TOKO TK11250MTL

TK112xx
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
APPLICATIONS
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Low Dropout Voltage
CMOS/TTL Compatible ON/OFF Switch
Very Low Standby Current 180 µA (ON, No Load)
Internal Thermal Shutdown
Short Circuit Protection
Very Low (0.1 µA) Current in OFF Mode
Low Noise with External Bypass Capacitor
DESCRIPTION
Battery Powered Systems
Cellular Telephones
Pagers
Personal Communications Equipment
Portable Instrumentation
Portable Consumer Equipment
Radio Control Systems
Toys
Low Voltage Systems
The TK112XX is a low power, linear regulator with a builtin 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
connects to the internal circuitry, to lower the overall output
noise level.
TK112XXM
CONTROL 1
P50
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.
When the device is in standby mode (VCONT = 0), the
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
device will shut down in the presence of a short circuit at the
output.
6 VIN
2
5
GND
BYPASS 3
4
VO
GND
TK112
M PO
BLOCK DIAGRAM
VIN
CONTROL
6
1
S
S
S
S
4
VO
THERMAL
PROTECTION
S
S
ORDERING INFORMATION
S
–
+
S
S
S
TK112
+
M
–
S
S
Tape/Reel Code
S
S
S
BANDGAP
REFERENCE
Voltage Code
S
S
S
S
S
2,5 GND
TK112xx
VOLTAGE CODE
27 = 2.75 V
30 = 3.0 V
32 = 3.25 V
35 = 3.5 V
TAPE/REEL CODE
40 = 4.0 V
45 = 4.5 V
47 = 4.75 V
50 = 5.0 V
January, 1996 TOKO, Inc.
3
BX : Bulk/Bag
TL : Tape Left
NOISE
BYPASS
1-3-96
Page 1
TK112xx
ABSOLUTE MAXIMUM RATINGS
Operating Temperature Range ...................-30 to +80 °C
Lead Soldering Temp. (10 sec.) ............................ 240 °C
Junction Temperature ........................................... 150 °C
Supply Voltage ......................................................... 16 V
Output Current .................................................... 220 mA
Power Dissipation (Note 1) ................................ 400 mW
Storage Temperature Range ................... -55 to +150 °C
TK11227 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 3.8 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
V IN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
V IN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
V DROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
V IN = 3.25 → 8.25 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
2.75
2.84
V
0.18
0.3
V
1.8
170
2.66
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
60
dB
0.15
mV/ °C
30
µV(rms)
1.25
V
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
∆VO/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
V NO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
V REF
Noise Bypass Terminal Voltage
Control Terminal Specification
ICONT
Control Current
Output on, V CONT = 2.4 V
V CONT
Control Voltage
Output on
14
2.4
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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 T J. The output change due to temperature change is not included.
Note 1:
Page 2
1-3-96
January, 1996 TOKO, Inc.
TK112xx
TK11230 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 4 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
VIN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
VIN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
VDROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
VIN = 3.5 → 8.5 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
3.00
3.10
V
0.18
0.3
V
1.8
170
2.90
150
170
mA
130.0
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10
60.0
dB
∆VO/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.15
mV/ °C
VNO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
30
µV(rms)
VREF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, VCONT = 2.4 V
VCONT
Control Voltage
Output on
14
2.4
Note 1:
Note 2:
Note 3:
Note 4:
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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.
Output side capacitor should have low ESR at low temperatures if used below 0 °C.
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
January, 1996 TOKO, Inc.
1-3-96
Page 3
TK112xx
TK11232 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 4.3 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
VIN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
VIN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
VDROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
VIN = 3.75 → 8.75 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
3.25
3.35
V
0.18
0.3
V
1.8
170
3.15
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
60.0
dB
∆VO/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.15
mV/ °C
VNO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
30
µV(rms)
VREF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, VCONT = 2.4 V
VCONT
Control Voltage
Output on
14
2.4
Note 1:
Note 2:
Note 3:
Note 4:
Page 4
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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.
Output side capacitor should have low ESR at low temperatures if used below 0 °C.
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
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.
TK112xx
TK11235 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 4.5 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
V IN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
V IN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
V DROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
V IN = 4 → 9 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
3.5
3.61
V
0.18
0.3
V
1.8
170
3.39
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
60.0
dB
∆VO/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.15
mV/ °C
V NO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
35
µV(rms)
V REF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, V CONT = 2.4 V
V CONT
Control Voltage
Output on
14
2.4
Note 1:
Note 2:
Note 3:
Note 4:
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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.
