參數(shù)資料
型號: DS3994
廠商: Maxim Integrated Products, Inc.
英文描述: 4-Channel Cold-Cathode Fluorescent Lamp Controller
中文描述: 4通道冷陰極熒光燈控制器
文件頁數(shù): 8/28頁
文件大?。?/td> 557K
代理商: DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
8
_____________________________________________________________________
Functional Diagram
I
2
C-
COMPATIBLE
INTERFACE
3-BYTE USER MEMORY
EEPROM
SYSTEM
ENABLE/POR
FOUR
INDEPENDENT
CCFL
CONTROLLERS
CHANNEL FAULT
CHANNEL ENABLE
[20kHz
TO 80kHz]
4-PHASE
GENERATOR
x512
PLL
0
1
1
0
0
1
MUX
RGSO BIT
AT CR1.4
RAMP
GENERATOR
MUX
POSCS BIT
AT CR1.1
MUX
DPSS BIT
AT CR1.3
DPWM
SIGNAL
GND
GBn
GAn
MOSFET
GATE
DRIVERS
OVDn
OVERVOLTAGE
DETECTION
LCMn
LAMP CURRENT
MONITOR
FAULT
HANDLING
20kHz TO 80kHz
SDA
SCL
A0
I
2
C DEVICE
CONFIGURATION
PORT
LAMP FREQUENCY
INPUT/OUTPUT
EXTERNAL RESISTOR
LAMP FREQUENCY SET
DPWM SIGNAL
INPUT/OUTPUT
ANALOG BRIGHTNESS
CONTROL
EXTERNAL RESISTOR
DPWM FREQUENCY SET/
DPWM CLOCK INPUT
FAULT
LSYNC
LOSC
PSYNC
BRIGHT
POSC
[10.24MHz TO 40.96MHz]
22.5Hz TO 440Hz
20kHz TO 80kHz
OSCILLATOR (
±
2%)
22.5Hz TO 440Hz
OSCILLATOR (
±
5%)
LFSS BIT AT
CR1.2
DPSS BIT
AT CR1.3
UVLO
V
CC
[4.5V TO 5.5V]
SVM
SUPPLY VOLTAGE
MONITOR
2.0V
CONTROL REGISTERS
DS3994
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