TK71639SCLH [TOKO]
LOW DROPOUT VOLTAGE REGULATOR; 低压差稳压器
| 型号： | TK71639SCLH |
| 厂家： | 
TOKO, INC |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总20页 (文件大小：113K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TK716xx
LOW DROPOUT VOLTAGE REGULATOR
FEATURES
APPLICATIONS
■ Available in ± 2.0 % or ± 1.0 % Output Tolerance
■ Active High On/Off Control
■ Very Low Quiescent Current
■ Very Low Dropout Voltage
■ Reverse Bias Protection
■ Battery Powered Systems
■ Cellular Telephones
■ Pagers
■ Personal Communications Equipment
■ Portable Instrumentation
■ Portable Consumer Equipment
■ Radio Control Systems
■ Toys
■ Miniature Package (SOT23-5)
■ Short Circuit Switch
■ High Ripple Rejection
■ Very High Output Impedance (Output Off)
■ Very Low Noise
■ Low Voltage Systems
DESCRIPTION
The TK716xx is a low dropout linear regulator housed in a
small SOT23-5 package, rated at 500 mW. The phase
compensation in the IC has been optimized to allow the
use of ceramic or tantalum output capacitors. The device
is in the “on” state when the control pin is pulled to a logic
high level. An internal PNP pass transistor is used to
achieve a low dropout voltage of 90 mV (typ.) at 50 mA
load current. This device offers high precision output
voltage of ± 2.0 % or ± 1.0 %. The low quiescent current
and dropout voltage make this part ideal for battery pow-
ered applications. This part incorporates an output discon-
nect feature to reduce the reverse bias current in the “off”
state to less than 50 nA.
Theinternalreversebiasprotectioneliminatestherequire-
ment for a reverse voltage protection diode, saving cost
and board space. The high 60 dB ripple rejection (400 Hz)
and low noise provide enhanced performance for critical
applications. An external capacitor can be connected to
the noise bypass pin to lower the output noise level to 30
µVrms.
TK716xx
V
V
OUT
IN
P
GND
CONTROL
NOISE
BYPASS
ORDERING INFORMATION
TK716
TK716
TK716
SCL
SIL
BLOCK DIAGRAM
SCL H
Voltage Code
Tolerance Code
Tape/Reel Code
Temp. Code
Capacitor Code
Package Code
V
V
OUT
IN
CONTROL
CIRCUIT
VOLTAGE CODE*
TAPE/REEL CODE
13 = 1.3 V
14 = 1.4 V
15 = 1.5 V
16 = 1.6 V
17 = 1.7 V
18 = 1.8 V
19 = 1.9 V
20 = 2.0 V
21 = 2.1 V
22 = 2.2 V
23 = 2.3 V
24 = 2.4 V
25 = 2.5 V
26 = 2.6 V
27 = 2.7 V
28 = 2.8 V
29 = 2.9 V
30 = 3.0 V
31 = 3.1 V
32 = 3.2 V
33 = 3.3 V
34 = 3.4 V
35 = 3.5 V
36 = 3.6 V
37 = 3.7 V
38 = 3.8 V
39 = 3.9 V
40 = 4.0 V
41 = 4.1 V
42 = 4.2 V
43 = 4.3 V
44 = 4.4 V
45 = 4.5 V
46 = 4.6 V
47 = 4.7 V
48 = 4.8 V
49 = 4.9 V
50 = 5.0 V
51 = 5.1 V
52 = 5.2 V
53 = 5.3 V
54 = 5.4 V
L: Tape Left
CONSTANT
CURRENT
SOURCE
TEMPERATURE CODE
C: Standard Temp. Range
I: Extended Temp. Range
-
+
THERMAL AND
OVERCURRENT
PROTECTION
CONTROL
PACKAGE CODE
S: SOT23-5
BANDGAP
REFERENCE
TOLERANCE CODE
DISCONNECT
CIRCUIT
H: 1 % Output Voltage Tolerance
(Not available in I temp code)
CAPACITOR CODE
None: Ceramic Capacitor
A: Tantalum Capacitor
*Check Table 4
for availability.
GND
NOISE
BYPASS
December 1999 TOKO, Inc.
