收藏本站
BD1603NUV
Datasheet
8.
Setting the LED Current
The LED current is set as follows.
The constant must be determined, considering variations in resistance and LED.
ILED ?
VOUT ? V F
R
? A ?
V OUT
VOUT: Output voltage of BD1603NUV
V F : V F in the LED to be connected
BD1603NUV
V F
R : LED current setting resistance
R
Figure 14. Setting the LED Current
9.
Brightness Control
Brightness Control takes place in this LSI as follows.
a) PWM
The EN pin is turned ON or OFF repeatedly via the PWM signal.
It is recommended that the PWM frequency is 100Hz or below. This frequency must be determined, fully evaluating
the linearity of brightness to the PWM duty. Brightness control must take place as shown in “b” below if the rush
current causes a problem when the EN pin is ON.
PWM signal
BD1603NUV
EN
Figure 15. PWM Brightness Control
Control
Figure 16. ON/OFF Pin Control
(4.5V, 100Hz)
Figure 17. ON/OFF Pin
(5.0V, 100Hz)
b) Switching the LED Current
Switching the LED current takes place via the external switch.
The constant must be determined, considering the ON resistance of the switch transistor.
V OUT
BD1603NUV
Figure 18. Brightness Control via the External Transistor
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
8/12
TSZ02201-0G3G0C200040-1-2
17.Dec.2012 Rev.001
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
BD1604MUV-E2 IC LED DRVR WHITE BCKLGT 16-VQFN
BD1754HFN-TR IC LED DRIVR WHITE BCKLGT 8-HSON
BD2802GU-E2 IC LED DRIVER RGB 24-VCSP
BD6062GU-E2 IC LED DRIVER FALSH VCSP85H2
BD6066EKN-E2 IC LED DRVR WHITE BCKLT 28-HVQFN
BD6069GUT-E2 IC LED DRIVR WHITE BCKLGT 8-VCSP
BD6081GVW-E2 IC LED DRIVER BACKLIGHT 63SBGA
BD6083GUL-E2 IC LED DRIVER BKLT 36VCSP50L3
相关代理商/技术参数
BD1604MUV 制造商:ROHM 制造商全称:Rohm 功能描述:4-Parallel white-LED Driver for mobile phone
BD1604MUV_1 制造商:ROHM 制造商全称:Rohm 功能描述:4-Parallel white-LED Driver for mobile phone
BD1604MUV_11 制造商:ROHM 制造商全称:Rohm 功能描述:Backlight LED Drivers for Small LCD Panels (Charge Pump Type)
BD1604MUV-E2 功能描述:LED照明驱动器 Backlight LED Driver for Small Panel 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
BD1604MVV 制造商:ROHM 制造商全称:Rohm 功能描述:Backlight LED Drivers for Small LCD Panels (Charge Pump Type)
BD1604MVV-E2 功能描述:LED照明驱动器 Backlight LED Driver for Small Panel 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
BD1606MVV 制造商:ROHM 制造商全称:Rohm 功能描述:Backlight LED Driver for Small LCD Panels (Charge Pump Type)
BD1606MVV_11 制造商:ROHM 制造商全称:Rohm 功能描述:Backlight LED Driver for Small LCD Panels (Charge Pump Type)