NCV8184 ON Semiconductor, NCV8184 Datasheet - Page 11

• Manufacturer Part Number: NCV8184
• Description: Micropower 70ma Low Dropout Tracking Regulator/line Driver
• Manufacturer: ON Semiconductor

1000
Junction
0.000001
Junction
100
0.1
0.000001
100
10
0.1
1
10
1
20%
10%
2%
1%
Die Size = 2.08 x 1.55 x 0.40 5.0% Active Area
5%
50% Duty Cycle
(1.0 in pad PCB) Die Size = 2.08 x 1.55 x 0.40 5.0% Active Area
Each rung is exactly characterized by its RC-product time constant;
Amplitudes are the resistances
Time constants are not simple RC products.
Amplitudes of mathematical solution are not the resistance values.
Single Pulse
0.00001
Figure 30. DPAK 5-Lead Thermal Duty Cycle Curves on 1.0 in. Spreader Test Board
C
0.00001
1
Figure 31. DPAK 5-Lead Thermal Transient Response on Typical Test Boards
R
C
R
1
1
1
Figure 33. Non-Grounded Capacitor Thermal Ladder (“Foster” Ladder)
Figure 32. Grounded Capacitor Thermal Network (“Cauer” Ladder)
0.0001
0.0001
C
2
R
C
R
2
2
2
0.001
0.001
C
http://onsemi.com
3
R
C
R
NCV8184
0.01
3
3
0.01
3
11
Time (s)
t1 (s)
0.1
0.1
1
1
Notes:
1.0 in pad (Cu Area = 653 mm
min pad (Cu Area = 100 mm
10
Duty Cycle, D =
10
P DM
(thermal ground)
(thermal ground)
C
t 1
Ambient
n
Ambient
t 2
100
R
C
R
100
n
n
n
t 1
t 2
2
2
)
)
1000
1000