LM2931CT ON Semiconductor, LM2931CT Datasheet - Page 10
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LM2931CT
Manufacturer Part Number
LM2931CT
Description
IC REG LDO 100MA ADJ TO220-5
Manufacturer
ON Semiconductor
Datasheet
1.LM2931AZ-5.0RAG.pdf
(23 pages)
Specifications of LM2931CT
Regulator Topology
Positive Adjustable
Voltage - Output
2.7 ~ 29.5 V
Voltage - Input
Up to 40V
Voltage - Dropout (typical)
0.16V @ 100mA
Number Of Regulators
1
Current - Output
100mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Straight Leads)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
Other names
LM2931CTOS
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2931CT
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM2931CT/NOPB
Manufacturer:
TINS
Quantity:
20 000
0.01
100
1.0
0.1
10
10
V
V
I
V
|Z
T
O
out
A
in
n
O
rms 10 Hz to 10 MHz
= 100 mA
= 25°C
| @ 40 kHz
= 5.6 V
= 5.0 V
|Z
Figure 22. Output Noise Voltage vs.
O
|, MAGNITUDE OF CAPACITOR IMPEDANCE (mW)
Output Capacitor Impedance
100
100
170
150
130
Figure 24. SOP−8 Thermal Resistance and Maximum
110
40
90
80
70
60
50
Figure 25. DPAK Thermal Resistance and Maximum
90
70
50
30
Power Dissipation versus P.C.B. Copper Length
Power Dissipation versus P.C.B. Copper Length
0
0
1.0 k
Mounted
Vertically
Free Air
Unstable
Marginally
Stable
Stable
5.0
10
Minimum
Size Pad
L, LENGTH OF COPPER (mm)
L, LENGTH OF COPPER (mm)
R
http://onsemi.com
10
qJA
10 k
20
Graph represents symmetrical layout
L
10
P
15
Î Î Î
Î Î Î
D(max)
Copper
2.0 oz.
P
R
0.50
0.40
0.30
0.20
0.10
L
0.60
0.00
D(max)
qJA
30
for T
0
Î Î Î
Î Î Î
20
A
10 mF
22 mF
100 mF
47 mF
Figure 23. Output Capacitor ESR Stability vs.
for T
= 50°C
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
10
L
2.0 oz. Copper
A
= 50°C
40
Î Î Î
Î Î Î
25
20
L
3.0 mm
30
Output Load Current
OUTPUT CURRENT (mA)
30
50
Note - Optimum stability uses a 22 mF
output capacitor. Output capacitor values
below 10 mF are not recommended.
2.4
1.6
1.2
0.8
0.4
0
2.0
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
40
50
Unstable
Stable
60
70
80
90
100