LM7912 Ver la hoja de datos (PDF) - National ->Texas Instruments
Número de pieza
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Fabricante
LM7912 Datasheet PDF : 10 Pages
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Electrical Characteristics (Continued) Conditions unless otherwise noted IOUT e 500 mA CIN e 2 2 mF
COUT e 1 mF 0 C s TJ s a125 C Power Dissipation e 1 5W
Part Number
LM7912C
LM7915C
Output Voltage
Input Voltage (unless otherwise specified)
b12V
b19V
b15V
b23V
Units
Symbol
Parameter
Conditions
Min Typ Max Min Typ Max
VO
Output Voltage
TJ e 25 C
5 mA s IOUT s 1A
P s 15W
b11 5 b12 0 b12 5 b14 4 b15 0 b15 6 V
b11 4
b12 6 b14 25
b15 75 V
(b27 s VIN s b14 5)
(b30 s VIN s b17 5)
V
DVO
Line Regulation
TJ e 25 C (Note 3)
5
80
5
100
mV
(b30 s VIN s b14 5)
(b30 s VINs b17 5)
V
3
30
3
50
mV
(b22 s VIN s b16)
(b26 s VIN sb20)
V
DVO
Load Regulation
TJ e 25 C (Note 3)
5 mA s IOUT s 1 5A
250 mA s IOUT s 750 mA
15 200
5
75
15
200
mV
5
75
mV
IQ
Quiescent Current
TJ e 25 C
15
3
15
3
mA
DIQ
Quiescent Current
With Line
05
05
mA
Change
(b30 s VIN s b14 5)
(b30 sVIN s b17 5)
V
With Load 5 mA s IOUT s 1A
05
05
mA
Vn
Output Noise Voltage TA e 25 C 10 Hz s f s 100 Hz
300
375
mV
Ripple Rejection
f e 120 Hz
54
70
54
70
dB
(b25 s VIN s b15)
(b30 s VINs b17 5)
V
Dropout Voltage
TJ e 25 C IOUT e 1A
11
11
V
IOMAX Peak Output Current TJ e 25 C
22
22
A
Average Temperature IOUT e 5 mA
Coefficient of
0 C s TJ s 100 C
Output Voltage
b0 8
b1 0
mV C
Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur Operating Ratings indicate conditions for which the device is
intended to be functional but do not guarantee Specific Performance limits For guaranteed specifications and test conditions see the Electrical Characteristics
Note 2 Refer to Typical Performance Characteristics and Design Considerations for details
Note 3 Regulation is measured at a constant junction temperature by pulse testing with a low duty cycle Changes in output voltage due to heating effects must be
taken into account
Typical Applications (Continued)
Dual Trimmed Supply
TL H 7340 – 4
3
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