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LTM4608 Datasheet(PDF) 5 Page - Linear Technology

Part # LTM4608
Description  Low VIN, 8A DC/DC 關ModuleTM with Tracking, Margining, and Frequency Synchronization
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM4608 Datasheet(HTML) 5 Page - Linear Technology

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LTM4608
5
4608f
VIN (V)
0
1.5
2.0
2.5
3
5
4608 G06
1.0
0.5
0
12
4
3.0
3.5
4.0
6
VOUT = 1.2V
VOUT = 1.5V
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
IOUT = 5A
VIN (V)
0
1.5
2.0
2.5
3
5
4608 G05
1.0
0.5
0
12
4
3.0
3.5
4.0
6
VOUT = 1.2V
VOUT = 1.5V
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
IOUT = 8A
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
Burst Mode Efficiency with
5V Input
VIN to VOUT Step-Down Ratio
Supply Current vs VIN
Load Transient Response
Load Transient Response
Efficiency vs Load Current
Efficiency vs Load Current
LOAD CURRENT
0
70
75
80
85
90
95
100
24
6
8
4608 G01
5VIN 1.2VOUT
5VIN 1.5VOUT
5VIN 1.8VOUT
5VIN 2.5VOUT
5VIN 3.3VOUT
CONTINUOUS MODE
LOAD CURRENT
0
70
75
80
85
90
95
100
2468
4608 G02
3.3VIN 1.2VOUT
3.3VIN 1.5VOUT
3.3VIN 1.8VOUT
3.3VIN 2.5VOUT
CONTINUOUS MODE
LOAD CURRENT (A)
0
90
95
100
2
4
5
4608 G03
80
70
85
75
1
3
6
7
2.5VIN 1.0VOUT
2.5VIN 1.5VOUT
2.5VIN 1.8VOUT
CONTINUOUS MODE
VIN to VOUT Step-Down Ratio
LOAD CURRENT (A)
40
60
80
100
50
70
90
0.2
0.4
0.6
0.8
4608 G04
1.1
1.0
0.1
0
0.3
0.5
0.7
0.9
VOUT = 1.5V
VOUT = 2.5V
VOUT = 3.3V
INPUT VOLTAGE (V)
2.5
4.5
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
4608 G07
3.5
3
5
4
5.5
VO = 1.2V PULSE-SKIPPING MODE
VO = 1.2V BURST MODE
1A/DIV
20mV/DIV
20μs/DIV
VIN = 5V
VOUT = 3.3V
2A/μs STEP
COUT = 100μF X5R
C1 = 100pF, C3 = 22pF FROM FIGURE 18
4608 G08
per Figure 18 Typcial Application
2A/DIV
20mV/DIV
20μs/DIV
VIN = 5V
VOUT = 2.5V
2.5A/μs STEP
COUT = 100μF X5R
C1 = 120pF, C3 = 47pF FROM FIGURE 18
4608 G09



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