LM2931CD ON Semiconductor, LM2931CD Datasheet - Page 10

• Manufacturer Part Number: LM2931CD
• Description: IC REG LDO 100MA ADJ 5% 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of LM2931CD

• 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: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Limit (min): -

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