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LTC7130 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC7130
Description  20V 20A Monolithic Buck Converter with Ultralow DCR Sensing
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC7130 Datasheet(HTML) 5 Page - Linear Technology

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LTC7130
5
7130fb
For more information www.linear.com/LTC7130
Load Step
(Burst Mode® Operation)
Inductor Current at Light Load
Load Step
(Continuous Conduction Mode)
Prebiased Output at 1V
Load Step
(Pulse-Skipping Mode)
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
Efficiency vs Load Current
and Mode
Efficiency vs Load Current
and Mode
Efficiency vs Load Current
and Mode
Efficiency and Power Loss
vs Load Current
VIN = 20V
EFFICIENCY
POWER LOSS
VOUT = 1.5V
LOAD CURRENT (A)
0
3
6
9
11
14
17
20
0
10
20
30
40
50
60
70
80
90
100
0
5
10
15
vs Load Current
7130 G04
(Burst Mode Operation)
VIN = 12V
VOUT = 1.5V
FRONT PAGE CIRCUIT
20µs/DIV
ILOAD
5A/DIV
1A to 15A
VOUT
AC–COUPLED
100mV/DIV
7130 G05
VIN = 12V
VOUT = 1.5V
FRONT PAGE CIRCUIT
20µs/DIV
VOUT
AC–COUPLED
100mV/DIV
ILOAD
5A/DIV
1A to 15A
7130 G06
VIN = 12V
VOUT = 1.5V
FRONT PAGE CIRCUIT
20µs/DIV
ILOAD
5A/DIV
1A TO 15A
VOUT
AC–COUPLED
100mV/DIV
7130 G07
VIN = 12V
VOUT = 1.5V
LOAD = 300mA
10µs/DIV
PULSE–SKIP
MODE
10A/DIV
Burst Mode
OPERATION
10A/DIV
CONTINUOUS
CONDUCTION
MODE 10A/DIV
7130 G08
VIN = 12V
VOUT = 1.5V
TRACK/SS 500mV/DIV
20ms/DIV
VFB
500mV/DIV
VOUT
500mV/DIV
7130 G09
0.1
1
10
100
0
10
20
30
40
50
60
70
80
90
100
fSW = 500kHz
OUT
L = 0.25H (DCR = 0.37mΩ)
FRONT PAGE CIRCUIT
CCM
Burst Mode OPERATION
PULSE–SKIPPING MODE
V
= 1.5V
3681 G01
VIN = 5V
LOAD CURRENT (A)
0.1
1
10
100
0
10
20
30
40
50
60
70
80
90
100
fSW = 500kHz
OUT
L = 0.25H (DCR = 0.37mΩ)
FRONT PAGE CIRCUIT
CCM
Burst Mode OPERATION
PULSE–SKIPPING MODE
V
= 1.5V
3681 G02
VIN = 12V
LOAD CURRENT (A)
0.1
1
10
100
0
10
20
30
40
50
60
70
80
90
100
fSW = 400kHz
OUT
L = 0.25H (DCR = 0.37mΩ)
FRONT PAGE CIRCUIT
EXTVCC = 5V
CCM
Burst Mode OPERATION
PULSE–SKIPPING MODE
V
= 1V
3681 G03
VIN = 12V
LOAD CURRENT (A)



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