Document
UNISONIC TECHNOLOGIES CO., LTD
78DXXA
LINEAR INTEGRATED CIRCUIT
3-TERMINALS 1A POSITIVE VOLTAGE REGULATOR
1
TO-251
DESCRIPTION
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
FEATURES
* 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-252-3
1
SOT-223
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
78DXXAL-AA3-R
78DXXAG-AA3-R
78DXXAL-TM3-T
78DXXAG-TM3-T
78DXXAL-TN3-R
78DXXAG-TN3-R
78DXXAL-TNA-R
78DXXAG-TNA-R
Note: Pin Code: I: Input G: GND O: Output
Package
SOT-223 TO-251 TO-252 TO-252-3
Pin Assignment
1
2
3
I
GO
I
GO
I
GO
I
GO
Packing
Tape Reel Tube
Tape Reel Tape Reel
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78DXXA
MARKING INFORMATION
PACKAGE VOLTAGE CODE
SOT-223
TO-251 TO-252 TO-252-3
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
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www.unisonic.com.tw
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QW-R101-010.Z
78DXXA
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
R13 T10
R17 T8
R14
T11
T5
R9
Z2
T9
T13
T12 T14
R19 R18 R12
R11 R10
T6 R8
R15 Z1
R5 T4
T15
R4
R6
T7
R16
R1
R2
C1
R7
T3
T1
T2
INPUT
1
OUTPUT
3
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
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QW-R101-010.Z
78DXXA
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage Output Current
VOUT=5~20V VOUT=24V
VIN
IOUT
35
V
40
V
1
A
SOT-223
8.3
Power Dissipation (TC=25°C) TO-251/TO-252
PD
TO-252-3
10
W
Junction Temperature Operating Temperature
TJ TOPR
+150
°C
-40 ~ +125
°C
Storage Temperature
TSTG
-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
SOT-223
Junction to Ambient
TO-251/TO-252
TO-252-3
SOT-223
Junction to Case
TO-251/TO-252
TO-252-3
SYMBOL θJA
θJC
RATINGS 150 112 15 12.5
ELECTRICAL CHARACTERISTICS
(TJ=25C, CI =0.33uF, CO=0.1uF, PD≤15W, unless otherwise specified)
For 78D05A (VIN=10V, IOUT=1.0A) PARAMETER
Output Vol.