LT3825EFE-PBF LINER [Linear Technology], LT3825EFE-PBF Datasheet - Page 8

• Manufacturer Part Number: LT3825EFE-PBF
• Description: Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range
• Manufacturer: LINER [Linear Technology]

BLOCK DIAGRAM
LT3825
8
10
15
2
7
5
3
4
15.3V
V
UVLO
OSC
SYNC
t
PGDLY
ENDLY
ON
CC
+
–
OSCILLATOR
V
CC
UVLO
REFERENCE
1.235V
(V
I
UVLO
FB
)
19.5V
+
–
SET
TSD
UVLO
+
–
REGULATOR
INTERNAL
BLOCK
LOGIC
CURRENT TRIP
SLOPE COMPENSATION
ENABLE
PGATE
SGATE
3V
0.7
1.3
CLAMPS
S
R
COMPARATOR
–
+
CURRENT
Q
Q
COLLAPSE DETECT
TO FB
ERROR AMP
–
+
–
+
+
–
GATE DRIVE
GATE DRIVE
1V
+
R
50k
CMPF
3V
OVERCURRENT
FAULT
–
V
V
CC
CC
–
+
–
CURRENT
SENSE AMP
LOAD
COMPENSATION
+
SENSE
SENSE
R
C
SFST
GND
CMP
CMP
PG
SG
FB
V
C
–
+
11
12
13
14
16
17
3525fa
8
9
6
1