitorsmadebydifferentmanufactur-
ers can have different characteristics, particularly with
regardtohighfrequenciesandequivalentresistance(ESR)
over temperature. The type of capacitor is also important.
For example, a 5.6 µF aluminum electrolytic may be re-
quired for a certain application. If a tantalum capacitor is
used, a lower value of 3.3 µF would be adequate. It is
importanttoconsiderthetemperaturecharacteristicsofthe
decoupling capacitors. While Toko regulators are de-
signedtooperateaslowas-30°C, manycapacitorswillnot
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 guar-
antee stability. Thus, it is important to consider the charac-
teristics of the capacitor over temperature when selection
decoupling capacitors. The ESR is another important
parameter. TheESRwillincreasewithtemperaturebutlow
ESR capacitors are often larger and more costly. In
general, Tantalum capacitors offer lower ESR than alumi-
num 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 capaci-
tance for the TK112xx is 3.3 µF. Please note that linear
regulators with a low dropout voltage have high internal
loop gains which requires care in guarding against oscilla-
tion caused by insufficient decoupling capacitance. The
use of high quality decoupling capacitors suited for your
application will guarantee proper operation of the circuit.
T = 0 X P + T
A
J
JA
D
For Toko ICs, the internal limit for junction temperature is
150 °C. If the ambient temperature, T is 25 °C, then:
A
150 °C = 0 X P + 25 °C
JA
D
0
0
X P = 125 °C
JA
JA
D
= 125 °C/ P
D
P is the value when the thermal sensor is activated. A
simple way to determine PD is to calculate V X I when
the output side is shorted. Input current gradually falls as
temperature rises. You should use the value when thermal
equilibrium is reached.
D
IN
IN
The range of currents usable can also be found from the
graph below.
(mW)
3
P
D
6
D
pd
4
5
25
50
75
T (°C)
150
Procedure:
1.)
2.)
3.)
4.)
Find P
D
P
is taken to be P X (≈0.8 ~ 0.9)
D1
D
Plot P against 25 °C
D1
Connect P
to the point corresponding to the
D1
150 °C with a straight line.
5.)
6.)
In design, take a vertical line from the maximum
operating temperature (e.g. 75 °C) to the derating
curve.
NOISE BYPASS CAPACITOR SECTION
Read off the value of P against the point at which
D
the vertical line intersects the derating curve. This
The noise bypass capacitor (C ) should be connected as
close as possible to pin 3 and ground. The recommended
P
is taken as the maximum power dissipation, D
.
PD
value for C is 0.01 µF. The noise bypass terminal has a
high impedance and care should be taken if the noise
bypass capacitor is not used. This terminal is susceptible
P
The maximum operating current is I X (D /(V -
IN(MAX)
O
PD
V ).
O
to external noise and oscillation can occur when C is not
P
used and the solder pad for this pin is made too large.
1-3-96
January, 1996 TOKO, Inc.
Page 18
TK112xx
APPLICATION INFORMATION
1.) Disabling the control pin
4.) Parallel connection for ON/OFF control
Connect control terminal to V through a resistor (R).
IN
Higher resistance values are good for reducing quiescent
current but this can cause the regulator to shut down at
lower input voltages. See Figure A.
VIN
VO
VIN
5 V
3 V
2 V
11250
11230
11220
+
+
+
Cont
VIN
GND
VO
V
V
O
IN
6
5
4
+
+
+
+
Cont
VIN
GND
VO
0.1 µF
0.1 µF
R
S
1 µF
R
10 µF
1
2
3
C
= 10 nF
P
Cont
GND
0 Ω ≤ R ≤ 300 kΩ
On/Off
Figure A
2.) Using the control function
To reduce IC power dissipation, connect a resistor, R , in
S
series with V for the lower output voltage devices. This
IN
will prevent thermal shutdown due to excessive power
dissipation.
Turn on the regulator by setting the control pin voltage to
2.4 V or higher. Turn off the regulator by pulling the control
pin below 0.6 V. The regulator can also be controlled
directly from a TTL or CMOS device. See Figure B.
5.) Constant current load
V
V
O
IN
R
+
+
112XX
V
V
O
IN
6
5
4
Cont
GND
+
ON/OFF
+
+
1
µF
10 µF
1
2
3
When there is a large ouput current, the quiescent current
also increases, and the difference becomes larger. When
using the ON/OFF control, the terminal voltage should be
set 2.4 V higher than the GND terminal of the IC. When the
C
= 10 nF
R
P
Figure B
ON/OFF control is not being used, connect it to V .
IN
3.) Microprocessor/Logic Control
V
V
O
IN
Microprocessor
112XX
Cont
+
GND
+
The Input and Control current in the off mode are less than
200 pA.
1-3-96
January, 1996 TOKO, Inc.
Page 19
TK112xx
APPLICATION INFORMATION (CONT.)
6.) Heat dissipation
Make the copper pattern as large as possible to provide
good heat dissipation (pin 5 is the heatsink).
Maximum power dissipation = 400 mW (When mounted as
recommended) See Figure C.
+
+
GND
Figure C
7.) Handling molded resin packages
All plastic molded packages absorb some moisture from
the air. If moisture absorption occurs prior to soldering the
devise into the printed circuit board, increased separation
of the lead from the plastic molding may occur, degrading
the moisture barrier characteristics of the device. This
property of plastic molding compounds should not be
overlooked, particularlyinthecaseofverysmallpackages,
where the plastic is very thin. In order to preserve the
originalmoisturebarrierpropertiesofthepackage, devices
are stored and shipped in moisture proof bags, filled with
dry air. The bags should not be opened or damaged prior
to the actual use of the devices. If this is unavoidable, the
devices should be stored in a low relative humidity environ-
ment (40 to 65%) or in an enclosed environment with
desiccant.
1-3-96
January, 1996 TOKO, Inc.
Page 20
TK112xx
PACKAGE OUTLINE
SOT23L
6
5
4
0.6
Marking Information
11227
11230
11232
11235
11240
11245
11247
11250
P2
P3
3
P
Marking
Information
P
3
P4
Orientation Mark
1
2
3
+0.1
0.4 -0.05
P
4
M
0.1
e
e
P4
P5
0.95
e 0.95
e 0.95
0.95
Recommended Mount Pad
0.2
3.4 ±
0.2
2.2 ±
±0.15
0.4
30° Max
0.3
3.3±
(Pin 2 and pin 5 should be
grounded for heat dissipation)
Unit:mm
TheinformationfurnishedbyTOKO,Inc.isbelievedtobeaccurateandreliable. However,TOKOreservestherighttomakechangesorimprovementsinthedesign,specificationormanufactureofitsproductswithoutfurthernotice.TOKO
doesnotassumeanyliabilityarisingfromtheapplicationoruseofanyproductorcircuitdescribedherein,norforanyinfringementsofpatentsorotherrightsofthirdpartieswhichmayresultfromtheuseofitsproducts. Nolicenseisgranted
byimplicationorotherwiseunderanypatentorpatentrightsofTOKO,Inc.
YOUR LOCAL REPRESENTATIVE IS:
TOKO America, Inc.
1250 Feehanville Dr.
Mt. Prospect, ILL 60056
Tel: 1(800) PIK-TOKO
Fax: 1(847) 699-1194
1-3-96
January, 1996 TOKO, Inc.
Page 21
Printed in U.S.A.
© 1993 Toko America, Inc.
All Rights Reserved
IC-114-TK112
相关型号：
©2020 ICPDF网 联系我们和版权申明