Datasheet

V
PGOOD
(5V/Div)
I
L
(10A/Div)
V
OUT
(1V/Div)
V
OUT
(500 mV/Div)
V
PGOOD
(5V/Div)
V
TRACK
(500 mV/Div)
I
OUT
(10A/Div)
V
OUT
(500 mV/Div)
V
PGOOD
(5V/Div)
V
ENABLE
(5V/Div)
I
OUT
(10A/Div)
V
OUT
(10 mV/Div)
V
OUT
(500 mV/Div)
V
PGOOD
(5V/Div)
V
ENABLE
(5V/Div)
LM21215
www.ti.com SNVS625E –FEBRUARY 2011–REVISED MARCH 2013
Typical Performance Characteristics (continued)
Unless otherwise specified: V
IN
= 5V, V
OUT
= 1.2V, L= 0.56µH (1.8mΩ R
DCR
), C
SS
= 33nF, T
A
= 25°C for efficiency curves,
loop gain plots and waveforms, and T
J
= 25°C for all others.
Figure 18. Figure 19.
Output Voltage Ripple
(I
OUT
= 15A) Startup with Prebiased Output
2 ms/DIV
2 µs/DIV
Figure 20. Figure 21.
Startup with SS/TRK Open Circuit Startup with applied Track Signal
200 µs/DIV
200 ms/DIV
Figure 22. Figure 23.
Output Over-Current Condition
(R
ILIM
= 20 kΩ)
100 µs/DIV
Figure 24.
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