Output side capacitor should have low ESR at low temperatures if used below 0 °C.
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
January, 1996 TOKO, Inc.
1-3-96
Page 5
TK112xx
TK11240 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 5 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
V IN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
V IN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
V DROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
V IN = 4.5 → 9.5 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
4.0
4.12
V
0.18
0.3
V
1.8
170
3.88
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
60
dB
∆V O/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.2
mV/ °C
V NO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
40
µV(rms)
V REF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, V CONT = 2.4 V
V CONT
Control Voltage
Output on
14
2.4
Note 1:
Note 2:
Note 3:
Note 4:
Page 6
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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.
Output side capacitor should have low ESR at low temperatures if used below 0 °C.
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
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.
TK112xx
TK11245 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 5.5 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
VIN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
VIN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
VDROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
VIN = 5 → 10 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
4.5
4.63
V
0.18
0.3
V
1.8
170
4.37
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
60
dB
0.25
mV/ °C
45
µV(rms)
1.25
V
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
∆V O/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
VNO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
VREF
Noise Bypass Terminal Voltage
Control Terminal Specification
ICONT
Control Current
Output on, VCONT = 2.4 V
VCONT
Control Voltage
Output on
14
2.4
Note 1:
Note 2:
Note 3:
Note 4:
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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.
Output side capacitor should have low ESR at low temperatures if used below 0 °C.
IO (Output Current) is the measured current when the output voltage drops 0.3 V with respect to VO at IO = 30 mA.
This measurement (pulse measurement) is with a constant TJ. The output change due to temperature change is not included.
January, 1996 TOKO, Inc.
1-3-96
Page 7
TK112xx
TK11247 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 5.7 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
V IN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
V IN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
V DROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
4.75
4.89
V
0.18
0.3
V
1.8
170
4.61
150
170
V IN = 5.25 → 10.25 V
3.0
mA
130
mA
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
60
dB
∆VO/∆TA
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.4
mV/ °C
V NO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
45
µV(rms)
V REF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, V CONT = 2.4 V
V CONT
Control Voltage
Output on
14
2.4
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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 T J. The output change due to temperature change is not included.
Note 1:
Page 8
1-3-96
January, 1996 TOKO, Inc.
TK112xx
TK11250 ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, VIN = 6 V, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
VIN
Supply Voltage Range
IIN
Supply Current
IO = 0 mA, Except ICONT
IINS
Standby Current
VIN = 8 V, Output off
VO
Output Voltage
IO = 30 mA
VDROP
Dropout Voltage
IO = 60 mA
IO
Output Current
Note 3
IOR
Recommended Output Current
Line Reg
Line Regulation
VIN = 5.5 → 10.5 V
Load Reg
Load Regulation
MIN
TYP
MAX
UNITS
15
V
350
µA
0.1
µA
5.0
515
V
0.18
0.3
V
1.8
160
4.85
150
170
mA
130
mA
3.0
20
mV
IO = 5 mA → 60 mA
30
60
mV
IO = 5 mA → 100 mA
80
150
mV
RR
Ripple Rejection
100 mV(rms), f = 400 Hz,
IO = 10 mA
60
dB
∆VO/∆T A
Temperature Coefficient
IO = 10 mA
-25 °C ≤ TA ≤ + 75 °C
0.4
mV/ °C
VNO
Output Noise Voltage
10 Hz < f < 100 kHz,
IO = 30 mA, Cp = 0.01 µF
50
µV(rms)
VREF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
ICONT
Control Current
Output on, VCONT = 2.4 V
VCONT
Control Voltage
Output on
14
2.4
Output Rise Time Off → On
IO = 30 mA, VCONT = 0 → 2.4 V
µA
V
Output off
tr
40
0.6
0.3
V
ms
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 T J. The output change due to temperature change is not included.
Note 1:
January, 1996 TOKO, Inc.
1-3-96
Page 9
TK112xx
TEST CIRCUIT
A
+
_
VIN
S
S
+
VOUT
VIN
1 µF
6
5
4
1
2
3
+
_
A
S
VO
S
10 µF
IOUT
V
Noise Bypass
.01 µF
CONT
CONT
+
ICONT
V
NOTE: CONNECT PINS 2 AND 5 TO
GND FOR MAXIMUM HEAT CONDUCTION.
