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LT3748 Datasheet(PDF) 7 Page - Linear Technology

Part # LT3748
Description  100V Isolated Flyback Controller
PDF  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3748 Datasheet(HTML) 7 Page - Linear Technology

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background image
LT3748
7
3748fa
BLOCK DIAGRAM
MASTER
LATCH
BOUNDARY
MODE DETECT
VARIABLE
DELAY TIMER
INTVCC
CBIAS
R1
R2
CSS
RTC
VOUT
+
VOUT
–
VIN
TC
SS
VIN
SENSE
VC
T1
NPS:1
5μA
20μA
COUT
DOUT
CIN
LPRI
LSEC
RFB
RREF
RSENSE
RC
CC
+
–
INTERNAL
REFERENCE
AND
REGULATORS
CURRENT
LIMIT
50μs MAX
ON TIMER
50μs MAX
OFF TIMER
TC
CURRENT
R
Q
S
R
S
A1
ERROR AMP
100mV
+
–
+
–
A3
+
–
+
–
–
A4
A4
A2
2.4μA
GND
8, 9
3748 BD
Q2
Q1
1.223V
1.223V
1.223V
EN/UVLO
RFB
RREF
GATE
NMOS
gm
6.04k
11
7
6
5
16
1
12
14
3
10



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