AN4233

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

Doc ID 024143 Rev 1

7/12

3.2

STA333IS: 1000 mA output current and 2-layer PCB

Figure 3.

STA333IS: 1000 mA output current and 2-layer PCB 2 - thermal measurement

Table 3.

STA333IS: 500 mA output current and 2-layer PCB - summary table

Total power [W]

0.41096

W

Temperature (case) [°C]

44.8

°C

Temperature (ambient) [°C]

26

°C

45.747

°C/W

Table 4.

STA333IS: 1000 mA output current and 2-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

102.8

1.028

147.7

151.8356

143.67704

17.05

19.87

3.3

32

Out 1B

100

103.9

1.039

162.63

168.97257 156.52551

Out 2A

100

103.7

1.037

163.1

169.1347

157.28062

Out 2B

100

104.24

1.0424

149.63

155.97431 143.54375

Table 5.

STA333IS: 1000 mA output current and 2-layer PCB - power dissipation

Power_Output [W]

0.64592

W

Power_Vdd [W]

0.1056

W

Power_Vcc [W]

0.33878

W