参数资料
型号: DS3994Z+T&R
厂商: Maxim Integrated
文件页数: 8/28页
文件大小: 0K
描述: IC CCFL CNTRLR 4CH 28-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
类型: CCFL 控制器
频率: 20 ~ 80 kHz
电流 - 电源: 9mA
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 带卷 (TR)
4-Channel Cold-Cathode
Fluorescent Lamp Controller
Functional Diagram
EEPROM
I 2 C DEVICE
CONFIGURATION
PORT
SDA
SCL
A0
I 2 C-
COMPATIBLE
INTERFACE
CONTROL REGISTERS
3-BYTE USER MEMORY
SYSTEM
ENABLE/POR
UVLO
V CC
[4.5V TO 5.5V]
2.0V
SVM
SUPPLY VOLTAGE
MONITOR
DS3994
FAULT
FAULT
HANDLING
CHANNEL FAULT
CHANNEL ENABLE
LCMn
LAMP FREQUENCY
INPUT/OUTPUT LSYNC
20kHz TO 80kHz
LFSS BIT AT
CR1.2
x512
PLL
4-PHASE
GENERATOR
[20kHz
TO 80kHz]
LAMP CURRENT
MONITOR
EXTERNAL RESISTOR
LAMP FREQUENCY SET
LOSC
20kHz TO 80kHz
OSCILLATOR ( ± 2%)
[10.24MHz TO 40.96MHz]
FOUR
INDEPENDENT
CCFL
CONTROLLERS
OVDn
OVERVOLTAGE
DETECTION
DPSS BIT
AT CR1.3
MUX
RGSO BIT
0
GAn
DPWM SIGNAL
INPUT/OUTPUT PSYNC
AT CR1.4
1
1
MUX
MOSFET
GATE
GBn DRIVERS
ANALOG BRIGHTNESS
CONTROL BRIGHT
0
DPSS BIT
AT CR1.3
EXTERNAL RESISTOR
DPWM FREQUENCY SET/
DPWM CLOCK INPUT
POSC
0
1
MUX
POSCS BIT
AT CR1.1
RAMP
GENERATOR
DPWM
SIGNAL
22.5Hz TO 440Hz
OSCILLATOR ( ± 5%)
22.5Hz TO 440Hz
GND
8
_____________________________________________________________________
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