- 您现在的位置：买卖IC网 > Datasheet目录315 > BD6142AMUV-E2 (Rohm Semiconductor)IC LED DRIVER SGL STEP UP 24QFN Datasheet资料下载
参数资料
| 型号： | BD6142AMUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 20/33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 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页
BD6142AMUV
Datasheet
● OUTPUT Capacitor selection
Output Capacitor smoothly keeps output voltage and supplies LED current. Output Voltage consists of Charge (FET ON)
and Discharge (LED current). So Output voltage has Output ripple Voltage every FET switching.
Output ripple voltage is calculated as following.
Output ripple Voltage
- Switching cycle = T - Total LED current = I LED
- Switching ON duty = D - Output ripple Voltage = V ripple
- Output Capacitor = COUT - Output Capacitor (real value) = C real
- Decreasing ratio of Capacitor = C error
C real = COUT × C error
(Capacitor value is decreased by Bias, so)
C real = I LED × D × T / V ripple
COUT = I LED × D × T / V ripple / C error
(Example 1)
In case of, V IN =12.0V, fsw = 1.2MHz, VOUT =32V, I LED =120mA, COUT = 8.8μF, C error = 50%
T = 1 / 1.2MHz
D = 1 – V IN / VOUT = 1 – 12/32
V ripple = I LED × D × T / (COUT×C error ) = 120mA × (1-12/32) / 1.2MHz / (8.8μF×0.5)
=
14.2mV
COUT
C real
0V
35V
50V
Output voltage
Figure 33. Bias Characteristics of Capacitor
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
20/30
TSZ02201-0G3G0C400340-1-2
03.Dec.2012 Rev.001
相关PDF资料 |
PDF描述 |
|---|---|
| BD6581GU-E2 | IC LED DVR WHT BCKLGHT VCSP85H2 |
| BD6583MUV-AE2 | IC LED DRIVER WHIT BCKLGT 24VQFN |
| BD6586MUV-E2 | IC LED DRVR WHITE BCKLGT 24-VQFN |
| BD6592MUV-E2 | IC LED DRVR WHITE BCKLGT 24-VQFN |
| BD7844AEFV-E2 | IC LED DISPLAY DVR 5V 28-HTSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BD615 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:PNP SILICON EPIBASE TRANSISTORS |
| BD6150CS | 制造商:PANJIT 制造商全称:Pan Jit International Inc. 功能描述:SURFACE MOUNT SCHOTTKY BARRIER RECTIFIERS |
| BD6150CT | 制造商:PANJIT 制造商全称:Pan Jit International Inc. 功能描述:SURFACE MOUNT SCHOTTKY BARRIER RECTIFIERS |
| BD6150MUV | 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) |
| BD6150MUV_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) |
发布紧急采购，3分钟左右您将得到回复。