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参数资料
| 型号： | BD6142AMUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 17/33页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER SGL STEP UP 24QFN |
| 标准包装： | 2,500 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz ~ 1.5MHz |
| 电源电压： | 4.2 V ~ 27 V |
| 输出电压： | 41V |
| 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： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
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BD6142AMUV
Datasheet
● Start control (ENABLE) and select LED current driver (PWM)
This IC can control the IC system by ENABLE, and IC can power off compulsory by setting 0.8V or below. Also, It powers
on ENABLE is at more than 2.0V.
After it’s selected to ENABLE=H, When it is selected at PWM=H, LED current decided with ISET resistance flow.
Next, When it is selected at PWM=L, LED current stop to flow.
ENABLE
0
1
0
1
PWM
0
0
1
1
IC
Off
On
Off
On
LED current
OFF
OFF
OFF
Current decided with ISET
● 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.
RISET = 720/ILEDmax
Also, Normal current setting range is 10mA to 30mA. LED current becomes a leak current MAX 2μA at OFF setting.
ISET Normal current setting example
RISET LED current
24k ? (E24) 30.0mA
30k ? (E24) 24.0mA
36k ? (E24) 20.0mA
43k ? (E24) 16.7mA
68k ? (E12) 10.6mA
● Frequency setting range
Switching frequency can be set up by resistance value (RFSET) connecting to FSET port.
Setting of frequency is given as shown below.
Also, Frequency setting range is 0.60MHz to 1.60MHz.
FSET frequency setting example
RFSET frequency
130k ? (E96) 0.57MHz
56k ? (E24) 1.25MHz
43k ? (E24) 1.59MHz
Frequency
[MHz]
1.59
1.25
0.57
Max Duty example
43 k ?
56k ?
130 k ?
FSET[k ? ]
Frequency
Max Duty[%]
Min Typ Max
0.57MHz - 96.0 -
1.25MHz 91.0 95.0 99.0
1.59MHz - 92.0 -
Min Duty example
Frequency
Min Duty[%]
Min Typ Max
1.25MHz - 20 -
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
17/30
TSZ02201-0G3G0C400340-1-2
03.Dec.2012 Rev.001
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