XR77103 Datasheet, PDF (13/28 Pages) Exar Corporation – 3-Output Programmable Buck Regulator

XR77103
Typical Performance Characteristics (Continued)
Thermal Characteristics
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1.2V
1.8V
3.3V
0.4
0.8
1.2
1.6
IOUT (A)
Figure 27. Channel 3 Power Loss at
f_SW = 500kHz, V_IN = 5V, No Airflow
1.8V
2.5V
3.3V
0.4
0.8
1.2
1.6
IOUT (A)
Figure 29. Channel 2 Power Loss at
f_SW = 1MHz, V_IN = 12V, No Airflow
1.2V
1.8V
2.5V
3.3V
0.4
0.8
1.2
1.6
IOUT (A)
Figure 31. Channel 1 Power Loss at
f_SW = 1MHz, V_IN = 5V, No Airflow
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2
0
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2
0
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2
0
REV1B
1.8V
2.5V
3.3V
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 28. Channel 1 Power Loss at
f_SW = 1MHz, V_IN = 12V, No Airflow
1.8V
2.5V
3.3V
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 30. Channel 3 Power Loss at
f_SW = 1MHz, V_IN = 12V, No Airflow
1.2V
1.8V
2.5V
3.3V
0.4
0.8
1.2
1.6
IOUT (A)
Figure 32. Channel 2 Power Loss at
f_SW = 1MHz, V_IN = 5V, No Airflow
2
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