UNISONIC TECHNOLOGIES CO.,
79TXXA
3 TERMINAL 1A NEGATIVE
VOLTAGE REGULATOR
1
TO-263
LINEAR INTEGRATED CIRCUIT
DESCRIPTION
The UTC
79TXXA
series of three-terminal negative
regulators are available in TO-263 package and with several
fixed output voltage, making them useful in a wide range of
application. Each type employs internal current limiting,
thermal shut-down and safe area protection, making it
essentially indestructible.
1
TO-263-3
FEATURES
*Output current up to 1A
*-5V, -6V, -8V, -9V, -12V, -15V, -18V, -24V output voltage
available
*Thermal overload protection
*Short circuit protection
ORDERING INFORMATION
Ordering Number
Lead Free
79TXXAL-TQ2-R
79TXXAL-TQ2-T
79TXXAL-TQ3-R
79TXXAL-TQ3-T
Note: Pin Code: I: Input
Halogen Free
79TXXAG-TQ2-R
79TXXAG-TQ2-T
79TXXAG-TQ3-R
79TXXAG-TQ3-T
O: Output
Package
TO-263
TO-263
TO-263-3
TO-263-3
Pin Assignment
1
2
3
G
I
O
G
I
O
G
I
O
G
I
O
Packing
Tape Reel
Tube
Tape Reel
Tube
G: GND
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QW-R101-013.Da
79TXXA
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
TO-263
TO-263-3
05 :5.0V
06 :6.0V
08 :8.0V
09 :9.0V
12 :12V
15 :15V
18 :18V
24 :24V
BLOCK DIAGRAM
GND
R1
R2
Voltage
reference
OUTPUT
Protection
circuitry
RSC
INPUT
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79TXXA
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
=25℃, unless otherwise specified)
SYMBOL
RATING
UNIT
Input voltage
V
IN
-35
V
Output Current
I
OUT
1
A
Power Dissipation
P
D
Internally Limited
W
Operating Temperature
T
OPR
0 ~ +125
℃
Storage Temperature
T
STG
-65 ~ +150
℃
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θ
JA
θ
JC
RATINGS
65
5
UNIT
℃/W
℃/W
ELECTRICAL CHARACTERISTICS
(Refer to test circuits, T
J
= 0°С-125℃, I
OUT
=500mA, C
O
=1uF, unless otherwise specified)
FOR 79T05A
(V
IN
=-10V, C
I
=33uF)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
T
J
=25℃
-4.80
Output Voltage
V
OUT
I
OUT
=5mA ~ 1A, P
D
≦
15W, V
IN
= -7V ~ -20V -4.75
T
J
=25℃, V
IN
=-7V ~ -25V
Line Regulation
ΔV
OUT
T
J
=25℃, V
IN
=-8V ~ -12V
T
J
=25℃, I
OUT
=5mA ~ 1A
Load Regulation
ΔV
OUT
T
J
=25℃, I
OUT
=250mA ~ 750mA
Quiescent Current
I
Q
T
J
=25℃
I
OUT
=5mA ~ 1A
Quiescent Current Change
ΔI
Q
V
IN
=-7V ~ -25V
Temperature coefficient of V
O
ΔV
O
/ΔT I
OUT
=5mA
Output Noise Voltage
eN
f=10Hz ~ 100kHz, T
A
=25℃
Ripple Rejection
RR
f=120Hz, V
IN
=-8V ~ -18V
54
Dropout Voltage
V
D
I
OUT
=1.0A, T
J
=25℃
Short-Circuit Current
I
SC
V
IN
=-35V, T
A
=25℃
Peak Output Current
I
PEAK
T
J
=25℃
FOR 79T06A
(V
IN
=-11V, C
I
=2.2uF)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
T
J
=25℃
-5.76
Output Voltage
V
OUT
I
OUT
=5mA ~ 1A, P
D
≦
15W, V
IN
=-8V~ -21V -5.70
