Regulator ics ba3940a – Rainbow Electronics BA3940A User Manual
Page 7
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F
External dimensions (Units: mm)
198
Regulator ICs
BA3940A
F
Thermal derating curve
Estimate of allowable power dissipation (P
MAX.
)
S
Power consumed by OUT 7V
P
1
= (V
CC
*
7V)
maximum load current of OUT 7V
S
Power consumed by OUT 5V
P
2
= (V
CC
*
5V)
maximum load current of OUT 5V
S
Power consumed by OUT 9V
P
3
= (V
CC
*
9V)
maximum load current of OUT 9V
S
Power consumed internally by each circuit
P
4
= V
CC
supply current
P
MAX.
= P1
)
P2
)
P3
)
P4
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