LTM4600
TYPICAL PERFORMANCE CHARACTERISTICS (See Figure 18 for all curves)
Start-Up, I OUT = 0A
V OUT
(0.5V/DIV)
I IN
(0.5A/DIV)
Start-Up, I OUT = 10A
(Resistive Load)
V OUT
(0.5V/DIV)
I IN
(0.5A/DIV)
Short-Circuit Protection,
I OUT = 0A
V OUT
(0.5V/DIV)
I IN
(0.2A/DIV)
200μs/DIV
4600 G10
200μs/DIV
4600 G11
20μs/DIV
4600 G12
V IN = 12V
V OUT = 1.5V
C OUT = 200μF
NO EXTERNAL SOFT-START CAPACITOR
Short-Circuit Protection,
I OUT = 10A
V IN = 12V
V OUT = 1.5V
C OUT = 200μF
NO EXTERNAL SOFT-START CAPACITOR
V IN to V OUT Step-Down Ratio
V IN = 12V
V OUT = 1.5V
C OUT = 2 × 200μF/X5R
NO EXTERNAL SOFT-START CAPACITOR
12V Input Load Regulation vs
Temperature
V OUT
(0.5V/DIV)
I IN
5.5
5.0
4.5
4.0
3.5
f ADJ = OPEN
5V
3.3V
0.00
–0.05
–0.10
–0.15
(0.5A/DIV)
20μs/DIV
V IN = 12V
V OUT = 1.5V
C OUT = 2 × 200μF/X5R
NO EXTERNAL SOFT-START CAPACITOR
4600 G13
3.0
2.5
2.0
1.5
1.0
0.5
0
0
5
0.6V
10
2.5V
1.8V
1.5V
1.2V
15
20
–0.20
–0.25
–0.30
–0.35
–0.40
–0.45
0
5
25 ° C
100 ° C
–45 ° C
10
V IN (V)
SEE FREQUENCY ADJUSTMENT DISCUSSION
LOAD CURRENT
4600 G15
FOR 12V IN TO 5V OUT AND 5V IN TO 3.3V OUT
CONVERSION
4600 G14
4600fc
5
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