XR77103 Datasheet, PDF (11/28 Pages) Exar Corporation – 3-Output Programmable Buck Regulator

XR77103
Typical Performance Characteristics (Continued)
Efficiency
f_SW = 1MHz, T_A = 25°C, no airflow, only individual channel operating, inductor losses are included.
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 15. Efficiency Channel 1,
12V_IN 3.3V_OUT
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 16. Efficiency Channel 1,
5V_IN 3.3V_OUT
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 17. Efficiency Channel 2,
12V_IN 1.8V_OUT
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
2
IOUT (A)
Figure 18. Efficiency Channel 2,
5V_IN 1.8V_OUT
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
IOUT (A)
Figure 19. Efficiency Channel 3,
12V_IN 2.5V_OUT
2
REV1B
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
IOUT (A)
Figure 20. Efficiency Channel 3,
5V_IN 1.2V_OUT
2
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