Datasheet

1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Output Current (A)
Output Voltage (V)
V
IN
= 5 V
V
IN
= 12 V
V
IN
= 18 V
V
OUT
= 1.5 V
G005
3.20
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
3.40
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
G006
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20
EN Input Voltage (V)
EN Input Current (µA)
EN1
EN2
G003
3.20
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
3.40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Output Current (A)
Output Voltage (V)
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 18 V
V
OUT
= 3.3 V
G004
0
200
400
600
800
1000
1200
1400
1600
1800
2000
−50 0 50 100 150
Junction Temperature (°C)
Icc − Supply Current (dB)
V
IN1
, V
IN2
= 12 V
EN1, EN2 = ON
G001
0
2
4
6
8
10
12
14
16
18
20
−50 0 50 100 150
Junction Temperature (°C)
Supply Current−Shutdown Current (µA)
V
IN1
, V
IN2
= 12 V
EN1. EN2 = OFF
G002
TPS54494
www.ti.com SLVSBH1B –JUNE 2012–REVISED AUGUST 2013
TYPICAL CHARACTERISTICS
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 1. Input Current vs Junction Temperature Figure 2. Input Shutdown Current vs Junction Temperature
Figure 3. EN Current vs EN Voltage (VEN=12V) Figure 4. VO1=3.3V Output Voltage vs Output Current
Figure 5. VO2=1.5V Output Voltage vs Output Current Figure 6. VO1=3.3V Output Voltage vs Input Voltage
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