T
J
=25℃, V
IN
=-8V ~ -25V
Line Regulation
ΔV
OUT
T
J
=25℃, V
IN
=-9V ~ -13V
T
J
=25℃, I
OUT
=5mA ~ 1A
Load Regulation
ΔV
OUT
T
J
=25℃, I
OUT
=250mA ~ 750mA
Quiescent Current
I
Q
T
J
=25℃
I
OUT
=5mA ~ 1A
Quiescent Current Change
ΔI
Q
V
IN
=-8V ~ -25V
Temperature coefficient of V
O
ΔV
O
/ΔT I
OUT
=5mA
f=10Hz ~ 100kHz, T
A
=25℃
Output Noise Voltage
eN
Ripple Rejection
Dropout Voltage
Short-Circuit Current
Peak Output Current
RR
V
D
I
SC
I
PEAK
f=120Hz, V
IN
=-9V ~ -19V
I
OUT
=1.0A, T
J
=25℃
V
IN
=-35V, T
A
=25℃
T
J
=25℃
54
TYP
-5.0
10
10
3
3
0.05
0.1
-0.4
100
60
2
300
2.2
TYP
-6.00
10
5
10
3
3
MAX UNIT
-5.20
V
-5.25
V
100
mV
mV
100
mV
50
mV
6
mA
0.5
mA
1.3
mA
mV/℃
μV
dB
V
mA
A
MAX UNIT
-6.24
V
-6.30
V
120
mV
60
mV
120
mV
60
mV
6
mA
0.5
mA
1.3
mA
mV/℃
μV
dB
V
mA
A
-0.5
130
60
2
300
2.2
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79TXXA
ELECTRICAL CHARACTERISTICS(Cont.)
FOR 79T08A
(V
IN
=-14V, C
I
=2.2uF)
PARAMETER
SYMBOL
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
V
OUT
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
T
J
=25℃
I
OUT
=5mA~1A, P
D
≦
15W, V
IN
=-10.5V~-23V
T
J
=25℃, V
IN
=-10.5V ~ -25V
T
J
=25℃, V
IN
=-11.5V ~ -17V
T
J
=25℃, I
OUT
=5mA ~ 1A
T
J
=25℃, I
OUT
=250mA ~ 750mA
T
J
=25℃
I
OUT
=5mA ~ 1A
V
IN
=-11.5V ~ -25V
I
OUT
=5mA
f=10Hz ~ 100kHz,T
A
=25℃
f=120Hz, V
IN
=-11.5V ~ -21.5V
I
OUT
=1.0A,T
J
=25℃
V
IN
=-35V,T
A
=25℃
T
J
=25℃
TEST CONDITIONS
MIN
-7.68
-7.60
TYP
-8.0
10
5
12
4
3
0.05
0.1
-0.6
175
60
2
300
2.2
TYP
-9.0
10
5
12
4
3
0.05
0.1
-0.6
175
60
2.0
300
2.2
Temperature coefficient of V
O
ΔV
O
/ΔT
Output Noise Voltage
eN
Ripple Rejection
RR
Dropout Voltage
V
D
Short-Circuit Current
I
SC
Peak Output Current
I
PEAK
FOR 79T09A
(V
IN
=-15V, C
I
=2.2uF)
PARAMETER
SYMBOL
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Temperature coefficient of V
O
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short-Circuit Current
Peak Output Current
V
OUT
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
ΔV
O
/ΔT
eN
RR
V
D
I
SC
I
PEAK
54
MAX UNIT
-8.32
V
-8.40
V
100
mV
80
mV
160
mV
80
mV
6
mA
0.5
mA
1.0
mA
mV/℃
μV
dB
V
mA
A
MAX UNIT
-9.36
V
-9.45
V
180
mV
90
mV
180
mV
90
mV
6
mA
0.5
mA
1.0
mA
mV/℃
μV
dB
V
mA
A
MIN
-8.64
T
J
=25℃
I
OUT
=5mA~1A, P
D
≦
15W, V
IN
=-11.5V~-23V -8.55
T
J
=25℃, V
IN
=-11.5V ~ -26 V
T
J
=25℃, V
IN
=-12V ~ -18V
T
J
=25℃, I
OUT
=5mA ~ 1A
T
J
=25℃, I
OUT
=0.25A - 0.75A
T
J
=25℃
I
OUT
=5mA ~ 1A
V
IN
=-11.5V ~ -26V
I
OUT
=5mA
f=10Hz ~ 100kHz, T
A
=25℃
f=120Hz,T
J
=25℃, V
IN
=-12.5V ~ -22.5V
54
I
OUT
=1.0A, T
J
=25℃
V
IN
=-35V, T
A
=25℃
T
J
=25℃
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QW-R101-013.Da
79TXXA
ELECTRICAL CHARACTERISTICS(Cont.)
