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| LT3757MPMSE Datasheet, PDF (30/36 Pages) Linear Technology – Boost, Flyback, SEPIC and Inverting Controller | |||
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LT3757/LT3757A
Typical Applications
High Voltage Flyback Power Supply
VIN
5V TO 12V
DANGER! HIGH VOLTAGE OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
CIN
47µF
16V
Ã4
105k
SHDN/UVLO
VIN
46.4k
INTVCC
SYNC
LT3757
GATE
CVCC
47µF
25V
X5R
T1
1:10
D1
â¢
â¢
22Ω
220pF
VSW
M1
140k
100kHz
RT
SS
SENSE
VC
GND
FBX
0.1µF
100pF
6.8k
22nF
22Ω
10nF
0.02Ω
CIN: MURATA GRM32ER61C476K
COUT: TDK C3225X7R2J683K
D1: VISHAY SILICONIX GSD2004S DUAL DIODE CONNECTED IN SERIES
M1: VISHAY SILICONIX Si7850DP
T1: TDK DCT15EFD-U44S003
1.50M
1%
1M
1%
1M
1%
16.2k
1%
3757 TA05a
VOUT
350V
10mA
COUT
68nF
Ã2
Start-Up Waveforms
VOUT
100V/DIV
2ms/DIV
3757 TA05b
VOUT
5V/DIV
(AC)
Switching Waveforms
VSW
20V/DIV
5µs/DIV
3757 TA05c
3757afd
30
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