Page 1
TK716xx
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Power Dissipation (Note 1) ................................ 500 mW
Reverse Bias Voltage................................................. 6 V
Control Terminal Voltage ......................................... 12 V
Noise Bypass Terminal Voltage ................................. 5 V
Operating Voltage Range............................... 1.8 to 12 V
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature (Ambient) Range
TK716xx SCL, TK716xx SCLH ............ -30 to +80 °C
TK716xx SIL.......................................... -40 to +85 °C
Junction Temperature (Operating) ........................ 125 °C
Junction Temperature (Shutdown)........................ 150 °C
Lead Soldering Temperature (10 s) ...................... 235 °C
TK716xx SCL AND TK716xx SCLH ELECTRICAL CHARACTERISTICS
Test conditions: VIN = VOUT(TYP) + 1 V, TA = 25 °C, unless otherwise specified.
SYMBOL
IQ
PARAMETER
Quiescent Current
TEST CONDITIONS
IOUT = 0 mA, Excluding ICONT
VIN = 8 V, Output OFF (VCONT ≤ 0.15 V)
VIN = 0 V, VREV = 5 V, Output OFF
IOUT = 50 mA
MIN
TYP MAX
UNITS
µA
70
100
0.1
50
ISTBY
IREV
Standby Current
µA
Reverse Bias Current
GND Pin Current
1
1
nA
IGND
1.8
150
200
mA
mA
mA
V
IOUT
Continuous Output Current
IOUT(PULSE) Pulse Output Current
10 ms pulse, Duty Cycle = 40 %
VIN = VOUT(TYP) + 1 V, IOUT = 5 mA
VOUT
Output Voltage
See Table 1 and 2
20
∆VOUT /∆T
Temperature Coefficient
ppm/° C
mV
mV
mV
mV
mV
mV
mV
mV
Line Reg Line Regulation
Load Reg Load Regulation
VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V
1 mA < IOUT < 50 mA
1 mA < IOUT < 100 mA
1 mA < IOUT < 150 mA
IOUT = 50 mA
2
4
15
18
7
28
12
90
140
200
200
50
160
230
300
350
IOUT = 100 mA
VDROP
Dropout Voltage
VOUT ≥ 2.4 V
I
OUT = 150 mA
VOUT < 2.4 V
Noise Bypass Terminal
Voltage
Vref
1.26
V
CONTROL TERMINAL SPECIFICATIONS
ICONT
Control Current
VOUT = 1.6 V, Output ON
Output ON
10
µA
V
VCONT(ON)
Control Voltage ON
1.6
VCONT(OFF) Control Voltage OFF
Output OFF
0.6
V
Note 1: Power dissipation is 500 mW when mounted as recommended. Derate at 4.0 mW/°C for operation above 25 °C.
Gen Note: Exceeding the “Absolute Maximum Ratings” may damage the device.
Gen Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.
Gen Note: Ripple rejection is @ 60 dB when f = 400 Hz, CL = 10 µF, CN = 0.1 µF, input noise = 100 mVrms, VIN = VOUT(TYP) + 1.5 V and IOUT = 30 mA.
Gen Note: Output noise is 0.13 ~ 0.23 µV/ Hz at 1 kHz when CN = 0.1 µF.
Page 2
December 1999 TOKO, Inc.
TK716xx
TK716xx SCL ELECTRICAL CHARACTERISTICS TABLE 1
Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 5 mA, TA = 25 °C, unless otherwise specified.
Output
Voltage
Voltage
Code
VOUT(MIN)
VOUT(MAX)
Output
Voltage
Voltage
Code
VOUT(MIN)
VOUT(MAX)
3.4 V
3.5 V
3.6 V
3.7 V
3.8 V
3.9 V
4.0 V
4.1 V
4.2 V
4.3 V
4.4 V
4.5 V
4.6 V
4.7 V
4.8 V
4.9 V
5.0 V
5.1 V
5.2 V
5.3 V
5.4 V
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
3.232 V
3.430 V
3.528 V
3.626 V
3.724 V
3.822 V
3.920 V
4.018 V
4.116 V
4.214 V
4.312 V
4.410 V
4.508 V
4.606 V
4.704 V
4.802 V
4.900 V
4.998 V
5.096 V
5.194 V
5.292 V
3.468 V
3.570 V
3.672 V
3.774 V
3.876 V
3.978 V
4.080 V
4.182 V
4.284 V
4.386 V
4.488 V
4.590 V
4.692 V
4.794 V
4.896 V
5.008 V
5.100 V
5.202 V
5.304 V
5.406 V
5.508 V
1.3 V
1.4 V
1.5 V
1.6 V
1.7 V
1.8 V
1.9 V
2.0 V
2.1 V
2.2 V
2.3 V
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
1.240 V
1.340 V
1.440 V
1.540 V
1.650 V
1.740 V
1.870 V
1.940 V
2.040 V
2.140 V
2.240 V
2.340 V
2.440 V
2.540 V
2.640 V
2.740 V
2.840 V
2.940 V
3.038 V
3.136 V
3.234 V
1.360 V
1.460 V
1.560 V
1.660 V
1.760 V
1.860 V
1.960 V
2.060 V
2.160 V
2.260 V
2.360 V
2.460 V
2.560 V
2.660 V
2.760 V
2.860 V
2.960 V
3.060 V
3.162 V
3.264 V
3.366 V
TK716xx SCLH ELECTRICAL CHARACTERISTICS TABLE 2
Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 5 mA, TA = 25 °C, unless otherwise specified.
