LM145 National Semiconductor, LM145 Datasheet - Page 2

• Manufacturer Part Number: LM145
• Description: Negative Three Amp Regulator
• Manufacturer: National Semiconductor

Output Voltage
Line Regulation (Note 2)
Load Regulation (Note 2)
Output Voltage
Quiescent Current
Short Circuit Current
Output Noise Voltage
Long Term Stability
Thermal Resistance
Junction to Case
Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
(Note 3)
Input Voltage
Input-Output Differential
Electrical Characteristics
Note 1 Unless otherwise specified these specifications apply
I
temperature rise due to power dissipation use a thermal resistance of 35 C W for the TO-3 with no heat sink With a heat sink use 2 C W 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-5 0 military specifications
Connection Diagram
OUT
e
Parameter
5 mA Although power dissipation is internally limited electrical specifications apply only for power levels up to 25W For calculations of junction
Order Number LM145K-5 0 883 or
See NS Package Number K02A
See NS Package Number K02C
Order Number LM345K-5 0
SMD
Metal Can Package
Bottom View
5962-9064501
T
V
T
b
T
5 mA
b
5 mA
P
T
b
5 mA
V
V
T
10 Hz
j
IN
j
j
MIN s
IN
IN
A
s
20V
20V
20V
e
e
e
e
e b
e b
e b
25W
25 C I
25 C
25 C V
s
s
s
25 C C
s
s
s
s
Conditions
T
I
I
I
OUT s
OUT s
OUT s
f
7 5
7 5V T
20V T
V
V
j s
V
s
IN s
IN s
IN s
OUT
IN
100 kHz
T
L
(Note 1)
MAX
e b
e
j
b
b
b
3A
3A
3A
j
e
e a
e a
7 5V
7 8V
7 5V
4 7 F
5 mA
7 5V
TL H 7785– 2
25 C
b
25 C
55 C
20V
20V
s
T
j s
b
b
Min
5 20
5 1
a
2
150 C for the LM145 and 0 C
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 sec )
Typical Applications
Required for stability For value given capacitor must be solid tantalum
50
creased without limit
Required if regulator is separated from filter capacitor For value given ca-
pacitor must be solid tantulum 50 F aluminum electrolytic may be substi-
tuted
LM145
LM345
LM145
b
Typ
150
F aluminum electrolytic may be substituted Values given may be in-
1 0
30
5
4
2
5
2
5 0
b
b
Max
3 0
5 5
3 5
15
75
50
4 80
4 9
Limits
s
Fixed Regulator
T
b
b
j s
Min
5 25
5 2
a
125 C for the LM345 V
LM345
b
Typ
150
1 0
30
5
4
2
5
2
5 0
b
b
Internally Limited
55 C to
65 C to
b
0 C to
b
Max
100
3 0
5 5
3 5
25
50
4 75
4 8
IN
TL H 7785 – 3
e
a
a
a
7 5V and
150 C
125 C
150 C
300 C
Units
C W
mV
mV
mA
mV
V
V
A
A
V