Datasheet

VOUT 1V/DIV
EN 1V/DIV
PGOOD 1V/DIV
2 ms/DIV
IOUT 1A/DIV
2 ms/DIV
VOUT
1V/DIV
EN 1V/DIV
IOUT 1A/DIV
PGOOD 1V/DIV
2 ms/DIV
VOUT 1V/DIV
IOUT 1A/DIV
PGOOD 1V/DIV
EN 1V/DIV
LM21305
SNVS639F –DECEMBER 2009–REVISED MARCH 2013 www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified: V
IN
= 12V, V
OUT
= 3.3V, f
S
= 500 kHz, T
A
= 25°C, L = 3.3 µH, C
OUT
= 100 µF ceramic.
Soft-Start, No Load Soft-Start with Resistive Load
Figure 14. Figure 15.
Soft-Start with 2V Pre-Bias Voltage, No Load Switching Waveform with 0A Load (DCM Operation)
Figure 16. Figure 17.
Switching Waveform with 5A Load Load Transient 0.1A to 5A
Figure 18. Figure 19.
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