TK715xx
LOW DROPOUT VOLTAGE REGULATOR
FEATURES
s
High Voltage Precision at
±
2.0% or
±
60 mV
s
Very Low Quiescent Current
s
Very Low Dropout Voltage
s
Reverse Bias Protection
s
Miniature Package (SOT-23-3)
s
Short Circuit Protection
s
High Ripple Rejection
APPLICATIONS
s
Battery Powered Systems
s
Cellular Telephones
s
Pagers
s
Personal Communications Equipment
s
Portable Instrumentation
s
Portable Consumer Equipment
s
Radio Control Systems
s
Toys
s
Low Voltage Systems
DESCRIPTION
The TK715xx is a low dropout linear regulator housed in a
small SOT-23-3 package, rated at 350 mW. An internal
PNP transistor is used to achieve a low dropout voltage of
105 mV (typ.) at 50 mA load current. This device offers high
precision output voltage of
±
2.0 % or
±
60 mV. The
TK715xx has a very low quiescent current of 25
µA
(typ.)
at no load. The low quiescent current and dropout voltage
make this part ideal for battery powered applications. The
internal reverse bias protection eliminates the requirement
for a reverse voltage protection diode, saving cost and
board space. The high 64 dB ripple rejection and low noise
provide enhanced performance for critical applications.
TK715xxS
VIN
20P
GND
VOUT
ORDERING INFORMATION
TK715
Voltage Code
SCL
Tape/ Reel Code
Temp. Code
Package Code
VIN
BLOCK DIAGRAM
VOUT
THERMAL
PROTECTION
VOLTAGE CODE
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
60 = 6.0 V
70 = 7.0 V
80 = 8.0 V
90 = 9.0 V
TEMPERATURE CODE
C -30 to +80 C
TAPE/REEL CODE
L: Tape Left
PACKAGE CODE
S : SOT-23-3
-
+
-
+
BANDGAP
REFERENCE
GND
January 1999 TOKO, Inc.
Page 1
TK715xx
ABSOLUTE MAXIMUM RATINGS (V
OUT
≥
5.0 V)
Supply Voltage .............................................. -0.4 to 16 V
Power Dissipation (Note 1) ................................ 350 mW
Reverse Bias .............................................................. 8 V
Storage Temperature (Ambient) ............... -55 to +150
°C
Operating Temperature (Ambient) .............. -30 to +80
°C
Max. Operating Temperature (Junction) ............... 125
°C
Operating Voltage Range ............................ 1.8 to 14.0 V
Junction Temperature ........................................... 150
°C
Lead Soldering Temperature (10 s) ...................... 235
°C
TK715xx ELECTRICAL CHARACTERISTICS (V
OUT
≥
5.0 V)
Test conditions: T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
I
GND
V
OUT
L ine R e g
PARAMETER
Quiescent Current
Ground Current
Output Voltage
Line Regulation
TEST CONDITIONS
I
OUT
= 0 mA, V
OUT
≤
4.0 V
I
OUT
= 0 mA, V
OUT
≥
4.1 V
I
OUT
= 50 mA
I
OUT
= 10 mA
V
IN
= V
OUT(TYP)
+ 1 V to
V
OUT(TYP)
+ 6 V
I
OUT
= 5 to 50 mA, (Note 2)
I
OUT
= 5 to 100 mA, (Note 2)
I
OUT
= 50 mA
V
DROP
Dropout Voltage
I
OUT
= 100 mA, V
OUT
≥
2.4 V
I
OUT
= 100 mA, V
OUT
< 2.4 V
I
OUT
RR
∆V
OUT
/
∆T
Continuous Output Current
Ripple Rejection
Temperature Coefficient
(Notes 3,4)
I
OUT
= 10 mA
64
35
MI N
TYP
25
30
1.4
See Table 1
1.0
10
20
0.105
0.185
0.185
10
30
50
.0180
0.280
0.330
100
MAX
45
50
2.5
UNITS
µA
µA
mA
V
mV
mV
mV
V
V
V
mA
dB
ppm/° C
Load Reg
Load Regulation
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25
°C.
Note 2: Refer to “Definition of Terms.”
Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 4: Ripple rejection is measured at V
R
= 200 mVrms, V
IN
= V
OUT(TYP)
+ 2 V, I
OUT
= 10 mA, C
L
= 4.7
µF,
f = 100 Hz.
Gen. Note: Parameters with min. or max. values are 100% tested at T
A
= 25
°C.
Page 2
January 1999 TOKO, Inc.