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C unless otherwise specified.
3
TK11230
2
0.2
RCONT = 0
40
ICONT (µA)
VO (V)
0.3
TA= 25 °C
50
VO
75 K
20
TK11220
TK11250
30
75 K
150 K
300 K
VIN = VO + 1
TK11250
4
0.4
VDROP (V)
TA = 25 °C
5
RCONT = 0
TA = 25 °C
0.5
CONTROL TERMINAL CIRCUIT CURRENT vs.
CONTROL TERMINAL VOLTAGE
OUTPUT VOLTAGE vs.
SHORT CIRCUIT CURRENT
DROPOUT VOLTAGE vs.
LOAD CURRENT
150 K
0.1
1
10
0
0
0
300 K
0
50
IO (mA)
0
100
TK112XX• TPC01
200
0
TK112XX • TPC02
RIPPLE REJECTION
QUIESCENT CURRENT vs.
INPUT VOLTAGE
TA = 25 °C
200
100
IO (mA)
1
2
3
VCONT (V)
5
LINE TRANSIENT RESPONSE
TA = 25 °C
0
4
TK112XX • TPC03
TA = 25 °C
LEVEL (dB)
ICONT (pA)
DV = 1 V
100
VCC
-50
VO
10 mV/DIV
0
0
Page 10
10
VCC (V)
20
-100
100
1k
10k
100k
50 µs/DIV
HZ
TK112XX • TPC04
TK112XX • TPC05
1-3-96
TK112XX • TPC06
January, 1996 TOKO, Inc.
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
LOAD TRANSIENT RESPONSE
SHUTDOWN CONTROL (OFF-ON)
TA = 25 °C
IO = 60 mA
NOISE LEVEL vs.
BYPASS CAPACITOR (pF)
TA = 25 °C
TA = 25 °C
IO = 60 mA
SD
IO
200
IO = 0 mA
VO
CP=.001
CP=.01
CP=.1
10 mV/DIV
VO
CL=10 µF
NOISE (µV)
CL=3.3 µF
CL = 3.3 µF
CL = 10 µF
150
TK11220
CL = 3.3 µF
100
CP=.001
CP=.01
CP=.1
50 µs/DIV
TK11250
CL = 10 µF
50
0
50 µs/DIV
1 pF
10 pF
100 pF
.01 µF
.001µF
.1 µF
Cp
TK12XX • TPC07
TK112XX • TPC08
QUIESCENT CURRENT vs.
TEMPERATURE
2.5
IO = 30 mA
VCONT = 5 V
CONTROL PIN CURRENT (µA)
IO = 60 mA
50
500
DROP OUT VOLTAGE (mV)
QUIESCENT CURRENT (mA)
CONTROL PIN CURRENT vs.
TEMPERATURE
DROPOUT VOLTAGE vs.
TEMPERATURE
VIN = VO +1V
5
TK112XX • TPC09
400
300
200
IO = 60 mA
100
40
30
20
VCONT = 2.4 V
10
IO = 30 mA
0
–50
0
TA (°C)
0
–50
100
50
100
50
TA (°C)
TK112XX • TPC10
TK112XX • TPC11
0
–50
0
50
TA (°C)
100
TK112XX • TPC12
OUTPUT CURRENT vs.
TEMPERATURE
CONTROL PIN VOLTAGE vs.
TEMPERATURE
2.0
200
OUTPUT CURRENT (mA)
CONTROL PIN VOLTAGE (V)
0
1.0
180
160
140
120
0
–50
0
50
TA (°C)
January, 1996 TOKO, Inc.
100
TK112XX • TPC13
–50
0
50
TA (°C)
1-3-96
100
TK112XX • TPC14
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
10
2.95
2.75
VO (V)
IQ (mA)
VO (V)
2.75
5
2.65
2.55
2.45
2.55
2.35
0
0
50
IO (mA)
100
50
IO (mA)
0
227-1
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
100
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
2.80
2.75
OUTPUT VOLTAGE vs.
