MAX8722 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX8722 Datasheet PDF : 20 Pages
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Low-Cost CCFL Backlight Controller
BATT
GND
VCC
VFB
COMP
OVERVOLTAGE
COMPARATOR
2.3V
LINEAR
REGULATOR
BIAS
SUPPLY
EN
RAMP
4.2V
UVLO
COMPARATOR
FLT
UVLO
MAX8722
OVER-
CURRENT
100µA
400µA
PWM
COMPARATOR
PWM CONTROL
LOGIC
GATE-DRIVER
CONTROL
STATE
MACHINE
IFB
FREQ
DPWM
SYNC
CNTL
ISEC
TFLT
F.W. RECT
800mV
DPWM OSCILLATOR
AND DIMMING
CONTROL LOGIC
ERROR
AMPLIFIER
600mV
H.W. RECT
OPEN-LAMP
COMPARATOR
OVER-
CURRENT
FAULT DELAY
BLOCK
1.25V
SECONDARY
OVERCURRENT
COMPARATOR
PRIMARY
OVERCURRENT
AND ZERO-
CROSSING
MUX
FAULT
LATCH
S
SHDN
Q
FLT
UVLO
RESET
R
Figure 2. MAX8722 Functional Diagram
SHDN
BST1
GH1
LX1
BST2
GH2
LX2
VDD
GL1
PGND
GL2
ILIM
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