Datasheet


SLVS426 − MAY 2002
www.ti.com
25
Figure 31
I
O
− Output Current − A
− Output Voltage − V
SBRC CH3 OUTPUT LOAD REGULATION
V
O
PWM Mode
V
IN
= 12 V
1.760
1.765
1.770
1.775
1.780
1.785
1.790
0123456
Figure 32
I
O
− Output Current − A
− Output Voltage − V
LDO OUTPUT LOAD REGULATION
V
O
1.450
1.455
1.460
1.465
1.470
1.475
1.480
0123
V
(LDO_IN)
= V
O
3
Figure 33
50 mV/div
I
O
1 = 0 A
2 A
4 A
SBRC CH1 OUTPUT VOLTAGE RIPPLE
V
IN
= 12 V, V
O
1 = 3.3 V
1 µs/div
Figure 34
50 mV/div
I
O
2 = 0 A
2 A
4 A
SBRC CH2 OUTPUT VOLTAGE RIPPLE
V
IN
= 12 V, V
O
2 = 5 V
1 µs/div
Figure 35
20 mV/div
I
O
2 = 0 A
4 A
6 A
SBRC CH3 OUTPUT VOLTAGE RIPPLE
V
IN
= 12 V, V
O
3 = 1.8 V
1 µs/div
Figure 36
10 mV/div
I
O
= 0.3 A
1 A
3 A
LDO OUTPUT VOLTAGE RIPPLE
V
IN
= 12 V, V
(LDO_IN)
= V
O
3 = 1.8 V,
I
O
3 = 0 A
1 µs/div
Figure 37
SBRC CH1 LOAD TRANSIENT RESPONSE
100 µs/div
V
O
1
20 mV/div
I
O
1
2 A/div
4 A
0 A
V
IN
= 12 V, V
O
1 = 3.3 V
Figure 38
SBRC CH2 LOAD TRANSIENT RESPONSE
100 µs/div
V
O
2
20 mV/div
I
O
2
2 A/div
4 A
0 A
V
IN
= 12 V, V
O
2 = 5 V