LM7912CT National Semiconductor, LM7912CT Datasheet - Page 2
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LM7912CT
Manufacturer Part Number
LM7912CT
Description
IC NEGATIVE VOLT REGULATOR -12V TO-220-3
Manufacturer
National Semiconductor
Datasheet
1.LM7915CTNOPB.pdf
(9 pages)
Specifications of LM7912CT
Primary Input Voltage
-27V
Output Voltage Fixed
-12V
Dropout Voltage Vdo
1.1V
No. Of Outputs
1
No. Of Pins
3
Output Current
1.5A
Operating Temperature Range
0°C To +125°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM7912CT
Manufacturer:
FSC
Quantity:
2 000
Part Number:
LM7912CT
Manufacturer:
NS/国半
Quantity:
20 000
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