Datasheet

VND5025AK-E Package and thermal data
Doc ID 12581 Rev 11 25/32
Figure 30. PowerSSO-24™ thermal impedance junction to ambient single pulse (one
channel ON)
Equation 1: pulse calculation formula
where δ = t
P
/T
Figure 31. Thermal fitting model of a double channel HSD in PowerSSO-24™
(1)
1. The fitting model is a semplified thermal tool and is valid for transient evolutions where the embedded
protections (power limitation or thermal cycling during thermal shutdown) are not triggered.
0.1
1
10
100
1000
0.0001 0.001 0.01 0.1 1 10 100 1000
Time (s)
ZTH (°C/W)
Footprint
8 cm
2
2 cm
2
Z
THδ
R
TH
δ Z
THtp
1 δ–()+⋅=