Datasheet

400 Ps/DIV
2.0V
500 mA/div
5.0V
I
IN
V
SD
V
CSS
V
O
Pre-bias = 1.2V
40 Ps/DIV
500 mV
2.0V
1A/div
5.0V
I
IN
V
SD
V
CSS
V
O
20 Ps/DIV
I
IN
V
SD
V
CSS
V
O
2.0V
2A/div
5.0V
Pre-bias = 1.2V
V
O
= 2.5
LM2742
SNVS266C –MARCH 2004–REVISED MARCH 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Start-Up (Full-Load) Start Up (No-Load, 10x C
SS
)
V
IN
= 10V, V
O
= 1.2V V
IN
= 10V, V
O
= 1.2V
I
O
= 10A, C
SS
= 10nF, F
SW
= 300kHz C
SS
= 100nF, F
SW
= 300kHz
Figure 15. Figure 16.
Start Up (Full Load, 10x C
SS
) Start Up (Into 1.2V Pre-Bias)
V
IN
= 10V, V
O
= 1.2V V
IN
= 12V, V
O
= 2.5V
I
O
= 10A, C
SS
= 100nF, F
SW
= 300kHz No Load, No Soft Start Capacitor, F
SW
= 300kHz
Figure 17. Figure 18.
Start Up (Into 1.2V Pre-Bias) Shutdown
V
IN
= 12V, V
O
= 2.5V V
IN
= 12V, V
O
= 1.2V
No Load, C
SS
= 10nF, F
SW
= 300kHz I
O
= 10A, C
SS
= 10nF, F
SW
= 300kHz
Figure 19. Figure 20.
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