AMIS-39100 Datasheet, PDF (6/16 Pages) AMI SEMICONDUCTOR – Octal High Side Driver with Protection

AMIS-39100: Octal High Side Driver with Protection
Data Sheet
8.2 Thermal Characteristics
Table 4: Thermal Characteristics of the Package
Symbol
Description
R_th(vj-a)
Thermal resistance from junction to ambient in power-SO28 package
Conditions
In free air
Value
145
Unit
K/W
Table 5: Thermal Characteristics of the AMIS-39100 on a PCB
PCB Design
Conductivity Top and Bottom Layer
Two layer (35um) Copper planes according to Figure 4 + 25% copper for the remaining areas
Two layer (35um) Copper planes according to Figure 4 + 0% copper for the remaining areas
Four layer JEDEC: 25% copper coverage
EIA/JESD51-7
One layer JEDEC: 25% copper coverage
EIA/JESD51-3
Note:
(1) These values are informative only.
R_thja = Thermal resistance from junction to ambient
R_thja ⁽¹⁾
24
53
25
46
Unit
K/W
K/W
K/W
K/W
Top PCB view
5 mm
5 mm
5 mm
GND copper
5 mm
114.3
Bottom PCB view
Ground plane GND copper
25 % filled by GND copper
76.2
76.2
Figure 4: Layout Recommendation for Thermal Characteristics
114.3
AMI Semiconductor – Jan. 07, M-20557-002
6
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