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LTC3370 数据表(PDF) 40 Page - Linear Technology

部件名 LTC3370
功能描述  60V Low IQ Buck Controller Plus 4-Channel 8A Configurable Buck DC/DCs
PDF  44 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3370 数据表(HTML) 40 Page - Linear Technology

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LTC3372
40
Rev. A
For more information www.analog.com
TYPICAL APPLICATIONS
4.5V (3V Minimum After Start-Up) to 50V Input HV SEPIC Converter Feeding Dual 3.3V/4A LV Regulators
VOUT
INTVCC
VOUT
INTVCC
INTVCC
INTVCC
INTVCC
M1
DIN
4.7µF
10nF
255k
47µF
×2
162k
511k
47µF
×2
0.01µF
100pF
6.8nF
4.32k
100k
CIN2
10µF
CIN1
47µF
×2
100k
3372 TA05a
L2
0.33µH
L1
0.33µH
10µF
×4
100
1nF
VINB
SWA
GND
SWB
FB1
VINA
EN1
VIN
VOUTPRG
VINC
VIND
SWC
ITH
SWD
FB2
EN2
TRACK/SS
RUN
PGOOD
RT
CT
PLL/MODE
VINE
VINF
SWE
SWF
FB3
EN3
VING
VINH
SWG
SWH
C1 C2 C3
FB4
EN4
WDI
WDO
TEMP
RSTB
INTVCC
TG
BOOST
SW
BG
SENSE+
SENSE–
VOUT/EXTVCC
LTC3372
LHV1
1.2µH
LHV2
1.2µH
CP
10µF
RSENSE
2m
100
DFW
1µF
COUT1
680µF
×2
COUT2
220µF
VOUT1
3.3V
4A
VOUT4
3.3V
4A
VOUT
5V
VIN
4.5V MIN
50V MAX
(3V MIN
AFTER START-UP)
M1: TPH7R006PL
LHV1, LHV2: 74485540120
CIN1: 63HVH47M
CIN2: GRM32ER71H106KA12L
COUT1: TPSE687M006R0045
COUT2: GRM32ER60J227ME05L
CP: GRM32ER71H106KA12L
DIN: DFLS1100
10µF
×4
162k
511k
BURST EFFICIENCY
BURST LOSS
PULSE–SKIPPING
EFFICIENCY
PULSE–SKIPPING
LOSS
OUTPUT CURRENT (A)
0.0001
0.001
0.01
0.1
1
6
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1000
10000
3372 TA05b
VOUT = 5V
ILOAD = 4.8A
12V
3V
200ms/DIV
VOUT
AC–COUPLED
200mV/DIV
VIN
5V/DIV
3372 TA05c
HV Controller Efficiency and
Power Loss vs Output Current
HV Controller VIN Step Response



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