lm5050mkx-1 National Semiconductor Corporation, lm5050mkx-1 Datasheet - Page 12

• Manufacturer Part Number: lm5050mkx-1
• Description: High Side Or-ing Fet Controller
• Manufacturer: National Semiconductor Corporation

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reasonably well controlled, since the R
increases as the junction temperature increases.
Operating with a maximum ambient temperature (T
35°C, a load current of 10A, and an R
desiring to keep the junction temperature under 100°C, the
Typical Applications
P
DISS
= I
D
2
x (R
FIGURE 9. Using a Separate VS Supply For Low Vin Operation
FIGURE 10. Basic Application with Input Transient Protection
DS(ON)
DS(ON)
DS(ON)
)
of the MOSFET
of 10 mΩ, and
A(MAX)
) of
12
maximum junction-to-ambient thermal resistance rating (θ
would need to be:
θ
JA
θ
JA
≤
≤
(100°C - 35°C)/(10A x 10A x 0.01Ω)
(T
J(MAX)
θ
JA
- T
≤
A(MAX)
65°C/W
)/(I
30104842
D
2
x R
DS(ON)
30104845
)
JA
)