LTM4618(RevA) 데이터 시트보기 (PDF) - Linear Technology
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LTM4618
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LTM4618 Datasheet PDF : 24 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTM4618
Efficiency vs Load Current with
5VIN (CCM)
100
Efficiency vs Load Current with
12VIN (CCM)
100
Efficiency vs Load Current with
24VIN (CCM)
95
95
95
90
90
85
80
5V TO 0.8VOUT
5V TO 1.2VOUT
75
5V TO 1.5VOUT
5V TO 2.5VOUT
5V TO 3.3VOUT
70
0
1
2
3
4
5
6
LOAD CURRENT (A)
4618 G01
90
85
80
12V TO 1.2VOUT
12V TO 1.5VOUT
75
12V TO 2.5VOUT
12V TO 3.3VOUT
12V TO 5VOUT
70
0
1
2
3
4
5
6
LOAD CURRENT (A)
4618 G02
85
80
75
24V TO 2.5VOUT
24V TO 3.3VOUT
24V TO 5VOUT
70
0
1
2
3
4
5
6
LOAD CURRENT (A)
4618 G03
Efficiency vs Load Current with
Different Mode Settings
(12V to 3.3V)
100
VIN = 12V
90 VOUT = 3.3V
80
70
60
50
40
30
20
10
0
0.01
BURST
PULSE SKIP
CCM
0.1
LOAD CURRENT (A)
1
4618 G04
1.2V Transient Response
1.5V Transient Response
IOUT
1A/DIV
IOUT
1A/DIV
VOUT
50mV/DIV
VOUT
50mV/DIV
50μs/DIV
4618 G05
VIN = 12V AND VOUT = 1.2V AT 3A/μs LOAD STEP
COUT = 2= 22μF 6.3V CERAMIC CAPACITOR
1= 100μF 6.3V CERAMIC CAPACITOR
1= 220μF SANYO POSCAP
50μs/DIV
4618 G06
VIN = 12V AND VOUT = 1.5V AT 3A/μs LOAD STEP
COUT = 2= 22μF 6.3V CERAMIC CAPACITOR
1= 100μF 6.3V CERAMIC CAPACITOR
1= 220μF SANYO POSCAP
2.5V Transient Response
3.3V Transient Response
5V Transient Response
IOUT
1A/DIV
IOUT
1A/DIV
IOUT
1A/DIV
VOUT
50mV/DIV
VOUT
50mV/DIV
VOUT
100mV/DIV
50μs/DIV
4618 G07
VIN = 12V AND VOUT = 2.5V AT 3A/μs LOAD STEP
COUT = 2= 22μF 6.3V CERAMIC CAPACITOR
1= 100μF 6.3V CERAMIC CAPACITOR
1= 220μF SANYO POSCAP
50μs/DIV
4618 G08
VIN = 12V AND VOUT = 3.3V AT 3A/μs LOAD STEP
COUT = 2= 22μF 6.3V CERAMIC CAPACITOR
1= 100μF 6.3V CERAMIC CAPACITOR
1= 220μF SANYO POSCAP
50μs/DIV
4618 G09
VIN = 12V AND VOUT = 5V AT 3A/μs LOAD STEP
COUT = 2= 22μF 6.3V CERAMIC CAPACITOR
1= 100μF 6.3V CERAMIC CAPACITOR
1= 220μF SANYO POSCAP
4618fa
5
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