Output
Voltage
Voltage
Code
VOUT(MIN)
VOUT(MAX)
Output
Voltage
Voltage
Code
VOUT(MIN)
VOUT(MAX)
2.0 V
2.1 V
2.2 V
2.3 V
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 V
3.6 V
3.7 V
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
1.960 V
2.060 V
2.160 V
2.260 V
2.360 V
2.460 V
2.560 V
2.660 V
2.760 V
2.860 V
2.960 V
3.060 V
3.160 V
3.260 V
3.360 V
3.460 V
3.560 V
3.660 V
2.040 V
2.140 V
2.240 V
2.340 V
2.440 V
2.540 V
2.640 V
2.740 V
2.840 V
2.940 V
3.040 V
3.140 V
3.240 V
3.340 V
3.440 V
3.540 V
3.640 V
3.740 V
3.8 V
3.9 V
4.0 V
4.1 V
4.2 V
4.3 V
4.4 V
4.5 V
4.6 V
4.7 V
4.8 V
4.9 V
5.0 V
5.1 V
5.2 V
5.3 V
5.4 V
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
3.760 V
3.860 V
3.960 V
4.059 V
4.158 V
4.247 V
4.356 V
4.455 V
4.554 V
4.653 V
4.752 V
4.851 V
4.950 V
5.049 V
5.148 V
5.247 V
5.346 V
3.840 V
3.940 V
4.040 V
4.141 V
4.242 V
4.343 V
4.444 V
4.545 V
4.646 V
4.747 V
4.848 V
4.949 V
5.050 V
5.151 V
5.252 V
5.353 V
5.454 V
December 1999 TOKO, Inc.
Page 3
TK716xx
TK716xx SIL ELECTRICAL CHARACTERISTICS
Test conditions: VIN = VOUT(TYP) + 1 V, TA = 25 °C, unless otherwise specified.
SYMBOL
IQ
PARAMETER
Quiescent Current
TEST CONDITIONS
IOUT = 0 mA, Excluding ICONT
VIN = 8 V, Output OFF
MIN
TYP
MAX
100
0.2
UNITS
µA
70
ISTBY
IREV
Standby Current
µA
Reverse Bias Current
GND Pin Current
VIN = 0 V, VREV = 5 V, Output OFF
IOUT = 50 mA
1
1
70
nA
IGND
2.0
mA
IOUT
Continuous Output Current
150
200
mA
IOUT(PULSE) Pulse Output Current
10 ms pulse, Duty Cycle = 40 %
VIN = VOUT(TYP) + 1 V, IOUT = 5 mA
mA
VOUT
Output Voltage
See Table 3
20
V
∆VOUT /∆T
Temperature Coefficient
ppm/° C
VIN = VOUT(TYP) + 1 V to
Line Reg Line Regulation
Load Reg Load Regulation
2
17
mV
V
OUT(TYP) + 6 V
1 mA < IOUT < 50 mA
1 mA < IOUT < 100 mA
IOUT = 50 mA
4
20
30
mV
mV
mV
mV
mV
V
7
90
160
240
310
VDROP
Dropout Voltage
IOUT = 100 mA
150
200
1.26
I
OUT = 150 mA
Vref
Noise Bypass Terminal Voltage
CONTROL TERMINAL SPECIFICATIONS
ICONT
Control Current
VOUT = 1.6 V, Output ON
Output ON
10
µA
V
VCONT(ON)
Control Voltage ON
1.8
VCONT(OFF) Control Voltage OFF
Output OFF
0.4
V
Gen Note: Exceeding the “Absolute Maximum Ratings” may damage the device.
Gen Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.
Gen Note: Ripple rejection is @ 60 dB when f = 400 Hz, CL = 10 µF, CN = 0.1 µF, input noise = 100 mVrms, VIN = VOUT(TYP) + 1.5 V and IOUT = 30 mA.
