TK712xx
LOW DROPOUT REGULATOR
FEATURES
s
Low Dropout Voltage
s
Low Quiescent Current
s
Very Stable Output
s
Low Noise (35
µ
Vrms)
s
Miniature Package (SOT-25)
APPLICATIONS
s
Battery Powered Systems
s
Portable Consumer Equipment
s
Cordless Telephones
s
Personal Communications Equipment
s
Radio Control Systems
s
Toys
s
Low Voltage Systems
DESCRIPTION
TK712xx is a low dropout, linear regulator. Since a PNP
power transistor is used, dropout voltage is very low,
making it possible to maintain stable output voltage even
as the battery decreases. This allows longer battery life.
The TK712xx has a noise bypass pin available for noise
reduction.
The TK712xx is available in a miniature SOT-25 surface
mount package.
20P
TK712xx
NOISE
BYPASS
GND
VIN
GND
VOUT
ORDERING INFORMATION
TK712
VoltageCode
M
Tape/Reel Code
VIN
BLOCK DIAGRAM
VOUT
VOLTAGE CODE
20 = 2.0 V
25 = 2.5 V
28 = 2.8 V
30 = 3.0 V
33 = 3.3 V
35 = 3.5 V
40 = 4.0 V
45 = 4.5 V
50 = 5.0 V
TAPE/REEL CODE
TL: Tape Left
NOISE
BYPASS
THERMAL
PROTECTION
BANDGAP
REFERENCE
GND
GND
January 1999 TOKO, Inc.
Page 1
TK712xx
ABSOLUTE MAXIMUM RATINGS
Input Voltage ............................................................ 15 V
Power Dissipation (Note 1) ................................ 350 mW
Operating Voltage Range ............................... 1.4 to 14 V
Junction Temperature ........................................... 150
°C
Storage Temperature Range ................... -55 to +150
°C
Operating Temperature Range ................... -30 to +80
°C
Lead Soldering Temperature (10 s) ...................... 235
°C
TK71220 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 3 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
L oad Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
TEST CONDITIONS
V
IN
= 3.0 V, I
OUT
= 0 mA
V
IN
= 1.8 V, I
OUT
= 0 mA
V
IN
= 3.0 V, I
OUT
= 10 mA
I
OUT
= 30 mA
MIN
TYP
130
1.4
MAX
300
3.0
2.1
200
UNITS
µA
mA
V
mV
mA
1.9
2.0
100
100
V
IN
= 3.0 V, I
OUT
= 30 mA
V
IN
= 3.0 to 13.0 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
160
1.5
10
20
63
1.27
0.15
3.5
30
40
mA
mV
mV
dB
V
mV/° C
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25
°C.
Page 2
January 1999 TOKO, Inc.
TK712xx
TK71225 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 3.5 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
TEST CONDITIONS
V
IN
= 3.5 V, I
OUT
= 0 mA
V
IN
= 2.0 V, I
OUT
= 0 mA
V
IN
= 3.5 V, I
OUT
= 10 mA
I
OUT
= 30 mA
MIN
TYP
130
1.4
MAX
300
3.0
2.6
200
UNITS
µA
mA
V
mV
mA
2.4
2.5
100
100
V
IN
= 3.5 V, I
OUT
= 30 mA
V
IN
= 3.5 to 13.5 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
160
1.5
10
20
63
1.27
0.15
3.5
30
40
mA
mV
mV
dB
V
mV/° C
TK71228 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 3.8 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass terminal
Voltage
Temperature Coefficient
TEST CONDITIONS
V
IN
= 3.8 V, I
OUT
= 0 mA
V
IN
= 2.5 V, I
OUT
= 0 mA
V
IN
= 3.8 V, I
OUT
= 10 mA
I
OUT
= 30 mA
MIN
TYP
13 0
1.4
MAX
300
3.0
2.9
200
UNITS
µA
mA
V
mV
mA
2.7
2.8
100
100
V
IN
= 3.8 V, I
OUT
= 30 mA
V
IN
= 3.8 to 13.8 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
160
1.5
10
20
63
1.27
0.18
3.5
30
40
mA
mV
mV
dB
V
mV/° C
January 1999 TOKO, Inc.
Page 3
TK712xx
TK71230 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 4.0 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
V
IN
= 4.0 V, I
OUT
= 30 mA
V
IN
= 4.0 to 14.0 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
TEST CONDITIONS
V
IN
= 4.0 V, I
OUT
= 0 mA
V
IN
= 2.5 V, I
OUT
= 0 mA
V
IN
= 4.0 V, I
OUT
= 10 mA
I
OUT
= 30 mA
100
2.9
MIN
TYP
130
1.4
3.0
100
160
1.5
10
20
63
1.27
0.18
3.5
30
40
MAX
300
3.0
3.1
200
UNITS
µA
mA
V
mV
mA
mA
mV
mV
dB
V
mV/° C
TK71233 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 3.9 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
V
IN
= 3.9 V, I
OUT
= 30 mA
V
IN
= 3.9 to 14.0 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
TEST CONDITIONS
V
IN
= 3.9 V, I
OUT
= 0 mA
V
IN
= 2.8 V, I
OUT
= 0 mA
V
IN
= 3.9 V, I
OUT
= 10 mA
I
OUT
= 30 mA
100
3.2
MIN
TYP
130
1.4
3.3
100
160
1.5
10
20
63
1.27
0.18
3.5
30
40
MAX
300
3.0
3.4
200
UNITS
µA
mA
V
mV
mA
mA
mV
mV
dB
V
mV/° C
Page 4
January 1999 TOKO, Inc.
TK712xx
TK71235 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 4.1 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
TEST CONDITIONS
V
IN
= 4.1 V, I
OUT
= 0 mA
V
IN
= 3.0 V, I
OUT
= 0 mA
V
IN
= 4.1 V, I
OUT
= 10 mA
I
OUT
= 30 mA
MI N
TYP
130
1.4
MAX
300
3.0
3.61
200
UNITS
µA
mA
V
mV
mA
3.39
3.50
100
100
V
IN
= 4.1 V, I
OUT
= 30 mA
V
IN
= 4.1 to 14.0 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
160
1.5
10
20
63
1.27
0.2
3.5
30
40
mA
mV
mV
dB
V
mV/° C
TK71240 ELECTRICAL CHARACTERISTICS
Test Conditions: V
IN
= 4.6 V, T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
V
OUT
V
DROP
I
OUT
I
GND
Line Reg
Load Reg
RR
V
ref
∆V
OUT
/∆T
PARAMETER
Quiescent Current
Regulated Output Voltage
Dropout Voltage
Output Current
Ground Current
Line Regulation
Load Regulation
Ripple Rejection
Noise Bypass Terminal
Voltage
Temperature Coefficient
V
IN
= 4.6 V, I
OUT
= 30 mA
V
IN
= 4.6 to 14.0 V
I
OUT
= 1 to 60 mA
C
L
= 3.3 µF, f = 400 Hz, I
OUT
= 10 mA
TEST CONDITIONS
V
IN
= 4.6 V, I
OUT
= 0 mA
V
IN
= 3.5 V, I
OUT
= 0 mA
V
IN
= 4.6 V, I
OUT
= 10 mA
I
OUT
= 30 mA
100
3.88
MIN
TYP
130
1.4
4.00
100
160
1.5
10
20
63
1.27
0. 2
3.5
30
40
MAX
300
3.0
4.12
200
UNITS
µA
mA
V
mV
mA
mA
mV
mV
dB
V
mV/° C
January 1999 TOKO, Inc.
Page 5
京公网安备 11010802033920号
EEWORLD
