LTM4608 LINER [Linear Technology], LTM4608 Datasheet - Page 6

• Manufacturer Part Number: LTM4608
• Description: Low VIN, 8A DC/DC ?ModuleTM with Tracking, Margining, and Frequency Synchronization
• Manufacturer: LINER [Linear Technology]

LTM4608
TYPICAL PERFORMANCE CHARACTERISTICS
20mV/DIV
6
0.5V/DIV
2V/DIV
2A/DIV
V
3.0
2.5
2.0
1.5
1.0
0.5
OUT
V
0
IN
0
Load Transient Response
Start-Up
2.5V Output Current
V
V
2.5A/μs STEP
C
C1 = NONE, C3 = NONE FROM FIGURE 18
V
V
C
(DEFAULT 100μs SOFT-START)
IN
OUT
OUT
IN
OUT
OUT
= 5V
= 5V
= 1.8V
= 100μF X5R
= 1.5V
= 100μF NO LOAD AND 8A LOAD
5
OUTPUT CURRENT (A)
50μs/DIV
20μs/DIV
10
15
4608 G16
4608 G10
4608 G13
20
20mV/DIV
2V/DIV
2V/DIV
5A/DIV
2A/DIV
594
602
600
598
596
592
590
–50
V
Short-Circuit Protection
(2.5V Short, No Load)
Load Transient Response
V
V
V
V
2.5A/μs STEP
C
C1 = NONE, C3 = NONE FROM FIGURE 18
IN
OUT
IN
OUT
OUT
FB
= 5V
= 5V
vs Temperature
= 2.5V
= 1.5V
= 100μF X5R
–25
V
V
I
OUT
IN
OUT
TEMPERATURE (°C)
0
50μs/DIV
20μs/DIV
25
V
50
IN
V
IN
= 2.375V
V
= 5.5V
IN
75
= 3.3V
per Figure 18 Typcial Application
4608 G17
4608 G11
4608 G14
100
20mV/DIV
2A/DIV
5V/DIV
5V/DIV
5A/DIV
5A/DIV
–0.5
–0.1
–0.2
–0.3
–0.4
0.5
0.4
0.3
0.2
0.1
0
0
Load Transient Response
Load Regulation vs Current
Short-Circuit Protection
(2.5V Short, 4A Load)
V
V
2.5A/μs STEP
C
C1 = 100pF , C3 = NONE FROM FIGURE 18
V
V
IN
OUT
OUT
FC MODE
V
V
IN
OUT
IN
OUT
= 5V
= 5V
V
V
1
= 3.3V
IN
OUT
= 1.2V
= 2 × 100μF
= 2.5V
= 1.8V
2
LOAD CURRENT (A)
3
20μs/DIV
50μs/DIV
4
5
I
OUT
I
6
OUT
SHORT
LOAD
7
4608 G18
4608 G12
4608 G15
4608f
8