参数资料
型号: DS3994Z+T&R
厂商: Maxim Integrated
文件页数: 18/28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
DEVICE AND
INVERTER SUPPLIES
AT PROPER LEVELS?
YES
RESET FAULT COUNTER
AND FAULT OUTPUT
YES
FAULT STATE
[ACTIVATE FAULT OUTPUT]
NO
FAULT WAIT
[1024 LAMP CYCLES]
NO
FAULT COUNTER = 15?
YES
AUTO RETRY ENABLED?
[ARD BIT AT CR1.5]
INCREMENT FAULT
COUNTER
STRIKE LAMP
[RAMP AND REGULATE TO
OVD THRESHOLD]
IF LAMP REGULATION
THRESHOLD IS MET
LAMP STRIKE TIMEOUT
[SEE REGISTER CR3]
OVERVOLTAGE
[64 LAMP CYCLES]
LAMP OVERCURRENT
[INSTANTANEOUS IF
ENABLED VIA THE
LOC BIT AT CR1.0]
RUN LAMP
[REGULATE LAMP
CURRENT BOUNDED BY
LAMP VOLTAGE]
LAMP OUT TIMEOUT
[SEE REGISTER CR3]
MOSFET GATE DRIVERS ENABLED
Figure 9. Fault-Handling Flow Chart
18
____________________________________________________________________
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