NCV8184DG ON Semiconductor, NCV8184DG Datasheet - Page 15

• Manufacturer Part Number: NCV8184DG
• Description: IC REG/LINEDRVR LDO 70MA 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of NCV8184DG

• 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)
• Number Of Outputs: 1
• Polarity: Negative, Positive
• Input Voltage Max: 26 V
• Output Voltage: - 3 V to + 42 V
• Output Type: Adjustable
• Dropout Voltage (max): 0.15 V at 100 uA
• Output Current: 70 mA
• Line Regulation: 3 mV
• Load Regulation: 3 mV
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Reference Voltage: 2.1 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

*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 3. DPAK 5−LEAD 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
Drain Copper Area (1 oz thick)
(SPICE Deck Format)
Junction
Junction
node1
node2
node3
node1
node2
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
22.7616126
17.9894079
22.7199543
0.0000016
0.0000060
0.0000177
0.0001586
0.0001927
0.0056684
0.0832719
0.1125429
0.5161495
1.4600223
0.8287213
1.9304163
4.7751915
2.3736457
2.0679537
5.3364094
6.0331860
100 mm
100 mm
100 mm
Cauer Network
2
2
2
http://onsemi.com
16.7871407
16.1165074
0.0000016
0.0000060
0.0000177
0.0001587
0.0001931
0.0058019
0.1225791
0.3555671
1.2959188
1.8396650
0.8287120
1.9303119
4.7743247
2.3705112
2.0623650
5.1102633
3.2428679
8.6995800
645 mm
645 mm
645 mm
15
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
0.490938
1.061544
3.356895
1.606314
9.147005
17.23178
41.92202
1.00E-06
1.00E-05
1.00E-04
1.76E-04
i + 1
0.0010
S
0.030
0.285
3.00
9.03
55.2
5.00
5.00
2.00
n
Tau
R’s
Foster Network
R i 1−e −t tau i
2
645 mm
0.490938
1.061544
3.356895
1.606314
5.071663
3.646957
34.68827
1.00E-06
1.00E-05
1.00E-04
1.76E-04
0.0010
0.030
0.299
11.80
3.00
79.0
5.00
5.00
2.00
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