Datasheet

0
10
20
30
40
50
60
70
80
100
0 0.5 1.0 1.5 2.0
I - Output Current - A
O
Efficiency - %
2.5 3.0
90
3.5 4.0
6Vin
12Vin
24Vin
36Vin
42Vin
0
10
20
30
40
50
60
70
80
100
0.001 0.01
I - Output Current - A
O
Efficiency - %
0.1
90
1
6Vin
12Vin
24Vin
36Vin
42Vin
0
10
20
30
40
50
60
70
80
100
0 0.5 1.0 1.5 2.0
I - Output Current - A
O
Efficiency - %
2.5 3.0
90
3.5
6Vin
12Vin
24Vin
36Vin
42Vin
0
10
20
30
40
50
60
70
80
100
0.001 0.01
I - Output Current - A
O
Efficiency - %
0.1
90
1
6Vin
12Vin
24Vin
36Vin
42Vin
Time = 40 s/divm
2 V/div
V
IN
V
OUT
Time = 40 s/divm
2 V/div
V
IN
V
OUT
TPS54340
www.ti.com SLVSBK0B –OCTOBER 2012–REVISED MARCH 2014
I
OUT
= 100 mA EN Floating I
OUT
= 1 A EN Floating
Figure 47. Low Dropout Operation Figure 48. Low Dropout Operation
V
OUT
= 3.3 V ƒsw = 600 kHz V
OUT
= 3.3 V ƒsw = 600 kHz
Figure 49. Efficiency vs Load Current Figure 50. Light Load Efficiency
V
OUT
= 5 V ƒsw = 600 kHz V
OUT
= 5 V ƒsw = 600 kHz
Figure 51. Efficiency vs Load Current Figure 52. Light Load Efficiency
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