XR77103-A0R5 Datasheet, PDF (11/19 Pages) Exar Corporation – Universal PMIC 3-Output Buck Regulator

Typical Performance Characteristics (Continued)
Thermal Characteristics
4
3.5
3
2.5
2
1.5
1
0.5
0
0 10 20 30 40 50 60 70 80 90 100 110 120
TAMBIENT (°C)
Figure 20. Package Thermal Derating
0.9
0.8
1.2V
0.7
1.8V
0.6
3.3V
0.5
0.4
0.3
0.2
0.1
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 22. Channel 2 Power Loss at
f_SW = 500kHz, V_IN = 12V, No Airflow
1.4
1.2V
1.2
1.8V
1
3.3V
0.8
0.6
0.4
0.2
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 24. Channel 1 Power Loss at
f_SW = 500kHz, V_IN = 5V, No Airflow
REV1A
XR77103-A0R5
0.8
0.7
1.2V
1.8V
0.6
3.3V
0.5
0.4
0.3
0.2
0.1
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 21. Channel 1 Power Loss at
f_SW = 500kHz, V_IN = 12V, No Airflow
0.9
0.8
1.2V
0.7
1.8V
0.6
3.3V
0.5
0.4
0.3
0.2
0.1
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 23. Channel 3 Power Loss at
f_SW = 500kHz, V_IN = 12V, No Airflow
1.4
1.2V
1.2
1.8V
1
3.3V
0.8
0.6
0.4
0.2
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 25. Channel 2 Power Loss at
f_SW = 500kHz, V_IN = 5V, No Airflow
11/19