Gen Note: Output noise is 0.13 ~ 0.23 µV/ Hz at 1 kHz when CN = 0.1 µF.
Page 4
December 1999 TOKO, Inc.
TK716xx
TK716xx SIL ELECTRICAL CHARACTERISTICS TABLE 3
Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 5 mA, TA = 25 °C, unless otherwise specified.
Room Temp. Range (TA = 25 °C)
Full Temp. Range (TA = -40 to +85 °C)
Output
Voltage
Voltage
Code
VOUT(MIN)
VOUT(MAX)
VOUT(MIN)
VOUT(MAX)
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 V
3.6 V
3.7 V
3.8 V
3.9 V
4.0 V
4.1 V
4.2 V
4.3 V
4.4 V
4.5 V
4.6 V
4.7 V
4.8 V
4.9 V
5.0 V
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
2.360 V
2.460 V
2.560 V
2.660 V
2.760 V
2.860 V
2.960 V
3.060 V
3.160 V
3.260 V
3.360 V
3.460 V
3.560 V
3.660 V
3.760 V
3.860 V
3.960 V
4.059 V
4.158 V
4.257 V
4.356 V
4.455 V
4.554 V
4.653 V
4.752 V
4.851 V
4.950 V
2.440 V
2.540 V
2.640 V
2.740 V
2.840 V
2.940 V
3.040 V
3.140 V
3.240 V
3.340 V
3.440 V
3.540 V
3.640 V
3.740 V
3.840 V
3.940 V
4.040 V
4.141 V
4.242 V
4.343 V
4.444 V
4.545 V
4.646 V
4.747 V
4.848 V
5.049 V
5.050 V
2.320 V
2.420 V
2.520 V
2.620 V
2.720 V
2.820 V
3.920 V
3.020 V
3.120 V
3.220 V
3.320 V
3.420 V
3.520 V
3.620 V
3.720 V
3.820 V
3.920 V
4.009 V
4.108 V
4.197 V
4.306 V
4.405 V
4.504 V
4.603 V
4.702 V
4.801 V
4.900 V
2.480 V
2.580 V
2.680 V
2.780 V
2.880 V
2.980 V
3.080 V
3.180 V
3.280 V
3.380 V
3.480 V
3.580 V
3.680 V
3.780 V
3.880 V
3.980 V
4.090 V
4.191 V
4.292 V
4.893 V
4.494 V
4.595 V
4.496 V
4.497 V
4.898 V
5.099 V
5.100 V
December 1999 TOKO, Inc.
Page 5
TK716xx
VOLTAGE AVAILABILITY TABLE 4
Output
TK716xxSCL
TK716xxASCL
TK716xxSCLH
TK716ASCLH
TK716xxSIL
TK716xxASIL
Voltage
1.3 V
1.4 V
1.5 V
1.6 V
1.7 V
1.8 V
1.9 V
2.0 V
2.1 V
2.2 V
2.3 V
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 V
3.6 V
3.7 V
3.8 V
3.9 V
4.0 V
4.1 V
4.2 V
4.3 V
4.4 V
4.5 V
4.6 V
4.7 V
4.8 V
4.9 V
5.0 V
5.1 V
5.2 V
5.3 V
5.4 V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Note: X denotes voltage presently available. Consult factory for availability of other voltages.
Page 6
December 1999 TOKO, Inc.
TK716xx
TEST CIRCUIT
I
IN
V
OUT
V
IN
+
+
+
V
V
OUT
IN
C
= 1.0 µF
I
OUT
IN
GND
C
= 3.3 µF
L
NOISE BYPASS
CONT
I
CONT
C
V
N = 0.01 µF
CONT
TYPICAL PERFORMANCE CHARACTERISTICS
OUTPUT VOLTAGE VS
.
LOAD REGULATION
SHORT CIRCUIT PROTECTION
INPUT VOLTAGE
V
TYPICAL
OUT
5
4
3
2
I
= 25 mA
OUT
I
= 0 mA
OUT
V
TYPICAL
OUT
I
= 150 mA
OUT
1
0
I
is changed
by 25 mA step.
OUT
0
50
100
(mA)
150
0
150
300
0
V
= V
OUT
IN
I
I
(mA)
V
(50 MV/DIV)
IN
OUT
OUT
DROPOUT VOLTAGE VS.
OUTPUT CURRENT
REVERSE LEAKAGE CURRENT VS.
