Rainbow Electronics MAX8728 - Manual (Page 16)

MAX8728
Low-Cost, Multiple-Output
Power Supply for LCD Monitors/TVs
16 ______________________________________________________________________________________
V L
IN
BST
GATE INL LX2
GND2
FB2
COMP
LX1
GND1
OUT1
FB1
SHDN
EN
DEL
REF
GND
FBN
FSEL
DRVN
SUPP
CTL
THR
MODE
DRN
GON
SRC
FBP
DRVP
V
IN
OUT1
V CC V L
V L
V GOFF
AV DD
V GON
FROM TCON
ON/OFF
LCD ENABLE
IN
STEP-DOWN
REGULATOR
SEQUENCE
CONTROL
V L
REGULATOR
STEP-UP
REGULATOR
THERMAL
SHUTDOWN
OSCILLATOR
FAULT
LOGIC AND
TIMER
REFERENCE
NEGATIVE
REGULATOR
SWITCH
CONTROL
BLOCK
POSITIVE
REGULATOR
MAX8728
VIN
Figure 2. Functional Diagram