Datasheet

V
2 V/div
sw
V
20 mV/div
o
I
500 mA/div
inductor
V
V = 1.8 V/100 mA
f = 2.8 MHz, L = 0.47 µH
in
o
= 3.7 V
1 µs/div
G014
I
1 A/div
o
V
20 mV/div
o
I
500 mA/div
inductor
V
V = 1.8 V
f = 1.4 MHz, L = 1 µH
in
o
= 3.7 V
200 µs/div
G015
V
2 V/div
sw
V
20 mV/div
o
I
500 mA/div
inductor
V
V = 1.8 V/100 mA
f = 1.4 MHz, L = 1 µH
in
o
= 3.7 V
1 µs/div
G013
V
2 V/div
sw
V
20 mV/div
o
I
1 A/div
inductor
V
V =1.8 V/3 A
f = 1.4 MHz, L = 1 µH
in
o
= 3.7 V
400 ns/div
G012
1.79
1.795
1.8
1.805
1.81
1.815
1.82
1.825
1.83
100m 1 10 100 1k 10k
I load (mA)
Output Voltage (V)
V
IN
= 5.0 V
V
IN
= 4.2 V
V
IN
= 3.7 V
V
OUT
= 1.8 V
L = 1 µH
f = 1.4 MHz
G007
1.79
1.795
1.8
1.805
1.81
1.815
1.82
1.825
1.83
100m 1 10 100 1k 10k
I load (mA)
Output Voltage (V)
V
IN
= 5.0 V
V
IN
= 4.2 V
V
IN
= 3.7 V
V
OUT
= 1.8 V
L = 0.4 µH
f = 2.8 MHz
G008
TPS62090 , TPS62091 , TPS62092 , TPS62093
SLVSAW2B –MARCH 2012–REVISED APRIL 2014 www.ti.com
Figure 16. Output Voltage vs Load Current Figure 17. Output Voltage vs Load Current
Figure 18. PWM Operation
Figure 19. PFM Operation
Figure 20. PFM Operation Figure 21. Load Sweep
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