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LTC3880 Datasheet(PDF) 43 Page - Linear Technology

Part # LTC3880
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

LTC3880 Datasheet(HTML) 43 Page - Linear Technology

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LTC3839
43
3839fa
TYPICAL APPLICATIONS
Figure 16. 4.5V to 38V Input, 1.2V/30A Output, 350kHz, DCR Sense, Step-Down Converter
3839 F16a
0.1μF
0.1μF
L2
0.56μH
COUT3
100μF
2
COUT4
330μF
2
15k
DB2
MT2
MB2
3.57k
+
LTC3839
2.2Ω
2.2Ω
10k
100k
40.2k
115k
VIN
1μF
0.1μF
4.7μF
0.1μF
0.01μF
22pF
220pF
L1
0.56μH
COUT2
330μF
2
COUT1
100μF
2
VOUT
1.2V
30A
VIN
4.5V TO 38V
15k
10k
SENSE1–
SENSE1+
BOOST1
TG1
SW1
SENSE2+
BOOST2
TG2
SW2
DRVCC1
INTVCC
DRVCC2
EXTVCC
DB1
MT1
3.57k
SENSE2–
BG1
BG2
PGND
VOUTSENSE
+
VOUTSENSE
–
PGOOD
TRACK/SS
ITH
DTR
VRNG
PHASMD
MODE/PLLIN
CLKOUT
RUN
SGND
RT
PGOOD
MB1
1μF
CIN2
10μF
3
+
CIN1
100μF
+
CIN1: NICHICON UCJ1H101MCL165
CIN2: MURATA GRM32ER71H106K
COUT2, COUT4: SANYO 2R5TPE330M9
COUT1, COUT3: MURATA GRM31CR60J107ME39L
DB1, DB2: DIODES INC. SDM10K45
L1, L2: TOKO FDA1055-R56M
MT1, MT2: INFINEON BSC093N04LSG
MB1, MB2: INFINEON BSC035N04LSG
LOAD CURRENT (A)
0.1
80
90
100
110
100
3839 F16b
70
60
50
0
3
4
5
2
1
VIN = 12V
FORCED
CONTINUOUS MODE
DISCONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED CM
LOAD CURRENT (A)
0.1
80
90
100
110
100
3839 F16c
70
60
50
0
3
4
5
2
1
VIN = 5V
FORCED
CONTINUOUS
MODE
DISCONTINUOUS
MODE
LOSS
DCM
LOSS
FORCED
CM



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