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LTC3869 Datasheet(PDF) 47 Page - Linear Technology

Part # LTC3869
Description  Fast, Accurate, 2-Phase, Single-Output Step-Down DC/DC Controller
PDF  50 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3869 Datasheet(HTML) 47 Page - Linear Technology

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LTC3839
47
3839fa
TYPICAL APPLICATIONS
Figure 20. 4.5V to 14V Input, 3.3V/25A Output, 2MHz, RSENSE, Step-Down Converter
3839 F20a
1nF
0.1μF
L2
0.3μH
DB2
MT2
MB2
LTC3839
2.2Ω
2.2Ω
45.3k
100k
33.2k
18.7k
VIN
1μF
1nF
4.7μF
0.1μF
0.01μF
150pF
L1
0.3μH
RS1
0.004Ω
RS2
0.004Ω
COUT1
100μF
6
VOUT
3.3V
25A
VIN
4.5V TO 14V
10k
SENSE1–
SENSE1+
BOOST1
TG1
SW1
SENSE2+
BOOST2
TG2
SW2
DRVCC1
INTVCC
DRVCC2
EXTVCC
DB1
SENSE2–
BG1
BG2
PGND
VOUTSENSE
+
VOUTSENSE
–
PGOOD
TRACK/SS
ITH
DTR
VRNG
SGND
RT
PGOOD
MB1
MT1
1μF
CIN2
22μF
4
CIN1
180μF
+
10Ω
10Ω
10Ω
10Ω
CIN1: SANYO 16SVP180MX
CIN2: MURATA GRM32ER61C226KE20L
COUT1, COUT2: MURATA GRM31CR60J107ME39L
DB1, DB2: CENTRAL CMDSH-3
L1, L2: WÜRTH 7443340030
MT1, MT2: INFINEON BSC050NE2LS
MB1, MB2: INFINEON BSC032NE2LS
PHASMD
MODE/PLLIN
CLKOUT
RUN
LOAD CURRENT (A)
0.1
80
90
100
1
10
100
3839 F20b
70
60
50
6
10
8
4
2
0
VIN = 12V
FORCED
CONTINUOUS
MODE
DISCONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED
CM
LOAD CURRENT (A)
0.1
80
90
100
1
10
100
3839 F20c
70
60
50
6
10
8
4
2
0
VIN = 5V
FORCED
CONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED CM
DISCONTINUOUS
MODE



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