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| 型号： | BD6583MUV-AE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 16/35页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHIT BCKLGT 24VQFN |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.2MHz |
| 电源电压： | 2.7 V ~ 22 V |
| 输出电压： | 43V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | VQFN024V4040 |
| 包装： | 标准包装 |
| 工作温度： | -30°C ~ 85°C |
| 产品目录页面： | 1372 (CN2011-ZH PDF) |
| 其它名称： | BD6583MUV-ADKR BD6583MUV-ADKR-ND BD6583MUV-AE2DKR |
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BD6583MUV-A
Datasheet
● How to select the number of LED lines of the current driver
When the number of LED lines of the current driver is reduced, the un-select can be set the matter that the unnecessary
LED1 to 6 terminal is connected to GND. When it uses with 4 lines and so on, it can correspond to it by connecting 2
unnecessary lines to GND.
RSTB is used as a power supply of this decision circuit. The select of the terminal is judged, It has no relation to the logic of
PWMPOW and PWMDRV and it isn't judged an unnecessary LED line even if it is connected to GND when it is judged a
necessary terminal once. This information can be reset by setting RSTB at 0V.
● Start control and select LED current driver
BD6583MUV-A can control the IC system by RSTB, and IC can power off compulsory by setting 0.2V or below. Also, It
powers on PWMPOW is at more than 1.4V and RSTB is at more than 2.25V.
When RSTB=PWMPOW=H, ISETH current is selected at PWMDRV=H and ISETL current is selected at PWMDRV=L.
The starting current in PWMDRV=L sets OFF second time rise of PWMDRV and it becomes 0mA setting after that.
After RSTB sets L once, the starting current can be flowed again by changing it to H.
RSTB
H
H
H
H
L
PWMPOW
L
H
L
H
L, H
PWMDRV
L
L
H
H
L, H
IC
Off
On
Off
On
Off
LED current
OFF
Starting current decided with ISETL
OFF
Current decided with ISETH
OFF
● Attendance point of the restriction resistance input to RSTB
When the restriction resistance is input to RSTB, it is necessary to consider the input current of RSTB.
The input current of RSTB changes that depending on the power-supply voltage and the temperature reference to Figure
35.
Because the temperature characteristic of the input current is shown in Figure 35, please choose resistance for which the
voltage of the terminal can be guaranteed to 2.1V or more.
And, it has the margin in the decision of resistance, and please confirm and make sure it is no problem in a real application.
The decision example of restriction resistance
1.When use the current driver of 6 parallel
2.9V(to RSTB power-supply) - restriction resistance value × 124 μ A(100 ℃ input current) > 2.1V
restriction resistance value < (2.9-2.1)/124 μ A=6.45k ?
2.When use the current driver of 3 parallel
2.9V(to RSTB power-supply) - restriction resistance value × 430 μ A(100 ℃ input current) > 2.1V
restriction resistance value < (2.9-2.1)/430 μ A=1.86k ?
250
200
+100 ℃
+80 ℃
+25 ℃
BD6583MUV-A
150
-30 ℃
Power supply
for RSTB
Limit resistor
RSTB
terminal
100
RSTB input current
50
2.1
2.4
2.7
3
3.3
3.6
RSTB[V]
Figure 35. RSTB input current
Figure 36. RSTB terminal voltage-RSTB input current
(At the time of the current driver 6 lines use)
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
16/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BD6583MUV-E2 | 功能描述:LED照明驱动器 72 LEDs 2.7-22V 43V Max Out 25mA Out 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 |
| BD6586MUV | 制造商:ROHM 制造商全称:Rohm 功能描述:Silicon Monolithic Integrated Circuit |
| BD6586MUV_11 | 制造商:ROHM 制造商全称:Rohm 功能描述:White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type) |
| BD6586MUV-E2 | 功能描述:LED照明驱动器 24 LEDs 2.7-5.5V 24V Max Out 25mA Out 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 |
| BD6590MUV | 制造商:ROHM 制造商全称:Rohm 功能描述:White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type) |
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