TEMPERATURE
LINE REGULATION
4
3
2
V
TYPICAL
V
V
, V
IN CONT FLOATING
OUT
OUT
0
-50
= 5 V SOURCE
-100
-150
-200
1
0
-250
0
10
20
0
25
50
(°C)
75
100
0
100
200
V
(V)
I
(mA)
T
A
IN
OUT
December 1999 TOKO, Inc.
Page 7
TK716xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
REVERSE BIAS CURRENT
REVERSE BIAS CURRENT VS.
TEMPERATURE (V = 0 V)
(V = 0 V)
IN
IN
IE-3
IE-6
IE-3
IE-6
IE-9
IE-9
IE-12
IE-12
0
5
10
0
25
50
(°C)
75
100
V
(V)
T
A
REV
STANDBY CURRENT VS.
INPUT VOLTAGE
QUIESCENT CURRENT (ON MODE)
VS. INPUT VOLTAGE
IE-7
IE-8
I
= 0 mA
2.0
1.0
0
OUT
V
= 3 V
OUT
IE-9
V
= 4 V
OUT
IE-10
V
= 5 V
OUT
IE-11
IE-12
0
10
20
0
10
(V)
20
V
(V)
V
IN
IN
CONTROL CURRENT (ON MODE)
VS. CONTROL PIN VOLTAGE
GROUND CURRENT
I
= 0 mA
5.0
2.5
0
OUT
4
2
I
= 90 mA
OUT
V
OUT
I
= 60 mA
= 30 mA
OUT
I
OUT
0
-50
0
2.5
5
0
50
100
V
(V)
T
(°C)
CONT
A
Page 8
December 1999 TOKO, Inc.
TK716xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
DROPOUT VOLTAGE
CONTROL CURRENT
5
4
I
= 150 mA
OUT
200
I
= 90 mA
OUT
V
= 3.3 V
CONT
3
2
150
100
I
= 60 mA
OUT
I
= 30 mA
V
0
= 1.8 V
50
OUT
CONT
50
0
1
0
I
= 1mA
50
OUT
-50
0
100
-50
100
T
A
(°C)
T
A
(°C)
OUTPUT VOLTAGE TEMPERATURE
COEFFICIENT
MAXIMUM OUTPUT CURRENT
340
320
300
280
260
10
0
-10
-20
-30
V
= 3 V
OUT
-50
0
50
100
-50
0
50
100
T
(°C)
T (°C)
A
A
RIPPLE REJECTION
OUTPUT NOISE DENSITY
10
0
-20
-40
-60
I
C
= 30 mA
OUT
= 2.2 µF
I
=30 mA
L
OUT
C
= 0.001 µF
NP
1.0
C
= 3.3 µF
= 0.01 µF
L
C
C
= 0.01 µF
N
NP
0.1
C
= 3.3 µF
= 0.1 µF
C
= 0.1 µF
L
NP
-80
C
N
-100
0
100
I K
10 K
100 K
0.01
0.1
1
10
100
f (kHz)
f (Hz)
December 1999 TOKO, Inc.
Page 9
TK716xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
OUTPUT VOLTAGE RESPONSE 1
(OFF ~ ON)
NOISE LEVEL VS. C
N
I
= 10 mA, C = 1000 pF
N
LOAD
C
= 2.2 µF
250
200
150
100
L
L
C
L
= 2.2 µF
C
= 3.3 µF
L
C
= 4.7 µF
L
C
= 10 µF
C
= 3.3 µF
L
50
0
C
= 10 µF
L
0
20
40
TIME (µs)
60
80
1 pF
100 pF
0.01 µF
10 pF
1000 pF
0.1 µF
C
N
OUTPUT VOLTAGE RESPONSE 2
(OFF ~ ON)
LINE VOLTAGE STEP RESPONSE 1
V +2 V
OUT
I
= 30 mA, C = 3.3 µF
L
LOAD
V
+1 V
OUT
C
= 1000 pF
N
C
= 0.001 µF, C = 2.2 µF
N
L
C
= 0.1 µF
N
C
= 0.01 µF
N
C
= 0.01 µF, C = 2.2 µF
L
N
0
200
400
TIME (µs)
600
800
TIME (50 µs/ DIV)
LOAD CURRENT STEP RESPONSE 1
LINE VOLTAGE STEP RESPONSE 2
V +2 V
OUT
V
+1 V
C
= 0.01 µF, C = 2.2 µF
L
OUT
N
C
= 0.01 µF, C = 3.3 µF
N
L
I
= 30 to 60 mA
OUT
I
= 5 to 35 mA
OUT
I
= 0 to 30 mA
C
= 0.01 µF, C = 10 µF
L
OUT
N
TIME (2.5 µs/ DIV)
TIME (50 µs/ DIV)
Page 10
December 1999 TOKO, Inc.
