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| LT1425 Datasheet, PDF (6/20 Pages) Linear Technology – Isolated Flyback Switching Regulator | |||
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LT1425
BLOCK DIAGRAM
SHDN
SYNC
VIN
2.6V
REGULATOR
285kHz
OSCILLATOR
LOGIC
RREF
FLYBACK
ERROR
AMPLIFIER
DRIVER
RFB
VSW
COMP
RCCOMP
LOAD
COMPENSATION
ROC0MP
SGND
VC
GND IS OMITTED FOR CLARITY
CURRENT
AMPLIFIER
RSENSE
PGND
1425 BD
W
W
FLYBACK ERROR A PLIFIER DIAGRA
D1
VIN
T1
â¢
+
C1
VSW
â¢
VIN
RFB
D2
RFB
Q4
IM
IFXD
VC
Q1
Q2 Q3
VBG
RREF
I
IM
RREF
+
ISOLATED
VOUT
â
ENABLE
CEXT
1425 EA
6
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