Datasheet

Vout2(0.5V/div)
400 s/divm
PG2(5V/div)
EN2(10V/div)
0
10
20
30
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Output Current (A)
Efficiency (%)
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 18 V
G012
Vout(50mV/div)
100 s/divm
Iout(1A/div)
Vout(1V/div)
PG1(5V/div)
400 s/divm
EN1(10V/div)
Iout(2A/div)
100 s/divm
Vout(50mV/div)
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
0 2 4 6 8 10 12 14 16 18 20
Input Voltage (V)
Output Voltage (V)
I
OUT
= 10 mA
I
OUT
= 1 A
G007
TPS54494
SLVSBH1B –JUNE 2012–REVISED AUGUST 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
One output is enabled unless otherwise noted. V
IN
= V
IN1
or V
IN2
. V
IN
= 12 V, T
A
= 25°C (unless otherwise noted).
Figure 7. VO2=1.5V Output Voltage vs Input Voltage Figure 8. VO1=3.3V, 0 A to 4 A Load Transient Response
Figure 9. VO2=1.5V, 0 A to 2 A Load Transient Response Figure 10. VO1=3.3V, PG1
Figure 11. VO2=1.5V, PG2 Figure 12. VO1=3.3V, Efficiency vs Output Current
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