TK716xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
CONTROL VOLTAGE VS.
TEMPERATURE
LOAD CURRENT STEP RESPONSE 2
= 0.01 µF, C = 2.2 µF
2.0
1.5
1.0
0.5
0
C
N
L
OUTPUT ON
OUTPUT OFF
I
= 35 to 5 mA
OUT
I
= 60 to 30 mA
OUT
I
= 30 to 0 mA
OUT
0
25
50
(°C)
75
100
T
TIME (2.5 µs/ DIV)
A
CONTROL CURRENT VS.
TEMPERATURE
SHORT CIRCUIT CURRENT VS.
INPUT VOLTAGE
5.0
4.0
400
300
200
100
0
V
= 5.0 V
CONT
3.0
2.0
1.0
0
V
IS CONNECTED TO GND
OUT
V
= 2.0 V
75
CONT
0
25
50
(°C)
100
0
2
4
6
8
T
A
V
(V)
IN
GROUND CURRENT VS.
OUTPUT CURRENT
DROPOUT CHARACTERISTICS
40
30
20
10
0
V
OUT
I
= 0 mA
OUT
I
= 80 mA
OUT
0
0.9
40
50 120 160 200
(mA)
V
= V
IN OUT
I
V
(1 V/ DIV)
IN
OUT
December 1999 TOKO, Inc.
Page 11
TK716xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
GROUND CURRENT VS. INPUT
SUPPLY VOLTAGE (V = 3.6 V)
GROUND CURRENT VS.
TEMPERATURE
OUT
4
3
2
1
4
3
2
1
0
I
OUT
= 80 mA
I
= 50 mA
OUT
I
= 50 mA
OUT
I
= 0 mA
3
I
OUT
= 0 mA
OUT
0
0
1
2
4
5
0
25
50
(°C)
75
100
V
(V)
T
A
IN
INSTANTANEOUS SHORT CIRCUIT
CURRENT VS. TEMPERATURE
400
300
200
V
C
= V
+1
OUT
IN
= 2.2 µF TANTALUM
L
100
0
0
25
50
(°C)
75
100
T
A
Page 12
December 1999 TOKO, Inc.
TK716xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
OUTPUT VOLTAGE (VOUT
)
RIPPLE REJECTION RATIO (RR)
The output voltage is specified with VIN = (VOUT(TYP) + 1 V)
and IOUT = 5 mA.
Ripple rejection is the ability of the regulator to attenuate
the ripple content of the input voltage at the output. It is
specified with 100 mVrms, 400 Hz superimposed on the
input voltage, where VIN = VOUT + 1.5 V. The output
decoupling capacitor is set to 10 µF, the noise bypass
capacitor is set to 0.1 µF, and the load current is set to
30 mA. Ripple rejection is the ratio of the ripple content of
the output vs. the input and is expressed in dB.
DROPOUT VOLTAGE (VDROP
)
The dropout voltage is the difference between the input
voltage and the output voltage at which point the regulator
starts to fall out of regulation. Below this value, the output
voltage will fall as the input voltage is reduced. It is
dependent upon the load current and the junction
temperature.
STANDBY CURRENT (ISTBY
)
Standbycurrentisthecurrentwhichflowsintotheregulator
when the output is turned off by the control function
(VCONT = 0 V). It is measured with VIN = 8 V.
CONTINUOUS OUTPUT CURRENT (IOUT
)
Normaloperatingoutputcurrent.Thisislimitedbypackage
power dissipation.
SENSOR CIRCUITS
Overcurrent Sensor
PULSE OUTPUT CURRENT (IOUT (PULSE)
)
Maximum pulse width 10 ms; duty cycle is 40%: pulse load
only.
The overcurrent sensor protects the device if the output is
shorted to ground.
LINE REGULATION (Line Reg)
Thermal Sensor
Line regulation is the ability of the regulator to maintain a
constant output voltage as the input voltage changes. The
line regulation is specified as the input voltage is changed
from VIN = VOUT + 1 V to VIN = VOUT + 6 V.
The thermal sensor protects the device if the junction
temperature exceeds the safe value (Tj = 150 °C). This
temperaturerisecanbecausedbyextremeheat,excessive
power dissipation caused by large output voltage drops, or
excessive output current. The regulator will shut off when
the temperature exceeds the safe value. As the junction
temperature decreases, the regulator will begin to operate
again. Under sustained fault conditions, the regulator
output will oscillate as the device turns off then resets.
