 English |
|
|
|
|
|
|
|
| LTM4608A Datasheet, PDF (5/24 Pages) Linear Technology – Low VIN, 8A DC/DC μModule with Tracking, Margining, and Frequency Synchronization | |||
| |||
| ◁ |
TYPICAL PERFORMANCE CHARACTERISTICS
LTM4608A
Efï¬ciency vs Load Current
100
CONTINUOUS MODE
95
Efï¬ciency vs Load Current
100
CONTINUOUS MODE
95
Efï¬ciency vs Load Current
100
CONTINUOUS MODE
95
90
90
90
85
85
85
80
75
70
0
5VIN 1.2VOUT
5VIN 1.5VOUT
5VIN 1.8VOUT
5VIN 2.5VOUT
5VIN 3.3VOUT
2
4
6
LOAD CURRENT
8
4608A G01
80
75
70
0
3.3VIN 1.2VOUT
3.3VIN 1.5VOUT
3.3VIN 1.8VOUT
3.3VIN 2.5VOUT
2
4
6
LOAD CURRENT
8
4608A G02
80
75
70
01
2.7VIN 1.0VOUT
2.7VIN 1.5VOUT
2.7VIN 1.8VOUT
2 34 5
LOAD CURRENT (A)
67
4608A G03
Burst Mode Efï¬ciency with
5V Input
100
90
80
70
60
50
VOUT = 1.5V
VOUT = 2.5V
VOUT = 3.3V
40
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
LOAD CURRENT (A)
4608A G04
VIN to VOUT Step-Down Ratio
4.0
IOUT = 8A
3.5
VOUT = 1.2V
VOUT = 1.5V
3.0
VOUT = 1.8V
VOUT = 2.5V
2.5
VOUT = 3.3V
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
6
VIN (V)
4608A G05
VIN to VOUT Step-Down Ratio
4.0
IOUT = 5A
3.5
VOUT = 1.2V
VOUT = 1.5V
3.0
VOUT = 1.8V
VOUT = 2.5V
2.5
VOUT = 3.3V
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
6
VIN (V)
4608A G06
Supply Current vs VIN
1.6
Load Transient Response
Load Transient Response
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2.5
VO = 1.2V PULSE-SKIPPING MODE
VO = 1.2V BURST MODE
ILOAD
1A/DIV
VIN
2V/DIV
VOUT
20mV/DIV
AC COUPLED
ILOAD
2A/DIV
VOUT
20mV/DIV
AC COUPLED
3 3.5 4 4.5
INPUT VOLTAGE (V)
5 5.5
4608A G07
VIN = 5V
20μs/DIV
VOUT = 3.3V, RFB = 2.21k
2A/μs STEP
4608A G08
COUT = 100μF X5R
C1 = 100pF, C3 = 22pF FROM FIGURE 18
VIN = 5V
20μs/DIV
VOUT = 2.5V, RFB = 3.09k
2.5A/μs STEP
4608A G09
COUT = 100μF X5R
C1 = 120pF, C3 = 47pF FROM FIGURE 18
4608afa
5
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese