AN4233

Test results with the STA333IS and 2- or 4-layer PCB

Doc ID 024143 Rev 1

9/12

3.4

STA333IS: 1000 mA output current and 4-layer PCB

Figure 5.

STA333IS: 1000 mA output current and 4-layer PCB - thermal measurement

Table 9.

STA333IS: 500 mA output current and 4-layer PCB - summary table

Total power [W]

0.4033

W

Temperature (case) [°C]

42

°C

Temperature (ambient) [°C]

26

°C

39.672

°C/W

Table 10.

STA333IS: 1000 mA output current and 4-layer PCB - current measurement

[m

Ω]

[mV]

I_Channel

[A]

[mV]

[mW]

RDS

[m

Ω]

Vcc

[V]

I_Vcc

[mA]

Vdd

[V]

I_Vdd

[mA]

Out 1A

100

101.8

1.018

137

139.466

134.5776

16.58

19.5

3.3

32

Out 1B

100

100.5

1.005

146.5

147.2325 145.77114

Out 2A

100

101.4

1.014

147.5

149.565

145.46351

Out 2B

100

101.9

1.019

137

139.603

134.44553

Table 11.

STA333IS: 1000 mA output current and 4-layer PCB - power dissipation

Power_Output [W]

0.57587

W

Power_Vdd [W]

0.1056

W

Power_Vcc [W]

0.32331

W