Damage may occur to the device under extreme fault
conditions.
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
with the input voltage set to VIN = VOUT +1 V. The load
regulation is specified under three output current step
conditions of 1 mA to 50 mA, 1 mA to 100 mA and 1 mA to
150 mA.
Reverse Voltage Protection
Reverse voltage protection prevents damage due to the
output voltage being higher than the input voltage. This
faultconditioncanoccurwhentheoutputcapacitorremains
charged and the input is reduced to zero, or when an
external voltage higher than the input voltage is applied to
the output side.
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 control
current.
December 1999 TOKO, Inc.
Page 13
TK716xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
The range of usable currents can also be found from the
graph below.
PACKAGE POWER DISSIPATION (PD)
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 recommended mounting pad, the power dissipation of
the SOT23-5 is increased to 500 mW. For operation at
ambient temperatures over 25 °C, the power dissipation of
the SOT23-5 device should be derated at 4.0 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:
(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
)
Tj = 0jA x PD + TA
500
MOUNTED AS
SHOWN
For Toko ICs, the internal limit for junction temperature is
150 °C. If the ambient temperature (TA) is 25 °C, then:
400
300
200
100
0
FREE AIR
150 °C = 0jA x PD + 25 °C
0jA = 125 °C / PD
PD is the value when the thermal protection circuit is
activated. A simple way to determine PD is to calculate VIN
xIIN whentheoutputsideisshorted.Inputcurrentgradually
falls as temperature rises. You should use the value when
thermal equilibrium is reached.
0
50
100
150
T
(°C)
A
SOT23-5 POWER DISSIPATION CURVE
Page 14
December 1999 TOKO, Inc.
TK716xx
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output capacitors in order to maintain regulator loop stability. The equivalent series
resistance (ESR) of the output capacitor must be in the stable operation area. Since the ESR varies widely between
ceramic and tantalum capacitors, the proper IC must be selected according to the output capacitor used:
The TK716xxS is designed for use with ceramic output capacitors.
(Chip tantalum capacitors and electrolytic capacitors with an ESR below 6 Ω can provide stable operation.)
The TK716xxAS is designed for use with tantalum output capacitors.
The DC electrical characteristics and the specifications of the TK716xxS and TK716xxAS are the same; only the value
of the internal phase compensation is different. Increasing the value of the required output capacitor does not cause
abnormal operation. Increasing the value can improve noise reduction, line regulation, load regulation, and stability.
For stable operation, an input capacitor of 0.22 µF or more is required.
Note: it is very important to check the selected manufacturers’ electrical characteristics. The values of capacitance and
ESR vary from manufacturer to manufacturer, and with product type. A thorough examination is necessary to determine
the characteristics of the capacitor in mass production. The characteristics also vary over temperature. In general, it is
recommended to use as large a value of output capacitance as is practical. Please refer to the following graphs for output
capacitor selection.
Output side capacitor CL = 2.2 µF
TK71630AS
TK71630S
100
10
1
100
10
1
Stable area
Stable area
0.1
0.1
3.3 µF
0.01
0.01
0
50
I
100
130
0
50
100
130
(mA)
I
(mA)
OUT
OUT
December 1999 TOKO, Inc.
Page 15
TK716xx
APPLICATION INFORMATION (CONT.)
The value of ESR between ceramic and tantalum capacitors differs by about two orders of magnitude as illustrated below.
The characteristics of tantalum capacitors also vary widely according to manufacturer. The output capacitor becomes
a part of the phase compensation in a LDO regulator using a PNP pass transistor. Because of this, it is necessary to
optimize the phase compensation in the IC for use with ceramic or tantalum capacitors.
ESR vs. TEMPERATURE
at 100 kHZ
10
1
Tantalum Cap
Ceramic Cap
0.1
0.01
-20
0
50 60
TEMPERATURE (°C)
BOARD LAYOUT
GND
V
V
OUT
IN
+
+
NOISE
BYPASS
CONTROL
SOT23-5 BOARD LAYOUT
Page 16
December 1999 TOKO, Inc.
TK716xx
APPLICATION INFORMATION (CONT.)
REVERSE BIAS PROTECTION
The high output voltage accuracy and low dropout voltage
are maintained when the IC is turned ON/OFF by using the
control pin as illustrated below.
The internal reverse bias protection eliminates the
requirement for a reverse voltage protection diode. This
saves both cost and board space.
