UNISONIC TECHNOLOGIES CO., LTD
78TXX
3-TERMINALS 0.5A POSITIVE
VOLTAGE REGULATOR
DESCRIPTION
The UTC
78TXX
family is monolithic fixed voltage regulator
integrated circuit. They are suitable for applications that required supply
current up to 0.5 A.
LINEAR INTEGRATED CIRCUIT
FEATURE
* Output current up to 0.5 A
* Fixed output voltage of 5V, 6V, 8V, 9V, 12V, 15V and 18V available
* Thermal overload shutdown protection
* Short circuit current limiting
* Output transistor SOA protection
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
78TXXL-TQ2-R
78TXXG-TQ2-R
78TXXL-TQ2-T
78TXXG-TQ2-T
78TXXL-TQ3-R
78TXXG-TQ3-R
78TXXL-TQ3-T
78TXXG-TQ3-T
1. xx: output voltage, refer to Marking Information
2. Pin Code: I: Input
G: GND O: Output
Package
TO-263
TO-263
TO-263-3
TO-263-3
Pin Assignment
1
2
3
I
G
O
I
G
O
I
G
O
I
G
O
Packing
Tape Reel
Tube
Tape Reel
Tube
Note:
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QW-R101-021,E
78TXX
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
05
06
08
09
12
15
18
:
:
:
:
:
:
:
5V
6V
8V
9V
12V
15V
18V
LINEAR INTEGRATED CIRCUIT
MARKING
TO-263
TO-263-3
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QW-R101-021,E
78TXX
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
INPUT
1
R13
T10
R17
T8
R9
T9
Z2
T12
T14
R19
R18
R12
R11
R10
R14
T11
T5
T6
R15
T4
Z1
T15
R5
T13
OUTPUT
3
R8
R4
R6
T7
R16
R1
R2
C1
T3
R7
T1
T2
R3
GND
2
TYPICAL APPLICATION CIRCUIT
V
IN
Vo
UT
1
UTC78TXX
2
3
C
I
0.33
μF
C
O
0.1
μF
Note: Bypass capacitors are recommended for optimum stability and transient response and should be located as
close as possible to the regulators.
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QW-R101-021,E
78TXX
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified.)
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
35
V
Output Current
I
OUT
0.5
A
Power Dissipation
P
D
Internally Limited
W
℃
Junction Temperature
T
J
0~+125
℃
Storage Temperature
T
STG
-65 ~ +150
Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device
could be damaged beyond Absolute maximum ratings.
2. The maximum steady state usable output current are dependent on input voltage, heat sinking, lead length
of the package and copper pattern of PCB. The data are showed as electrical characteristics table
represents pulse test conditions with junction temperatures specified at the initiation of test.
ELECTRICAL CHARACTERISTICS
(T
J
=25℃,C
I
=0.33uF,C
O
=0.1uF,P
D
≦7W,
unless otherwise specified)
For 78T05
(V
IN
=10V, I
OUT
=0.5A)
PARAMETER
Output Voltage
Load Regulation
Line Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Temperature coefficient of V
OUT
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
For 78T06
(V
IN
=11V, I
OUT
=0.5A)
PARAMETER
Output Voltage
Load Regulation
Line Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Temperature coefficient of V
OUT
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
TEST CONDITIONS
I
OUT
=5mA~0.5A
V
OUT
V
IN
=7.5~20V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200 mA
V
IN
=7V~25V
ΔV
OUT
V
IN
=7.5~20V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
UT
=7.5~20V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
e
N
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=8~18V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
TEST CONDITIONS
I
OUT
=5mA~0.5A
V
OUT
V
IN
=8.5~21V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200mA
V
IN
=8~25V
ΔV
OUT
V
IN
=8.5~21V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
IN
=8.5~21V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
e
N
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=9~19V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
SYMBOL
SYMBOL
MIN
4.8
4.75
TYP
5
MAX
5.2
5.25
100
50
100
50
8
1
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/℃
dB
A
mA
V
MAX
6.24
6.3
60
30
60
60
8
1
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/℃
dB
A
mA
V
62
40
-0.6
80
1.2
250
2
TYP
6
MIN
5.76
5.7
59
45
-0.7
75
1.2
250
2
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QW-R101-021,E
78TXX
ELECTRICAL CHARACTERISTICS(Cont.)
For 78T08
(V
IN
=14V, I
OUT
=0.5A)
PARAMETER
Output Voltage
Load Regulation
Line Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Temperature coefficient of V
OUT
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
For 78T09
(V
IN
=15V, I
OUT
=0.5A)
PARAMETER
Output Voltage
Load Regulation
Line Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Temperature coefficient of V
OUT
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
For 78T12
(V
IN
=19V, I
OUT
=0.5A)
PARAMETER
Output Voltage
Load Regulation
Line Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Temperature coefficient of V
OUT
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
SYMBOL
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
I
OUT
=5mA~0.5A
V
OUT
V
IN
=10.5~23V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200mA
V
IN
=10.5~25V
ΔV
OUT
V
IN
=10.5~23V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
IN
=10.5~23V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
e
N
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=11.5~21.5V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
TEST CONDITIONS
I
OUT
=5mA~0.5A
V
OUT
V
IN
=11.5~24V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200mA
V
IN
=11.5~25V
ΔV
OUT
V
IN
=11.5~24V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
IN
=11.5~24V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
e
N
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=12.5~22.5V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
TEST CONDITIONS
I
OUT
=5mA~0.5A
V
OUT
V
IN
=14.5~27V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200mA
V
IN
=14.5~30V
ΔV
OUT
V
IN
=14.6~27V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
IN
=14.5~30V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
e
N
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=15~25V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
SYMBOL
SYMBOL
MIN
7.68
7.6
TYP
8
MAX
8.32
8.4
80
40
80
80
8
1
0.5
56
58
-0.9
72
1.2
250
2
TYP
9
MAX
9.36
9.45
90
45
90
90
8
1
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/℃
dB
A
mA
V
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/℃
dB
A
mA
V
MIN
8.64
8.55
56
58
-1.1
72
1.2
250
2
TYP
12
MAX
12.48
12.6
120
60
120
120
8
1
0.5
MIN
11.52
11.4
55
75
-1.5
72
1.2
250
2
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/℃
dB
A
mA
V
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QW-R101-021,E
