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LTC3869 Datasheet(PDF) 46 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) 46 Page - Linear Technology

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LTC3839
46
3839fa
TYPICAL APPLICATIONS
Figure 19. 6.5V to 34V Input, 5V/25A Output, 300kHz, RSENSE, 5V Output Tied to EXTVCC, Step-Down Converter
LOAD CURRENT (A)
0.1
80
90
100
1
10
100
3839 F19c
70
60
6
8
4
2
0
VIN = 28V
FORCED
CONTINUOUS
MODE
DISCONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED CM
LOAD CURRENT (A)
0.1
80
90
100
1
10
100
3839 F19b
70
60
6
8
4
2
0
VIN = 12V
FORCED
CONTINUOUS
MODE
DISCONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED CM
3839 F19a
1nF
0.1μF
L2
2.2μH
COUT4
100μF
COUT3
150μF
2
DB2
VOUT
MT2
MB2
+
LTC3839
2.2Ω
2.2Ω
73.2k
100k
137k
470pF
22pF
27.4k
VIN
1μF
1nF
4.7μF
0.1μF
0.01μF
L1
2.2μH
RS1
0.002Ω
RS2
0.002Ω
COUT2
150μF
2
COUT1
100μF
VOUT
5V
25A
VIN
6.5V TO 34V
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
10μF
3
+
CIN1
56μF
3
+
20Ω
20Ω
20Ω
20Ω
CIN1: SUNCON 50HVH56M
CIN2: MURATA GRM32ER71H106KA12L
COUT1, COUT4: MURATA GRM31CR60J107ME39L
COUT2, COUT3: SANYO 6TPE150MIC2
DB1, DB2: ZETEX ZLLS1000
L1, L2: WÜRTH 7443320220
MT1, MT2: INFINEON BSC093N04LSG
MB1, MB2: INFINEON BSC035N04LSG
PHASMD
MODE/PLLIN
CLKOUT
RUN



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