TEMPERATURE
60 mA
VO (V)
1
20
227-3
IO = 0 mA
30 mA
VO (V)
IIN (mA)
2
10
VIN (V)
0
227-2
2.25
IO = 30 mA
2.75
60 mA
90 mA
2.70
0
1.75
10
VIN (V)
0
20
2.25
227-4
2.75
VIN (V)
3.25
-50
227-5
0
100
50
TA(°C)
227-6
TK11230
TA = 25 °C
TA = 25 °C
10
VIN = 3.1 V
3.2
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
LOAD CURRENT
OUTPUT VOLTAGE vs.
OUTPUT CURRENT
TA = 25 °C
3.1
VIN = 4.0 V
IO = 0 mA
3.0
VO (V)
IQ (mA)
VO (V)
3.0
5
2.9
2.8
2.7
2.8
2.6
0
0
Page 12
50
IO (mA)
100
0
50
IO (mA)
TK112XX • TPC27
1-3-96
100
TK112XX • TPC28
0
10
VIN (V)
20
TK112XX• TPC29
January, 1996 TOKO, Inc.
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11230 (CONT.)
INPUT CURRENT vs.
INPUT VOLTAGE
TA = 25 °C
2
OUTPUT VOLTAGE vs.
TEMPERATURE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
TA = 25 °C
3.0
IO = 0 mA
VIN = 4.0 V
3.05
IO = 0 mA
IO = 30 mA
1
IO = 60 mA
IO = 90 mA
2.5
VO (V)
VO (V)
IIN (µA)
IO = 30 mA
2.95
–50
2.0
0
0
10
VIN (V)
20
3.5
3.0
2.5
VIN (V)
TK112XX • TPC30
IO = 60 mA
3.0
0
80
50
TA (°C)
TK112XX • TPC31
TK112XX • TPC32
TK11232
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
10
3.45
3.25
3.2
VO (V)
IQ (mA)
VO (V)
3.3
5
3.1
3.0
2.9
3.0
0
0
50
IO (mA)
50
IO (mA)
0
100
232-1
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
10
VIN (V)
0
100
232-2
20
232-3
OUTPUT VOLTAGE vs.
TEMPERATURE
OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
3.30
2
1
60 mA
3.0
VO (V)
VO (V)
IIN (mA)
3.2 IO = 0 mA
90 mA
2.8
IO = 30 mA
3.25
30 mA
60 mA
2.6
2.4
0
0
10
VIN (V)
January, 1996 TOKO, Inc.
20
232-4
2.8
3.20
3.2
VIN (V)
1-3-96
3.7
232-5
-50
0
50
TA (°C)
100
232-6
Page 13
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11235
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
3.6
10
3.7
3.5
VO (V)
IQ (mA)
VO (V)
3.5
5
3.4
3.3
3.2
3.3
3.1
0
0
50
IO (mA)
100
50
IO (mA)
0
235-1
INPUT CURRENT (NO LOAD vs.
SUPPLY VOLTAGE
235-2
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
3.55
20
235-3
OUTPUT VOLTAGE vs.
TEMPERATURE
IO = 0 mA
3.5
2
10
VIN (V)
0
100
30 mA
1
VO (V)
VO (V)
IIN (mA)
60 mA
3.0
3.5
IO = 30 mA
60 mA
90 mA
3.45
0
0
10
VIN (V)
2.5
3.0
20
3.5
VIN (V)
235-4
4.0
-50
235-5
0
50
TA (°C)
100
235-6
TK11240
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
4.1
10
4.2
4.0
VO (V)
IQ (mA)
VO (V)
4.0
5
3.9
3.8
3.7
3.8
3.6
0
0
Page 14
50
IO (mA)
100
240-1
0
50
IO (mA)
1-3-96
100
240-2
0
10
VIN (V)
20
240-3
January, 1996 TOKO, Inc.
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11240 (CONT.)
SUPPLY VOLTAGE vs.
INPUT CURRENT (NO LOAD)
SUPPLY VOLTAGE vs.
OUTPUT VOLTAGE
4.0
IO = 0 mA
30 mA
1
60 mA
3.5
VO (V)
VO (V)
ICC (mA)
2
TEMPERATURE vs.
OUTPUT VOLTAGE
4.05
90 mA
IO = 30 mA
4.0
60 mA
3.95
0
10
VCC (V)
0
3.0
3.5
20
240-4
TK11245
4.0
VCC (V)
-50
4.5
4.7
100
50
TA(°C)
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
0
240-5
240-6
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
4.6
10
4.5
VO (V)
IQ (mA)
VO (V)
4.5
5
4.4
4.3
4.2
4.3
0
50
IO (mA)
4.1
0
100
50
IO (mA)
0
245-1
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
100
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
4.55
OUTPUT VOLTAGE vs.