FOR 79T12A
(V
IN
=-18V, C
I
=2.2uF)
PARAMETER
SYMBOL
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
V
OUT
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
LINEAR INTEGRATED CIRCUIT
Temperature coefficient of V
O
ΔV
O
/ΔT
eN
Output Noise Voltage
Ripple Rejection
RR
Dropout Voltage
V
D
Short-Circuit Current
I
SC
Peak Output Current
I
PEAK
FOR 79T15A
(V
IN
=-23V, C
I
=2.2uF)
PARAMETER
SYMBOL
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Temperature coefficient of V
O
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short-Circuit Current
Peak Output Current
V
OUT
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
ΔV
O
/ΔT
eN
RR
V
D
I
SC
I
PEAK
MIN TYP MAX UNIT
T
J
=25℃
-11.52 -12.0 -12.48 V
I
OUT
=5mA~1A, P
D
≦
15W, V
IN
=-14.5V~-27V -11.40
-12.60 V
T
J
=25℃, V
IN
=-14.5V ~ -30V
12
240
mV
T
J
=25℃, V
IN
=-16V ~ -22V
6
120
mV
T
J
=25℃, I
OUT
=5mA ~ 1A
12
240
mV
T
J
=25℃, I
OUT
=250mA ~ 750mA
4
120
mV
T
J
=25℃
3
6
mA
0.05
0.5
mA
I
OUT
=5mA ~ 1A
V
IN
=-14.5V ~ -30V
0.1
1.0
mA
mV/℃
I
OUT
=5mA
-0.8
f=10 Hz ~ 100kHz, T
A
=25℃
200
μV
f=120Hz, V
IN
=-15V ~ -25V
54
60
dB
I
OUT
=1.0A, T
J
=25℃
2
V
V
IN
=-35V, T
A
=25℃
300
mA
T
J
=25℃
2.2
A
MIN TYP MAX UNIT
T
J
=25℃
-14.40 -15.0 -15.60 V
I
OUT
=5mA~1A, P
D
≦
15W, V
IN
=-17.5V~ -30V -14.25
-15.75 V
T
J
=25℃, V
IN
=-17.5V to -30V
12
300
mV
T
J
=25℃, V
IN
=-20V to -26V
6
150
mV
T
J
=25℃, I
OUT
=5mA ~ 1A
12
300
mV
T
J
=25℃, I
OUT
=250mA ~ 750mA
4
150
mV
T
J
=25℃
3
6
mA
I
OUT
=5mA ~ 1A
0.05
0.5
mA
V
IN
=-17.5V to -30.5V
0.1
1.0
mA
mV/℃
I
OUT
=5mA
-0.9
f=10 Hz ~ 100kHz,T
A
=25℃
250
μV
f=120Hz, V
IN
=-18.5V to -28.5V
54
60
dB
I
OUT
=1.0A, T
J
=25℃
2
V
V
IN
=-35V, T
A
=25℃
300
mA
T
J
=25℃
2.2
A
TEST CONDITIONS
TEST CONDITIONS
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www.unisonic.com.tw
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QW-R101-013.Da
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