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