LTM4608A
TYPICAL PERFORMANCE CHARACTERISTICS
V IN = 5V
20μs/DIV
V IN = 5V
20μs/DIV
V IN = 5V
20μs/DIV
I LOAD
2A/DIV
V OUT
20mV/DIV
AC COUPLED
Load Transient Response
4608A G10
V OUT = 1.8V, R FB = 4.87k
2.5A/μs STEP
C OUT = 100μF X5R
C1 = NONE, C3 = NONE FROM FIGURE 18
I LOAD
2A/DIV
V OUT
20mV/DIV
AC COUPLED
Load Transient Response
4608A G11
V OUT = 1.5V, R FB = 6.65k
2.5A/μs STEP
C OUT = 100μF X5R
C1 = NONE, C3 = NONE FROM FIGURE 18
I LOAD
2A/DIV
V OUT
20mV/DIV
AC COUPLED
Load Transient Response
4608A G12
V OUT = 1.2V, R FB = 10k
2.5A/μs STEP
C OUT = 2 × 100μF
C1 = 100pF, C3 = NONE FROM FIGURE 18
V OUT
0.5V/DIV
V IN
2V/DIV
Start-Up
602
600
598
596
V FB vs Temperature
V IN = 5.5V
V IN = 3.3V
0
–0.1
–0.2
–0.3
Load Regulation vs Current
V IN = 2.7V
594
–0.4
V IN = 5V 50μs/DIV
V OUT = 1.5V
C OUT = 100μF NO LOAD AND 8A LOAD
(DEFAULT 100μs SOFT-START)
4608A G13
592
590
–55
–25
5
35
65
95
125
–0.5
–0.6
0
FC MODE
V IN = 3.3V
V OUT = 1.5V
2
4
6
8
TEMPERATURE (°C)
4608A G14
LOAD CURRENT (A)
4608A G15
3.0
2.5V Output Current
Short-Circuit Protection
(2.5V Short, No Load)
Short-Circuit Protection
(2.5V Short, 4A Load)
2.5
2.0
1.5
2V/DIV
2V/DIV
5A/DIV
V IN
V OUT
I OUT
5V/DIV
5V/DIV
5A/DIV
V IN
V OUT
I OUT LOAD
1.0
0.5
V IN = 5V
V OUT = 2.5V
50μs/DIV
4608A G17
V IN = 5V
V OUT = 2.5V
50μs/DIV
4608A G18
0
0
5 10 15
20
OUTPUT CURRENT (A)
4608A G16
4608afd
6
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