MAX8790(2006) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8790
(Rev.:2006)
(Rev.:2006)
Maxim Integrated
MAX8790 Datasheet PDF : 24 Pages
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Six-String White LED Driver with Active
Current Balancing for LCD Panel Applications
IN
5V LINEAR
REGULATOR
OUTPUT OVERVOLTAGE
COMPARATOR
1.25V
ERROR
OV
COMPARATOR
VCC
OSC
SHDN
CCV
VCC
OSCILLATOR
TRI-LEVEL
COMPARATOR
CLOCK
CONTROL AND
DRIVER LOGIC
EXT
SLOPE
COMPENSATION
CURRENT SENSE
CS
FB OVERVOLTAGE
COMPARATOR
VCC + 0.6V
65ms TIMER
SHUTDOWN
HVC
FB6
LATCH
FB5
ERROR
AMPLIFIER
gm
FB4
LVC
FB3
FB2
ISET
REF ADJ
REF
SAT
FB1
FSET
OSC
CLK
256 x fBRT
VCC - 0.4V
8-BIT DAC
8
DIGITAL CONTROL
EN
N
10Ω
CURRENT SOURCE
GND
CPLL
PLL
BRT
ENA
8-BIT
8
COUNTER
8
8-BIT
LATCH
5 MSBs
5 LSBs
DIGITAL
COMPARATOR
CURRENT SOURCE
FB2
CURRENT SOURCE
FB3
CURRENT SOURCE
FB4
CURRENT SOURCE
FB5
CURRENT SOURCE
FB6
Figure 2. Control Circuit Block Diagram
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