UNISONIC TECHNOLOGIES CO., LTD
78DXXA
3-TERMINALS 1A POSITIVE
VOLTAGE REGULATOR
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
1
TO-252
The UTC
78DXXA
family is monolithic fixed voltage regulator
integrated circuit. They are suitable for applications that required
supply current up to 1 A.
1
TO-252-3
FEATURES
1
SOT-223
* Peak output current up to 1A.
* Fixed output voltage of 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V,
20V and 24V available.
* Thermal overload shutdown protection.
* Short circuit current limiting.
* Output transistor SOA protection.
1
TO-251
ORDERING INFORMATION
Ordering Number
Halogen Free
78DXXAG-AA3-R
78DXXAG-TM3-T
78DXXAG-TN3-R
78DXXAG-TNA-R
G: GND
O: Output
Package
SOT-223
TO-251
TO-252
TO-252-3
Pin Assignment
1
2
3
I
G
O
I
G
O
I
G
O
I
G
O
Packing
Tape Reel
Tube
Tape Reel
Tape Reel
Lead Free
-
78DXXAL-TM3-T
78DXXAL-TN3-R
78DXXAL-TNA-R
Note: Pin Code: I: Input
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Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 10
QW-R101-010.S
78DXXA
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
05: 5V
06: 6V
07: 7V
08: 8V
09: 9V
10: 10V
12: 12V
15: 15V
18: 18V
20: 20V
24: 24V
LINEAR INTEGRATED CIRCUIT
MARKING
SOT-223
TO-251
TO-252
TO-252-3
Voltage Code
Lot Code
UTC
78DXXA
L: Lead Free
G: Halogen Free
Date Code
3
1
2
UNISONIC TECHNOLOGIES CO., LTD
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2 of 10
QW-R101-010.S
78DXXA
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
INPUT
1
R13
T10
R17
T8
R9
T9
Z2
T12
R19
R18
R11
T14
R14
T11
T13
T5
T6
R12
R10
OUTPUT
3
R8
R5
R15
Z1
T15
T4
R4
R6
T7
T3
T1
T2
R16
R1
R2
C1
R7
R3
GND
2
APPLICATION CIRCUIT
Note: Bypass capacitors are recommended for optimum stability and transient response and should be located
as close as possible to the regulators.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 10
QW-R101-010.S
78DXXA
PARAMETER
Input Voltage
Output Current
Power Dissipation (T
C
=25°C)
SOT-223
TO-251/TO-252
TO-252-3
SYMBOL
V
IN
I
OUT
P
D
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C, unless otherwise specified)
RATINGS
35
1
8.3
10
UNIT
V
A
W
Junction Temperature
T
J
+150
°C
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-55 ~ +150
°C
Notes: 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.
THERMAL DATA
PARAMETER
SYMBOL
SOT-223
TO-251/TO-252
TO-252-3
SOT-223
TO-251/TO-252
TO-252-3
θ
JA
RATINGS
150
112
15
θ
JC
12.5
°C/W
UNIT
°C/W
Junction to Ambient
Junction to Case
ELECTRICAL CHARACTERISTICS
(T
J
=25C, C
I
=0.33uF, C
O
=0.1uF, P
D
≤15W,
unless otherwise specified)
For 78D05A
(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
SYMBOL
V
OUT
V
OUT
V
OUT
I
Q
I
Q
eN
V
OUT
/T
RR
I
PEAK
I
SC
V
D
TEST CONDITIONS
I
OUT
=5mA~1.0A
V
IN
=7.5~20V, I
OUT
=5mA~1.0A
I
OUT
=5mA~1.0A
I
OUT
=0.25A~0.75A
V
IN
=7~25V
V
IN
=7.5~20V, I
OUT
=1.0A
I
OUT
≤1.0A
V
IN
=7.5~20V
I
OUT
=5mA~1.0A
10Hz≤f≤100kHz
I
OUT
=5mA
V
IN
=8~18V,f=120Hz
V
IN
=35V
MIN
4.80
4.75
TYP
5.0
MAX
5.20
5.25
50
25
50
50
8.0
1.0
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
V
mV/C
dB
A
mA
V
62
40
-0.6
80
1.8
250
2.0
UNISONIC TECHNOLOGIES CO., LTD
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QW-R101-010.S
78DXXA
ELECTRICAL CHARACTERISTICS(Cont.)
SYMBOL
V
OUT
V
OUT
V
OUT
I
Q
I
Q
eN
V
OUT
/T
RR
I
PEAK
I
SC
V
D
SYMBOL
V
OUT
V
OUT
V
OUT
I
Q
I
Q
eN
V
OUT
/T
RR
I
PEAK
I
SC
V
D
SYMBOL
V
OUT
V
OUT
V
OUT
I
Q
I
Q
eN
V
OUT
/T
RR
I
PEAK
I
SC
V
D
For 78D06A
(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
For 78D07A
(V
IN
=13V, 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 78D08A
(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
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
I
OUT
=5mA~1.0A
V
IN
=8.5~21V, I
OUT
=5mA~1.0A
I
OUT
=5mA~1.0A
I
OUT
=0.25A~0.75A
V
IN
=8~25V
V
IN
=8.5~21V, I
OUT
=1.0A
I
OUT
≤1.0A
V
IN
=8.5~21V
I
OUT
=5mA~1.0A
10Hz≤f≤100kHz
I
OUT
=5mA
V
IN
=9~19V,f=120Hz
V
IN
=35V
MIN
5.76
5.7
TYP
6.0
MAX
6.24
6.3
60
30
60
60
8.0
1.0
0.5
59
45
-0.7
75
1.8
250
2.0
TYP
7.0
MAX
7.28
7.35
70
35
70
70
8.0
1.0
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
V
mV/C
dB
A
mA
V
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
V
mV/C
dB
A
mA
V
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
V
mV/C
dB
A
mA
V
TEST CONDITIONS
I
OUT
=5mA~1.0A
V
IN
=9.5~22V, I
OUT
=5mA~1.0A
I
OUT
=5mA~1.0A
I
OUT
=0.25A~0.75A
V
IN
=9~25V
V
IN
=9.5~22V, I
OUT
=1.0A
I
OUT
≤1.0A
V
IN
=9.5~22V
I
OUT
=5mA~1.0A
10Hz≤f≤100kHz
I
OUT
=5mA
V
IN
=10~20V,f=120Hz
V
IN
=35V
MIN
6.72
6.65
59
50
-0.8
75
1.7
250
2.0
TYP
8.0
MAX
8.32
8.4
80
40
80
80
8.0
1.0
0.5
TEST CONDITIONS
I
OUT
=5mA~1.0A
V
IN
=10.5~23V, I
OUT
=5mA~1.0A
I
OUT
=5mA~1.0A
I
OUT
=0.25A~0.75A
V
IN
=10.5~25V
V
IN
=10.5~23V, I
OUT
=1.0A
I
OUT
≤1.0A
V
IN
=10.5~23V
I
OUT
=5mA~1.0A
10Hz≤f≤100kHz
I
OUT
=5mA
V
IN
=11.5~21.5V,f=120Hz
V
IN
=35V
MIN
7.68
7.6
56
58
-0.9
72
1.8
250
2.0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 10
QW-R101-010.S
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