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LM7912CT Scheda tecnica(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Il numero della parte LM7912CT
Spiegazioni elettronici  LM79XX Series 3-Terminal Negative Regulators
PDF  10 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM7912CT Scheda tecnica(HTML) 3 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued) Conditions unless otherwise noted IOUT e 500 mA CIN e 22 mF
COUT e 1 mF 0 C s TJ s a125 C Power Dissipation e 15W
Part Number
LM7912C
LM7915C
Units
Output Voltage
b
12V
b
15V
Input Voltage (unless otherwise specified)
b
19V
b
23V
Symbol
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
VO
Output Voltage
TJ e 25 C
b
115
b
120
b
125
b
144
b
150
b
156
V
5mA s IOUT s 1A
b
114
b
126
b
1425
b
1575
V
P s 15W
(b27 s VIN s b145)
(b30 s VIN s b175)
V
D
VO
Line Regulation
TJ e 25 C (Note 3)
5
80
5
100
mV
(b30 s VIN s b145)
(b30 s VINs b175)
V
3
30
3
50
mV
(b22 s VIN s b16)
(b26 s VIN sb20)
V
D
VO
Load Regulation
TJ e 25 C (Note 3)
5mA s IOUT s 15A
15
200
15
200
mV
250 mA s IOUT s 750 mA
5
75
5
75
mV
IQ
Quiescent Current
TJ e 25 C
15
3
15
3
mA
D
IQ
Quiescent Current
With Line
05
05
mA
Change
(b30 s VIN s b145)
(b30 sVIN s b175)
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
m
V
Ripple Rejection
f e 120 Hz
54
70
54
70
dB
(b25 s VIN s b15)
(b30 s VINs b175)
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
b
08
b
10
mV C
Coefficient of
0 C s TJ s 100 C
Output Voltage
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
TLH7340 – 4
3



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