XR79203 Datasheet, PDF (7/19 Pages) Exar Corporation – 40V, 3A Synchronous Step-Down

XR79203
Typical Performance Characteristics (Continued)
T_A = 25°C, V_IN = 24V, V_OUT = 3.3V, I_OUT = 3A, f = 500kHz, unless otherwise specified. Schematic shown in Figure 27.
6
Calculated worst case
5
Typical
4
3
2
1
0
1
1.2
1.4
1.6
1.8
2
2.2
2.4
RLIM (kΩ)
Figure 9. I_OCP vs. R_LIM
610
605
600
595
590
-40 -20 0 20 40 60 80 100 120
TJ (°C)
Figure 10. V_REF vs. Temperature
280
260
240
220
200
180
160
140
120
100
-40 -20 0
20 40 60
TJ (°C)
80 100 120
Figure 11. t_ON vs. Temperature, R_ON = 14kΩ
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
1
2
3
4
5
6
Current (A)
Figure 12. Inductance vs. Current
2.0
500kHz
1.5
600kHz
700kHz
1.0
0.5
0.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT (V)
Figure 13. Inductor Current Ripple vs. V_OUT
REV1B
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