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LTC4264 Datasheet(PDF) 12 Page - Linear Technology

Part # LTC4264
Description  Synchronous No-Opto Flyback Controller
PDF  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4264 Datasheet(HTML) 12 Page - Linear Technology

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background image
LTC4278
12
4278fc
BLOCK DIAGRAM
19
SENSE–
20
SENSE+
CCMP
3V
TO FB
PGATE
SGATE
CURRENT
SENSE AMP
RCMPF
50k
LOAD
COMPENSATION
–
+
–
+
–
+
UVLO
0.8V
DISABLE
IUVLO
18
OSC
15
tON
11
PGDLY
23
ENDLY
NC
12
SYNC
13
1.237V
REFERENCE
(VFB)
INTERNAL
REGULATOR
UVLO
3V
COLLAPSE DETECT
ERROR AMP
CLAMPS
0.7
1.3
+
–
S
R
Q
Q
1V
16
FB
17
VCMP
14
SFST
TSD
CURRENT TRIP
SLOPE COMPENSATION
CURRENT
COMPARATOR
OVERCURRENT
FAULT
LOGIC
BLOCK
–
+
21
RCMP
GATE DRIVE
22
PG
24
SG
9
GND
(EXPOSED PAD)
33
OSCILLATOR
SET
ENABLE
GATE DRIVE
BOLD LINE INDICATES
HIGH CURRENT PATH
14V
32
T2P
2
RCLASS
3
NC
4
SHDN
PWRGD
VPORTP
31
NC
1
30
PWRGD
29
25
NC
28
VNEG
VNEG
26
CONTROL
CIRCUITS
CLASSIFICATION
CURRENT LOAD
1.237V
–
+
16k
25k
7
VPORTN
NC
8 NC
10
VCC
6
27
4278 BD
VPORTN
5



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