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LM145 датащи(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали LM145
подробное описание детали  Negative Three Amp Regulator
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM145 датащи(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings
If MilitaryAerospace specified devices are required
please contact the National Semiconductor Sales
OfficeDistributors for availability and specifications
(Note 3)
Input Voltage
20V
Input-Output Differential
20V
Power Dissipation
Internally Limited
Operating Junction Temperature Range
LM145
b
55 Cto a150 C
LM345
0 Cto a125 C
Storage Temperature Range
b
65 Cto a150 C
Lead Temperature (Soldering 10 sec)
300 C
Electrical Characteristics (Note 1)
Limits
Parameter
Conditions
LM145
LM345
Units
Min
Typ
Max
Min
Typ
Max
Output Voltage
Tj e 25 C IOUT e 5 mA
b
51
b
50
b
49
b
52
b
50
b
48
V
VIN eb75
Line Regulation (Note 2)
Tj e 25 C
5
15
5
25
mV
b
20V s VIN s b75V
Load Regulation (Note 2)
Tj e 25 C VIN eb75V
30
75
30
100
mV
5mA s IOUT s 3A
Output Voltage
b
20V s VIN s b78V
5mA s IOUT s 3A
P s 25W
b
520
b
480
b
525
b
475
V
TMIN s Tj s TMAX
Quiescent Current
b
20V s VIN s b75V
10
30
10
30
mA
5mA s IOUT s 3A
Short Circuit Current
VIN eb75V Tj ea25 C
4
55
4
55
A
VIN eb20V Tj ea25 C
2
35
2
35
A
Output Noise Voltage
TA e 25 C CL e 47 mF
150
150
m
V
10 Hz s f s 100 kHz
Long Term Stability
5
50
5
50
mV
Thermal Resistance
22
CW
Junction to Case
Note 1
Unless otherwise specified these specifications apply b55 C s Tj s a150 C for the LM145 and 0 C s Tj s a125 C for the LM345 VIN e 75V and
IOUT e 5 mA Although power dissipation is internally limited electrical specifications apply only for power levels up to 25W For calculations of junction
temperature rise due to power dissipation use a thermal resistance of 35 CW for the TO-3 with no heat sink With a heat sink use 2 CW for junction to case
thermal resistance
Note 2
Regulation is measured at constant junction temperature Changes in output voltage due to heating effects must be taken into account separately To
ensure constant junction temperature pulse testing with a low duty cycle is used
Note 3
Refer to RETS145K-5V for LM145K-50 military specifications
Connection Diagram
Metal Can Package
TLH7785 – 2
Bottom View
Order Number LM345K-50
See NS Package Number K02A
Order Number LM145K-50883 or
SMD
5962-9064501
See NS Package Number K02C
Typical Applications
Fixed Regulator
TLH7785 – 3
Required for stability For value given capacitor must be solid tantalum
50 mF aluminum electrolytic may be substituted Values given may be in-
creased without limit
Required if regulator is separated from filter capacitor For value given ca-
pacitor must be solid tantulum 50 mF aluminum electrolytic may be substi-
tuted
2


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