NCV8184D ON Semiconductor, NCV8184D Datasheet - Page 9

• Manufacturer Part Number: NCV8184D
• Description: IC REG/LINEDRVR LDO 70MA 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of NCV8184D

• Regulator Topology: Positive Adjustable
• Voltage - Output: Adjustable
• Voltage - Input: 4 ~ 42 V
• Voltage - Dropout (typical): 0.35V @ 60mA
• Number Of Regulators: 1
• Current - Limit (min): 70mA
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -

*Bold face items in the tables above represent the package without the external thermal system.
and may be divided between nodes to separate thermal
behavior due to one portion of the network from another.
The Foster networks, though when sorted by time constant
(as above) bear a rough correlation with the Cauer networks,
are really only convenient mathematical models. Cauer
networks can be easily implemented using circuit simulating
Table 1. SOIC−8 THERMAL RC NETWORK MODELS*
The Cauer networks generally have physical significance
C_C10
R_R10
C_C1
C_C2
C_C3
C_C4
C_C5
C_C6
C_C7
C_C8
C_C9
R_R1
R_R2
R_R3
R_R4
R_R5
R_R6
R_R7
R_R8
R_R9
Copper Area (1 oz thick)
Junction
Junction
node1
node2
node1
node2
node3
node3
node4
node5
node6
node7
node8
node9
node4
node5
node6
node7
node8
node9
node1
node2
node3
node4
node5
node6
node7
node8
node9
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
gnd
16.5499898
45.3838437
32.8928798
37.5059686
0.0000015
0.0000059
0.0000171
0.0001340
0.0001322
0.0010797
0.0087127
0.0863882
0.3109255
0.8359004
0.8380955
1.9719907
5.0213740
3.1295806
3.2483544
6.5922506
100 mm
100 mm
100 mm
Cauer Network
2
2
2
http://onsemi.com
16.2818051
34.7292748
24.4060143
0.0000015
0.0000059
0.0000171
0.0001340
0.0001323
0.0010811
0.0087918
0.0950421
1.0127094
1.5167041
0.8380935
1.9719679
5.0211819
3.1288061
3.2468794
6.5781209
7.6862725
645 mm
645 mm
645 mm
9
tools, whereas Foster networks may be more easily
implemented using mathematical tools (for instance, in a
spreadsheet program), according to the following formula:
2
2
2
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
W−s/C
Units
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
R(t) +
100 mm
1.070738
3.385971
1.617537
28.19863
71.26626
1.00E-06
1.00E-05
1.00E-04
1.76E-04
i + 1
0.49519
0.0010
S
0.008
0.150
15.00
20.00
3.00
8.96
52.5
5.10
7.00
n
Tau
R’s
Foster Network
R i 1−e −t tau i
2
645 mm
1.070738
3.385971
1.617537
16.67727
33.54171
1.00E-06
1.00E-05
1.00E-04
1.76E-04
0.49519
0.0010
0.008
0.150
15.00
20.00
3.00
5.15
68.4
5.10
7.00
Tau
R’s
2
Units
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec