Datasheet

V
SW
5 V/div
V
O
20 mV/div
I
(Inductor)
1 A/div
500 ns/div
V
I
= 12 V,
V
O
= 3.3 V/1.5 A
V
SW
5 V/div
V
O
20 mV/div
I
(Inductor)
100 mA/div
500 ns/div
V
I
= 12 V,
V
O
= 3.3 V/45 mA
0
10
20
30
40
50
60
70
80
90
0 0.5 1 1.5 2
V
I
= 12 V,
V
O
= 3.3 V,
L = 15 mH
I
O
− Output Current − A
Efficiency − %
0
0.05
0.1
0.15
0.2
0.25
−40 −20 0 20 40 60 80 100 120 140
r
DS(on)
− N-Channel Switch −
V
I
= 8 V,
V
I
= 12 V,
V
I
= 14 V
T
A
− Temperature − 5C
Ω
TPS65161
TPS65161A, TPS65161B
SLVS617E –APRIL 2006–REVISED MARCH 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
STEP-DOWN CONVERTER
EFFICIENCY STEP-DOWN CONVERTER r
DS(ON)
- N-CHANNEL SWITCH
vs vs
LOAD CURRENT TEMPERATURE
Figure 7. Figure 8.
STEP-DOWN CONVERTER STEP-DOWN CONVERTER
PWM OPERATION PWM OPERATION
CONTINUOUS MODE DISCONTINUOUS MODE
Figure 9. Figure 10.
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