TK715xx
ABSOLUTE MAXIMUM RATINGS (V
OUT
≤
6.0 V)
Supply Voltage .............................................. -0.4 to 16 V
Power Dissipation (Note 1) ................................ 350 mW
Reverse Bias .............................................................. 8 V
Storage Temperature (Ambient) ............... -55 to +150
°C
Operating Temperature (Ambient) ..............-30 to +80
°C
Max. Operating Temperature (Junction) ............... 125
°C
Operating Voltage Range ............................ 2.5 to 14.0 V
Junction Temperature ........................................... 150
°C
Lead Soldering Temperature (10 s) ...................... 235
°C
TK715xx ELECTRICAL CHARACTERISTICS (V
OUT
≤
6.0 V)
Test conditions: T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
I
GND
V
OUT
Line Reg
PARAMETER
Quiescent Current
Ground Current
Output Voltage
Line Regulation
TEST CONDITIONS
I
OUT
= 0 mA
I
OUT
= 50 mA
I
OUT
= 10 mA
V
IN
= V
OUT(TYP)
+ 1 V to
V
OUT(TYP)
+ 6 V or Max 14 V
I
OUT
= 5 to 50 mA, (Note 2)
I
OUT
= 5 to 100 mA, (Note 2)
V
DROP
I
OUT
RR
∆V
OUT
/
∆T
Dropout Voltage
Continuous Output Current
Ripple Rejection
Temperature Coefficient
(Notes 3,4)
I
OUT
= 10 mA
64
35
I
OUT
= 50 mA
I
OUT
= 100 mA
MIN
TYP
32
1.4
See Table 1
3.0
10
20
0.105
0.185
30
50
.0180
0.280
100
MAX
60
2.5
UNITS
µA
mA
V
mV
mV
mV
V
V
mA
dB
ppm/° C
Load Reg
Load Regulation
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25
°C.
Note 2: Refer to “Definition of Terms.”
Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 4: Ripple rejection is measured at V
R
= 200 mVrms, V
IN
= V
OUT(TYP)
+ 2 V, I
OUT
= 10 mA, C
L
= 4.7
µF,
f = 100 Hz.
Gen. Note: Parameters with min. or max. values are 100% tested at T
A
= 25
°C.
January 1999 TOKO, Inc.
Page 3
TK715xx
TK715xx ELECTRICAL CHARACTERISTICS TABLE 1
Output
Voltage
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
Voltage
Code
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
V
OUT(MIN)
1.840 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
3.040 V
3.140 V
3.240 V
3.335 V
3.435 V
3.535 V
V
OUT(MAX)
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
3.465 V
3.565 V
3.665 V
Test
Voltage
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
Output
Voltage
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
6.0 V
7.0 V
8.0 V
9.0 V
Voltage
Code
37
38
39
40
41
42
43
44
45
46
47
48
49
50
60
70
80
90
V
OUT(MIN)
3.630 V
3.725 V
3.825 V
3.920 V
4.020 V
4.120 V
4.215 V
4.315 V
4.410 V
4.510 V
4.605 V
4.705 V
4.800 V
4.900 V
5.880 V
6.860 V
7.840 V
8.820 V
V
OUT(MAX)
3.770 V
3.875 V
3.975 V
4.080 V
4.180 V
4.280 V
4.385 V
4.485 V
4.590 V
4.690 V
4.795 V
4.895 V
5.000 V
5.100 V
6.120 V
7.140 V
8.160 V
9.180 V
Test
Voltage
4.7 V
4.8 V
4.9 V
5.0 V
5.1 V
5.2 V
5.3 V
5.4 V
5.5 V
5.6 V
5.7 V
5.8 V
5.9 V
6.0 V
7.0 V
8.0 V
9.0 V
9.0 V
Page 4
January 1999 TOKO, Inc.
TK715xx
TEST CIRCUIT
IIN
VIN
+
_
+
CIN
0.1 µF
VIN
VOUT
VOUT
CL
2.2 µF
IOUT
+
GND
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25
°C,
unless otherwise specified.
LOAD REGULATION
5
VOUT (25 mV/ DIV)
SHORT CIRCUIT PROTECTION
OUTPUT VOLTAGE
VS
.
INPUT VOLTAGE
VOUT TYPICAL
IOUT = 0 mA
IOUT = 30 mA
IOUT = 60 mA
VOUT (5 mV/ DIV)
VOUT TYPICAL
4
VOUT (V)
3
2
1
0
IOUT = 90 mA
0
50
IOUT (mA)
100
0
100
IOUT (mA)
200
0
VIN = VOUT
VIN (V) (50 mV/DIV)
QUIESCENT CURRENT
VS.
INPUT VOLTAGE
LINE REGULATION
VOUT TYPICAL
VOUT (50 mV/ DIV)
REVERSE BIAS CURRENT RANGE
(VIN = 0 V)
100
80
IREV (µA)
60
40
20
0
0
5
VREV (V)
VOUT = 8.0 V
10
0
0
IQ (mA)
VOUT = 2.0 V
2
IOUT = 0 mA
1
VOUT = 3 V
0
10
VIN (V)
20
5
VIN (V)
10
January 1999 TOKO, Inc.
Page 5
