LM7912CT/NOPB National Semiconductor, LM7912CT/NOPB Datasheet - Page 2
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LM7912CT/NOPB
Manufacturer Part Number
LM7912CT/NOPB
Description
IC VOLT REG NEG 12V 1.5A TO220-3
Manufacturer
National Semiconductor
Type
Voltage Regulatorr
Specifications of LM7912CT/NOPB
Regulator Topology
Negative Fixed
Voltage - Output
-12V
Voltage - Input
-19 ~ -35 V
Voltage - Dropout (typical)
1.1V @ 1A
Number Of Regulators
1
Current - Output
1.5A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Current, Output
1.5 A
Current, Supply
1.5 mA
Package Type
TO-220
Regulation, Line
5 mV
Regulation, Load
15 mV
Regulator Type
Negative Voltage Out
Resistance, Thermal, Junction To Case
3 °C/W
Temperature, Operating, Range
0 to +125 °C
Voltage, Dropout
1.1 V
Voltage, Input
-35 V
Voltage, Noise
300 μV
Voltage, Output
-12 V
Voltage, Supply, Rejection Ratio
70 dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Other names
*LM7912CT
*LM7912CT/NOPB
LM7912
LM7912CT
UA7912
UA7912CT
UA7912CU
*LM7912CT/NOPB
LM7912
LM7912CT
UA7912
UA7912CT
UA7912CU
www.national.com
V
V
I
V
I
Symbol
Symbol
Q
OMAX
V
V
Conditions unless otherwise noted: I
O
Conditions unless otherwise noted: I
O
V
V
I
n
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
Electrical Characteristics
Electrical Characteristics
Q
O
O
O
O
(V
(V
o
o
= −5V)
= −12V and −15V)
Output Voltage
Line Regulation
Load Regulation
Input Voltage (unless otherwise specified)
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Peak Output Current
Average Temperature
Coefficient of
Output Voltage
Input Voltage (unless otherwise specified)
Parameter
Parameter
Output Voltage
Part Number
Output Voltage
Part Number
OUT
OUT
T
5mA
P
T
T
J
J
J
T
5mA
P
T
T
5mA
250mA
T
With Line
With Load, 5mA
T
f = 120Hz
T
T
I
0 C
OUT
= 500mA, C
J
J
J
J
A
J
J
= 25˚C
= 25˚C, (Note 3)
= 25˚C, (Note 3)
= 500mA, C
15W
= 25˚C
= 25˚C, (Note 3)
= 25˚C, (Note 3)
= 25˚C
= 25˚C, I
= 25˚C
= 25˚C, 10Hz
15W
= 5mA,
I
T
OUT
I
I
J
OUT
OUT
(Note 1)
Conditions
I
OUT
Conditions
100˚C
OUT
1A,
IN
IN
1A,
1.5A
= 2.2µF, C
= 2.2µF, C
= 1A
750mA
−25V
−35V
I
OUT
f
100Hz
2
1A
OUT
OUT
Input-Output Differential
Power Dissipation (Note 2)
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
(V
(V
= 1µF, 0˚C
−11.5 −12.0 −12.5
−11.4
= 1µF, 0˚C
o
o
(−27
(−30
Min
(−22
= −5V)
= −12V and −15V)
LM7912C
−12V
−19V
V
V
−4.75
Typ
−4.8
V
Min
IN
IN
54
5
3
IN
T
T
−14.5)
−14.5)
J
J
−16)
−12.6
Max
80
30
(−20
(−25
(−12
(−25
(−18
+125˚C, Power Dissipation
+125˚C, Power Dissipation
LM7905C
−10V
−14.25
−5.0
−5V
Typ
125
1.1
2.2
0.4
−14.4
15
66
V
V
V
V
V
8
2
5
1
Min
(−30
(−30
IN
IN
IN
IN
IN
(−26
LM7915C
−7)
−7)
−8)
−7)
−8)
−15.0
−15V
−23V
V
V
Typ
V
IN
5
IN
3
IN
−5.25
Max
−5.2
100
−17.5)
0.5
0.5
−17.5)
50
15
50
−20)
2
−15.75
Internally Limited
−65˚C to +150˚C
−15.6
Max
100
50
0˚C to +125˚C
1.5W.
1.5W.
mV/˚C
Units
Units
mV
mV
mV
mV
mA
mA
mA
230˚C
µV
dB
mV
mV
V
V
V
V
V
V
V
V
A
V
V
V
V
V
25V
30V