LTM4602
TYPICAL PERFORMANCE CHARACTERISTICS (See Figure 21 for all curves)
V OUT
0.5V/DIV
I IN
0.5A/DIV
Start-Up, No Load, I OUT = 0A
V OUT
0.5V/DIV
I IN
0.5A/DIV
Start-Up, I OUT = 6A
(Resistive Load)
V OUT
0.5V/DIV
I IN
0.5A/DIV
Short-Circuit Protection,
I OUT = 0A
V IN = 12V 200 μ s/DIV
V OUT = 1.5V
C OUT = 1 × 22 μ F, 6.3V X5R
330 μ F, 4V SANYO POSCAP
4602 G10
V IN = 12V 500 μ s/DIV
V OUT = 1.5V
C OUT = 1 × 22 μ F, 6.3V X5R
330 μ F, 4V SANYO POSCAP
4602 G11
V IN = 12V 20 μ s/DIV
V OUT = 1.5V
C OUT = 1 × 22 μ F, 6.3V X5R
330 μ F, 4V SANYO POSCAP
4602 G12
NO EXTERNAL SOFT-START CAPACITOR
Short-Circuit Protection,
NO EXTERNAL SOFT-START CAPACITOR
NO EXTERNAL SOFT-START CAPACITOR
I OUT = 6A
V IN to V OUT Step-Down Ratio
V OUT
0.5V/DIV
5.5
5.0
4.5
4.0
3.5
f ADJ = OPEN
5V
3.3V
I IN
0.5A/DIV
3.0
2.5
2.0
2.5V
1.8V
V IN = 12V 20 μ s/DIV
V OUT = 1.5V
C OUT = 1 × 22 μ F, 6.3V X5R
4602 G13
1.5
1.0
1.2V
1.5V
330 μ F, 4V SANYO POSCAP
NO EXTERNAL SOFT-START CAPACITOR
0.5
0
0
5
0.6V
10
15
20
V IN (V)
SEE FREQUENCY ADJUSTMENT DISCUSSION
FOR 12V IN TO 5V OUT AND 5V IN TO 3.3V OUT
CONVERSION
4602 G14
4602fa
5
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