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LTC3370EUH Fiches technique(PDF) 7 Page - Linear Technology

No de pièce LTC3370EUH
Description  4-Channel 8A Configurable Buck DC/DCs
PDF  10 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTC3370EUH Fiches technique(HTML) 7 Page - Linear Technology

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dc2311af
DEMO MANUAL DC2311A
application information
The DC2311A can be used to evaluate each of the eight
configurations of the LTC3370 from 1MHz to 3MHz. The
following efficiency graphs and transient response plots
illustrate how a 1.8V, 1A regulator performs compared
to a 1.8V, 4A regulator. Please refer to the LTC3370 data
sheet for more performance information for the LTC3370.
1A Buck Efficiency vs ILOAD
4A Buck Efficiency vs ILOAD
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
3370 G23
0
1
100
1000
10
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN = 2.25V
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 3.3V
VIN = 5.5V
FORCED
CONTINUOUS MODE
BURST
MODE
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
3370 G33
0
1
100
1000
10
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN = 2.25V
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 3.3V
VIN = 5.5V
BURST MODE
FORCED
CONTINUOUS
MODE
1A Buck Regulator, Transient
Response (Burst Mode Operation)
1A Buck Regulator, Transient
Response (Forced Continuous Mode)
50µs/DIV
VOUT
100mV/DIV
AC-COUPLED
INDUCTOR
CURRENT
200mA/DIV
0mA
3370 G46
LOAD STEP = 100mA TO 700mA
VIN = 3.3V
VOUT = 1.8V
50µs/DIV
VOUT
100mV/DIV
AC-COUPLED
INDUCTOR
CURRENT
200mA/DIV
0mA
3370 G47
LOAD STEP = 100mA TO 700mA
VIN = 3.3V
VOUT = 1.8V
4A Buck Regulator, Transient
Response (Burst Mode Operation)
4A Buck Regulator, Transient
Response (Forced Continuous Mode)
50µs/DIV
VOUT
100mV/DIV
AC-COUPLED
INDUCTOR
CURRENT
1A/DIV
0mA
3370 G48
LOAD STEP = 400mA TO 2.8A
VIN = 3.3V
VOUT = 1.8V
50µs/DIV
VOUT
100mV/DIV
AC-COUPLED
INDUCTOR
CURRENT
1A/DIV
0mA
3370 G49
LOAD STEP = 400mA TO 2.8A
VIN = 3.3V
VOUT = 1.8V



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