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参数资料
| 型号： | BD6586MUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 24-VQFN |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 700kHz ~ 1.3MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 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： | -40°C ~ 85°C |
| 产品目录页面： | 1372 (CN2011-ZH PDF) |
| 其它名称： | BD6586MUV-E2DKR |
BD6586MUV
Datasheet
● Start Control and Select Constant Current Driver
BD6586MUV can control the start conditions by EN1, 2 and PWM terminals, and sets 0.4V or below EN1, 2 terminals, so IC
can power off. EN1, 2 and PWM power on at more than 1.4V, constant current can select ON/OFF by the combination of
EN as shown below table.
When there is unused constant current driver, unused LED terminal is set “OPEN”.
EN1
Enable
EN2
PWM
LED1
Constant current driver
LED2 LED3
LED4
IC POWER
H
L
H
L
H
L
H
L
H
H
L
L
H
H
L
L
H
H
H
H
L
L
L
L
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
● Control Signal Input Timing
2.7V
Stable voltage
0V
VBAT
PWM
1
2
3
Min. 100μs
10k ?
VBAT
EN1,2
DC/DC VOUT
5V
PIN
GND
300k ?
Figure 5. control Signal timing
Figure 6. Voltage with a control sign higher than VBAT
Example corresponding to application of conditions
In case you input control signs, such as EN1, EN2 and PWM in the condition that the standup of supply voltage (VBAT) is
not completed, be careful of the following point.
① Input each control signal after VBAT exceeds 2.7V.
② Please do not input each control sign until VBAT exceeds HI voltage of EN1, EN2 and PWM.
③ When you input HI voltage to EN1, EN2 and PWM during the standup of VBAT, please give Min.100μs as the standup
time of VBAT from stable voltage to 2.7V.
There is no timing limitation at each input signal of EN1, EN2 and PWM.
If each control sign changes into a condition lower than VBAT in (1) and (2), it goes via the ESD custody diode by the side
of VBAT of each terminal. A power supply is supplied to VBAT and there is a possibility of malfunctioning. Moreover, when
the entrance current to the terminal exceeds 50mA, it has possibility to damage the LSI. In order to avoid this condition, as
shown in the above figure, please insert about 10k ? in a signal line, and apply current qualification.
● LED Current Setting Range
LED current can set up Normal current by resistance value (RISET) connecting to ISET voltage.
Setting of each LED current is given as shown below.
Normal current = 20mA(24k ? /RISET)
Also, Normal current setting range is 10mA to 25mA.
LED current becomes a leak current MAX 2μA at OFF setting.
ISET Normal current setting example
RISETH LED current RISETH
24k ? (E24) 20mA 28k ? (E96)
25.5 k ? (E96) 18.8mA 30k ? (E24)
27 k ? (E12) 17.8mA 33k ? (E6)
LED current
17.1mA
16.0mA
14.5mA
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
6/20
TSZ02201-0G3G0C400190-1-2
10.Dec.2012 Rev.001
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| BD6592MUV_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) |
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