Datasheet

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