收藏本站
NCL30105
V CS (t)
t ILIM(fault)
t ILIM
V ILIM(fault)
V ILIM
V ILIM(fault)
Comparator
t LEB(fault)
up
t
V ILIM
Comparator
Ignored
down
t
DRV
t LEB
t LEB
t
off
t
Figure 30. The Overcurrent Comparator Increments the Counter during a Fault
Minimum Dimming Duty Cycle
During each DIM cycle if the max on time limit is reached
a certain number of times, the current comparator must be
triggered the same number of times to reset the fault counter.
For each DIM cycle, if the maximum on time limit is reached
a greater number of times than the number of times the
current comparator is triggered, the fault counter is not reset
and is incremented each DIM cycle until the fault count is
reached (Nfault = 8). This results in a minimum dimming
combination. The minimum dimming duty cycle is
described in Figure 31 shown below. The first DRV pulse
during the dimming duty cycle reaches the maximum on
time, but the second DRV pulse does not and is turned off by
the current comparator. If the dimming on time (duty cycle)
is reduced, the second DRV pulse is turned off by the DIM
pin voltage, the current comparator is not triggered, and the
NCL30105 latches after 8 dimming cycles.
duty cycle for a particular LED string voltage and inductor
Figure 31. Minimum Dimming Duty Cycle
http://onsemi.com
16
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
NCP1013LEDGEVB BOARD EVAL 5W UNIV LED DRIVER
NCP1028LEDGEVB EVAL BOARD FOR NCP1028LEDG
NCP1216AFORWGEVB BOARD EVAL NCP1216A 35W
NCP1351LEDGEVB EVAL BOARD FOR NCP1351LEDG
NCP3065BBGEVB BOARD EVAL NCP3065 MR16 BOOST
NCP3066SCBCKGEVB EVAL BOARD FOR NCP3066SCBCKG
NCP5005GEVB EVAL BOARD FOR NCP5005G
NCP5006EVB EVAL BOARD FOR NCP5006
相关代理商/技术参数
NCL30160 制造商:未知厂家 制造商全称:未知厂家 功能描述:1.0A Constant-Current Buck Regulator for Driving High Power LEDs
NCL30160DR2G 功能描述:LED照明驱动器 40V LED Buck Regltr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
NCL30160GEVB 功能描述:电源管理IC开发工具 40V, 1A LED Driver EVM RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
NCL30161MNTXG 制造商:ON Semiconductor 功能描述:CONSTANT-CURRENT BUCK REG - Tape and Reel 制造商:ON Semiconductor 功能描述:Buck Reg,Constant Current,for LED Drive
NCL354MTD 制造商:未知厂家 制造商全称:未知厂家 功能描述:Cordless Phone Circuit
NCL35791C DIE 制造商:Texas Instruments 功能描述:
NCL37491C1 DIE 制造商:Texas Instruments 功能描述:
NCL37491C2 DIE 制造商:Texas Instruments 功能描述: