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 4.7V, 5V, 6V, 8V, 9V, 12V, 15V,18V and 24V
available
* Thermal overload shutdown protection
* Short circuit current limiting
* Output transistor SOA protection
*Pb-free plating product number:78TXXL
ORDERING INFORMATION
Ordering Number
Pin Assignment
Normal
Lead Free Plating
1
2
3
78Txx-TQ2-R
78TxxL-TQ2-R
I
G
O
78Txx-TQ2-T
78TxxL-TQ2-T
I
G
O
78Txx-TQ3-R
78TxxL-TQ3-R
I
G
O
78Txx-TQ3-T
78TxxL-TQ3-T
I
G
O
Note: 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
Packing
Tape Reel
Tube
Tape Reel
Tube
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1 of 7
QW-R101-021,B
78TXX
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
47 : 4.7V
05 : 5V
06 : 6V
08 : 8V
09 : 9V
12 : 12V
15 : 15V
18 : 18V
24 : 24V
LINEAR INTEGRATED CIRCUIT
MARKING
TO-263
TO-263-3
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QW-R101-021,B
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
T13
OUTPUT
3
R8
R15
T4
Z1
T15
R5
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,B
78TXX
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified. )
RATINGS
UNIT
V
OUT
=4.7~18V
35
V
Input Voltage
V
IN
V
OUT
=20~24V
40
V
Output Current
I
OUT
0.5
A
Power Dissipation
P
D
Internally Limited
W
Operating Junction Temperature
T
J
0~+125
°C
Storage Temperature
T
STG
-65 ~ +150
°C
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.
SYMBOL
ELECTRICAL CHARACTERISTICS
(T
J
=25°C,C
I
=0.33uF,C
O
=0.1uF,P
D
≦7W,unless
otherwise specified)
For 78T47
(V
IN
=9.7V, 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
=7.2~19.7V, I
OUT
=5mA~0.5A
I
OUT
=5mA~0.5A
ΔV
OUT
I
OUT
=5mA~200mA
V
IN
=7.2~19.7V
ΔV
OUT
V
IN
=7.2~19.7V, I
OUT
=0.5A
I
Q
I
OUT
=0.5A
V
IN
=7.2~19.7V
ΔI
Q
I
OUT
=5mA~0.5A
10Hz≦f≦100kHz
eN
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=7.7~17.7V, f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
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
eN
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=8~18V,f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
SYMBOL
SYMBOL
MIN
4.512
4.465
TYP
4.7
MAX UNIT
4.888
V
4.935
V
47
mV
24
mV
47
mV
47
mV
8
mA
1
mA
0.5
mA
μV
mV/°C
dB
A
mA
V
MAX
5.2
5.25
100
50
100
50
8
1
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
mV/°C
dB
A
mA
V
62
40
-0.6
80
1.8
250
2
TYP
5
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
MIN
4.8
4.75
62
40
-0.6
80
1.2
250
2
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QW-R101-021,B
78TXX
ELECTRICAL CHARACTERISTICS(Cont.)
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
SYMBOL
LINEAR INTEGRATED CIRCUIT
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
eN
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=9~19V,f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
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
eN
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
eN
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=12.5~22.5V,f=120Hz
I
PEAK
I
SC
V
IN
=35V
V
D
SYMBOL
SYMBOL
MIN
5.76
5.7
TYP
6
MAX
6.24
6.3
60
30
60
60
8
1
0.5
59
45
-0.7
75
1.2
250
2
TYP
8
MAX
8.32
8.4
80
40
80
80
8
1
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
mV/°C
dB
A
mA
V
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
mV/°C
dB
A
mA
V
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
mV/°C
dB
A
mA
V
5 of 7
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
MIN
7.68
7.6
56
58
-0.9
72
1.2
250
2
TYP
9
MAX
9.36
9.45
90
45
90
90
8
1
0.5
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
MIN
8.64
8.55
56
58
-1.1
72
1.2
250
2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
QW-R101-021,B