TEMPERATURE
4.0
IO = 30 mA
60 mA
VO (V)
VO (V)
IIN (mA)
30 mA
1
20
245-3
IO = 0 mA
4.5
2
10
VIN (V)
0
245-2
90 mA
4.5
60 mA
4.45
0
0
10
VIN (V)
January, 1996 TOKO, Inc.
20
245-4
3.5
4.0
4.5
VIN (V)
1-3-96
5.0
245-5
-50
0
50
TA (°C)
100
245-6
Page 15
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11247
OUTPUT VOLTAGEvs.
SUPPLY VOLTAGE
QUIESCENT CURRENT vs.
OUTPUT CURRENT
LOAD REGULATION
4.95
4.85
10
4.75
VO (V)
IQ (mA)
VO (V)
4.75
5
4.65
4.55
4.45
4.55
0
50
IO (mA)
4.35
0
100
50
IO (mA)
0
247-1
INPUT CURRENT (NO LOAD) vs.
INPUT VOLTAGE
10
VIN (V)
0
100
247-2
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
4.80
20
247-3
OUTPUT VOLTAGE vs .
TEMPERATURE
4.75
2
IO = 0 mA
1
IO = 30 mA
60 mA
VO (V)
VO (V)
IIN (mA)
30 mA
4.75
60 mA
4.25
90 mA
4.70
0
0
20
10
VIN (V)
3.75
4.25
247-4
4.75
VIN (V)
5.25
-50
0
50
100
TA (°C)
247-5
247-6
TK11250
OUTPUT VOLTAGE vs.
OUTPUT CURRENT
QUIESCENT CURRENT vs.
LOAD CURRENT
TA = 25 °C
VIN = 6.0 V
5.2
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
TA = 25 °C
10
TA = 25 ° C
5.1
VIN = 6.0 V
IO = 0 mA
5.0
VO (V)
IQ (mA)
VO (V)
5.0
5
4.9
4.8
4.7
4.8
4.6
0
0
Page 16
50
IO (mA)
100
0
50
IO (mA)
TK112XX • TPC33
1-3-96
100
TK112XX • TPC34
0
10
VIN (V)
20
TK112XX• TPC35
January, 1996 TOKO, Inc.
TK112xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C unless otherwise specified.
TK11250 (CONT.)
TA = 25 °C
2
OUTPUT VOLTAGE vs.
TEMPERATURE
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
INPUT CURRENT vs.
INPUT VOLTAGE
TA = 25 °C
5.0
IO = 0 mA
VIN = 6.0 V
5.05
IO = 0 mA
IO = 30 mA
1
4.5
IO = 60 mA
IO = 90 mA
VO (V)
VO (V)
IIN (µA)
IO = 30 mA
4.0
0
0
10
VIN (V)
20
4.5
TK112XX • TPC36
5.0
VIN ( V)
5.5
5.0
4.95
–50
TK112XX • TPC37
IO = 60 mA
0
50
TA (° C)
80
TK112XX • TPC38
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
LINE REGULATION (LINE REG)
Line regulation is the relationship between change in
output voltage due to a change in input voltage.
LOAD REGULATION (LOAD REG)
Load regulation is the relationship between change in
output voltage due to a change in load current.
DROP OUT VOLTAGE (VDROP )
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 VIN = VO + 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.
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.
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
January, 1996 TOKO, Inc.
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.
PACKAGE POWER DISSIPATION (PD)
This is the power dissipation level at which the thermal
sensor is activated. The IC contains an internal thermal
sensor which monitors the junction temperature. When the
junction temperature exceeds the monitor threshold of
150 °C, the IC is shutdown. The junction temperature rises
as the difference between the input power (VIN X IIN) and
the output power (VO X IO) 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 onthe recommended mounting pad, the power dissipation of the SOT23L is increased to 400 mW. For operation at ambient
temperatures over 25 °C, the power dissipation of the SOT23L 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 dissipation 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
PD/(150 °C - T A) is the derating factor. The PCB mounting
pad should provide maximum thermal conductivity in order
to maintain low device temperatures. As a general rule, the
1-3-96
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 expressed as follows:
INPUT/OUTPUT DECOUPLING CAPACITOR CONSIDERATIONS
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 resistance (ESR)
over temperature. The type of capacitor is also important.