V
IN
V
OUT
V
IN
µ PRO
TK716xxS
V
V
OUT
IN
TK716xxS
V
CONT
GND
GND
High-side switching with a FET is illustrated below. Battery
life is extended by the dropout voltage of the FET when the
input of the TK716xx is connected in front of the FET
switch.
Another reverse bias protection technique is illustrated
below. The extra diode and extra capacitor are not
necessary with the TK716xx. The high output voltage
accuracy is maintained because the diode forward voltage
variations over temperature and load current have been
eliminated.
FET SWITCHING OUTPUT
V
IN
V
OUT
716xx
V
CONT
V
V
OUT
IN
TK716xxS
VOLTAGE BACKUP OPERATION (HOLDUP TIME)
CL becomes the backup power supply when the
microprocessor is reset with the voltage detector IC
simultaneously with the turning OFF the TK716xx. CL
provides the holdup time necessary to do an orderly
shutdown of the microprocessor.
HIGH-SIDE SWITCHING
High-side switching should not be implemented by an
externaltransistorasshownbelow.Thisresultsinadditional
voltage drop and loss of accuracy.
V
IN
V
OUT
V
DROP
VOLTAGE
DETECTOR IC
TK716xxS
µ PRO
RESET
OFF
C
L
V
V
OUT
CONT
VOLTAGE
REGULATOR
GND
ON/OFF
CONTROL
December 1999 TOKO, Inc.
Page 17
TK716xx
APPLICATION INFORMATION (CONT.)
PARALLEL ON/OFF CONTROL
The figure below illustrates multiple regulators being
controlled by a single ON/OFF control signal. The series
resistor R is put in the input line of the low output voltage
regulator in order to prevent overdissipation. The voltage
dropped across the resistor reduces the large input-to-
output voltage across the regulator, reducing the power
dissipation in the device.
V
V
OUT
IN
TK716xx
ON/OFF LOGIC
CMOS
REGULATOR
V
IN
5 V
3 V
CURRENT BOOST OPERATION
TK71650
TK71630
The output current can be increased by connecting an
external PNP transistor as shown below. The output
current capability depends upon the Hfe of the external
transistor. Note: The TK716xx internal short circuit
protection and thermal sensor do not protect the external
transistor.
R
2 V
TK71620
ON/OFF CONTROL
V
IN
SWITCHING OPERATION
V
IN
V
OUT
Even though the input voltages or the output voltages are
different, the outputs of the TK716xx regulators can be
connected together, and the output voltages switched. If
two or more TK716xx regulators are turned ON
simultaneously, the highest output voltage will be present.
TK716xx
150 Ω
0.22 µF
V
CONT
V
V
IN
TK71630
TK71628
V
CONT
V
IN
OUT
3.0 OR 2.8 V
V
CONT
ON/OFF LOGIC
TheoutputsoftheTK716xxregulatorandaCMOSregulator
can be connected together as long as the output voltage of
the TK716xx is greater than the CMOS regulator. When
the TK716xx is OFF, the CMOS regulator is turned ON.
When the TK716xx is ON, the CMOS regulator is turned
OFF.
Page 18
December 1999 TOKO, Inc.
TK716xx
NOTES
December 1999 TOKO, Inc.
Page 19
TK716xx
PACKAGE OUTLINE
Marking Information
SOT23-5
Part Number
TK716xxS
Marking
TK716xxAS
0.7
Marking
TK71613
TK71614
TK71615
TK71616
TK71617
TK71618
TK71619
TK71620
TK71621
TK71622
TK71623
TK71624
TK71625
TK71626
TK71627
TK71628
TK71629
TK71630
TK71631
TK71632
TK71633
TK71634
TK71635
TK71636
TK71637
TK71638
TK71639
TK71640
TK71641
TK71642
TK71643
TK71644
TK71645
TK71646
TK71647
TK71648
TK71649
TK71650
TK71651
TK71652
TK71653
TK71654
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
L31
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
L44
L45
L46
L47
L48
L49
L50
L51
L52
L53
L54
13L
14L
15L
16L
17L
18L
19L
20L
21L
22L
23L
24L
25L
26L
27L
28L
29L
30L
31L
32L
33L
34L
35L
36L
37L
38L
39L
40L
41L
42L
43L
44L
45L
46L
47L
48L
49L
50L
51L
52L
53L
54L
Marking
5
4
e
e
0.95
0.95
e'
1.90
+0.15
0.4 -0.05
1
2
3
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)
Check Table 4 for availability.
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 20
December 1999 TOKO, Inc.
© 1999 Toko, Inc.
IC-216-TK716xx
0798O0.0K
Printed in the USA
All Rights Reserved
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