XR79106 Datasheet, PDF (9/19 Pages) Exar Corporation – 22V, 6A Synchronous Step-Down

XR79106
Typical Performance Characteristics (Continued)
Efficiency and Package Thermal Derating
T_A = 25°C, no airflow, f = 600kHz, unless otherwise specified. Schematic shown in Figure 27.
100
95
90
85
80
75
70
65
0.1
3.3V DCM
2.5V DCM
1.8V DCM
1.5V DCM
1.2V DCM
1.0V DCM
1.0
IOUT (A)
3.3V CCM
2.5V CCM
1.8V CCM
1.5V CCM
1.2V CCM
1.0V CCM
Figure 20. Efficiency, V_IN = 5V
125
115
105
95
85
75
3.3V CCM
1.8V CCM
1.0V CCM
65
1
2
3
4
5
6
IOUT (A)
Figure 21. Maximum T_AMBIENT vs. I_OUT,
V_IN = 5V
100
95
90
85
80
75
70
65
0.1
800kHz
5.0V DCM
3.3V DCM
2.5V DCM
1.8V DCM
1.5V DCM
1.2V DCM
1.0V DCM
5.0V CCM
3.3V CCM
2.5V CCM
1.8V CCM
1.5V CCM
1.2V CCM
1.0V CCM
1.0
IOUT (A)
Figure 22. Efficiency, V_IN = 12V
125
115
105
95
800kHz
85
5.0V CCM
75
1.8V CCM
1.0V CCM
65
1
2
3
4
5
6
IOUT (A)
Figure 23. Maximum T_AMBIENT vs. I_OUT,
V_IN = 12V
REV1B
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