For example, a 5.6 µF aluminum electrolytic may be required for a certain application. If a tantalum capacitor is
used, a lower value of 3.3 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 -30 °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 selection
decoupling capacitors. The ESR is another important
parameter. The ESR will increase with temperature but low
ESR capacitors are often larger and more costly. In
general, Tantalum capacitors 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 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 oscillation caused by insufficient decoupling capacitance. The
use of high quality decoupling capacitors suited for your
application will guarantee proper operation of the circuit.
TJ = 0JA X PD + TA
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 X PD = 125 °C
0JA = 125 °C/ PD
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.
The range of currents usable can also be found from the
graph below.
(mW)
3
PD
6
Dpd
4
5
25
50
75
T (°C)
150
Procedure:
1.)
2.)
3.)
4.)
5.)
6.)
Find PD
PD1 is taken to be PD X (≈0.8 ~ 0.9)
Plot PD1 against 25 °C
Connect PD1 to the point corresponding to the
150 °C with a straight line.
In design, take a vertical line from the maximum
operating temperature (e.g. 75 °C) to the derating
curve.
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.
NOISE BYPASS CAPACITOR SECTION
The noise bypass capacitor (CP) should be connected as
close as possible to pin 3 and ground. The recommended
value for CP 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
to external noise and oscillation can occur when CP is not
used and the solder pad for this pin is made too large.
The maximum operating current is IO X (DPD/(VIN(MAX) VO).
Page 18
1-3-96
January, 1996 TOKO, Inc.
TK112xx
APPLICATION INFORMATION
1.) Disabling the control pin
4.) Parallel connection for ON/OFF control
Connect control terminal to VIN through a resistor (R).
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
Cont
V
V
IN
6
5
O
GND
VIN
+
+
RS Cont
0.1 µF
10 µF
GND
VIN
2
+
VO
3
2V
11220
0.1 µF +
C = 10 nF
P
0 Ω ≤ R ≤ 300 kΩ
Cont
GND
+
On/Off
Figure A
2.) Using the control function
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.
To reduce IC power dissipation, connect a resistor, RS, in
series with VIN for the lower output voltage devices. This
will prevent thermal shutdown due to excessive power
dissipation.
5.) Constant current load
VIN
+
V
3V
11230
R
1
+
VO
4
+
1 µF
5V
11250
V
IN
6
5
VO
112XX
R
+
O
4
Cont
GND
+
ON/OFF
+
+
10 µF
1
µF
1
2
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
ON/OFF control is not being used, connect it to VIN.
3
C = 10 nF
R
P
Figure B
3.) Microprocessor/Logic Control
VO
VIN
112XX
Microprocessor
Cont
+
GND
+
The Input and Control current in the off mode are less than
200 pA.
January, 1996 TOKO, Inc.
1-3-96
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.
A
AA
+
+
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, particularly in the case of very small packages,
where the plastic is very thin. In order to preserve the
original moisture barrier properties of the package, 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 environment (40 to 65%) or in an enclosed environment with
desiccant.
Page 20
1-3-96
January, 1996 TOKO, Inc.
TK112xx
PACKAGE OUTLINE
SOT23L
6
5
4
0.6
1.0
Marking Information
3.2
11227
11230
11232
11235
11240
11245
11247
11250
e1
Marking Information
Orientation Mark
1
2
3
+0.1
0.4 -0.05
e
0.1
M
e
0.95
e
0.95
0.95
e
0.95
P2
P3
P3
P3
P4
P4
P4
P5
Recommended Mount Pad
± 0.2
2.2
± 0.2
0.2
Max
1.2 ±
+0.1
-0.05
±0.15
3.3
30°
0.4
0.15
0.05
± 0.05
1.25
+0.15
-0
0.3
3.4
± 0.3
(Pin 2 and pin 5 should be
grounded for heat dissipation)
Unit:mm
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.
YOUR LOCAL REPRESENTATIVE IS:
TOKO America, Inc.
1250 Feehanville Dr.
Mt. Prospect, ILL 60056
Tel: 1(800) PIK-TOKO
Fax: 1(847) 699-1194
January, 1996 TOKO, Inc.
© 1993 Toko America, Inc.
All Rights Reserved
1-3-96
IC-114-TK112
Page 21
Printed in U.S.A.