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LT3757 Datasheet(PDF) 32 Page - Linear Technology

Part # LT3757
Description  Boost, Flyback, SEPIC and Inverting Controller
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3757 Datasheet(HTML) 32 Page - Linear Technology

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LT3757

3757fb
Typical applicaTions
5V to 12V Input, ±12V/0.2A Output SEPIC Converter
Nonisolated Inverting SLIC Supply
SENSE
LT3757
VIN
VIN
5V TO 12V
CIN1
1µF
16V, X5R
CIN2
47µF
16V
CDC1
4.7µF
16V, X5R
CDC2
4.7µF
16V
X5R
COUT2
4.7µF
16V, X5R
3
VOUT1
12V
0.4A
VOUT2
–12V
0.4A
COUT2
4.7µF
16V, X5R
3
CVCC
4.7µF
10V
X5R
0.02
M1
30.9k
400kHz
D1, D2: MBRS140T3
T1: COILTRONICS VP1-0076 (*PRIMARY = 4 WINDINGS IN PARALLEL)
M1: SILICONIX/VISHAY Si4840BDY
GATE
FBX
GND INTVCC
SHDN/UVLO
SYNC
RT
SS
VC
•
+
105k
46.4k
0.1µF
100pF
22k
6.8nF
T1
1,2,3,4
D1
GND
1.05k
1%
158
1%
D2
5
6
•
3757 TA06
SENSE
LT3757
VIN
VIN
5V TO 16V
CIN
22µF
25V, X5R
2
C2
10µF
50V
X5R
D1
DFLS160
CVCC
4.7µF
10V, X5R
C3
22µF
25V
X5R
C4
22µF
25V
X5R
COUT
3.3µF
100V
GND
C5
22µF
25V
X5R
VOUT1
–24V
200mA
VOUT1
–72V
200mA
0.012
0.5W
M1
Si7850DP
63.4k
200kHz
GATE
FBX
GND INTVCC
SHDN/UVLO
SYNC
RT
SS
VC
•
•
•
•
R2
105k
R1
46.4k
0.1µF
100pF
15.8k
464k
9.1k
10nF
T1
1,2,3
4
D2
DFLS160
5
D3
DFLS160
6
VP5-0155 (PRIMARY = 3 WINDINGS IN PARALLEL)
3757 TA07



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