LTM4603/LTM4603-1
TYPICAL PERFORMANCE CHARACTERISTICS (See Figure 18 for all curves)
V OUT
0.5V/DIV
I IN
0.5A/DIV
Start-Up, 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
2A/DIV
Short-Circuit Protection,
I OUT = 0A
V IN = 12V 1ms/DIV
V OUT = 1.5V
C OUT = 1 × 22μF, 6.3V CERAMIC
1 × 330μF, 4V SANYO POSCAP
SOFT-START = 3.9nF
4603 G09
V IN = 12V 1ms/DIV
V OUT = 1.5V
C OUT = 1 × 22μF, 6.3V CERAMIC
1 × 330μF, 4V SANYO POSCAP
SOFT-START = 3.9nF
4603 G10
V IN = 12V 100μs/DIV
V OUT = 1.5V
C OUT = 1 × 22μF, 6.3V CERAMIC
1 × 330μF, 4V SANYO POSCAP
SOFT-START = 3.9nF
4603 G11
Short-Circuit Protection,
I OUT = 6A
V IN to V OUT Step-Down Ratio
V OUT
0.5V/DIV
I IN
2A/DIV
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
3.3V OUTPUT WITH
82.5k FROM V OUT
TO f SET
5V OUTPUT WITH
150k RESISTOR
ADDED FROM f SET
TO GND
5V OUTPUT WITH
NO RESISTOR ADDED
FROM f SET TO GND
2.5V OUTPUT
V IN = 12V 100μs/DIV
V OUT = 1.5V
C OUT = 1 × 22μF, 6.3V CERAMIC
1 × 330μF, 4V SANYO POSCAP
SOFT-START = 3.9nF
4603 G12
1.0
0.5
0
0
2
4
6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
1.8V OUTPUT
1.5V OUTPUT
1.2V OUTPUT
4603 G13
6
4603fb
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