- 您现在的位置：买卖IC网 > Datasheet目录310 > AP8800FNG-7 (Diodes Inc)IC LED DRIVER HIGH BRIGHT 10DFN Datasheet资料下载
参数资料
| 型号： | AP8800FNG-7 |
| 厂商： | Diodes Inc |
| 文件页数： | 7/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER HIGH BRIGHT 10DFN |
| 特色产品： | LED Driver Solutions AP880X Series Step-Down DC/DC Converter |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 600kHz |
| 电源电压： | 8 V ~ 28 V |
| 输出电压： | 28V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-UFDFN 裸露焊盘 |
| 供应商设备封装： | DFN3030-10 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1138 (CN2011-ZH PDF) |
| 其它名称： | AP8800FNGDIDKR |
AP8800
Application Information (cont.)
PWM Dimming
A PWM signal with a max resolution of 8bit can be applied to CTRL regulate the output current to a value below the nominal average value set
by resistor R SET . PWM dimming gives a wider average LED current variation and is more accurate at lower average LED currents than by
applying DC voltage to the CTRL pin to achieve average LED current dimming.
Figure 5 shows the typical PWM response of the AP8800A. An internal filter produces a rump.
Figure 5 Typical PWM Dimming Waveform
The recommended method of driving the CTRL pin and controlling the amplitude of the PWM waveform is to use a small NPN switching
transistor as shown below:
Figure 6 Open Collector PWM Dimming Circuit
This scheme uses the 200k resistor between the ADJ pin and the internal voltage reference as a pull-up resistor for the external transistor eg
MMBT3904.
Soft-Start
An external capacitor from the CTRL pin to ground will provide soft-start delay, by increasing the time taken for the voltage on this pin to rise to
the turn-on threshold and by slowing down the rate of rise of the control voltage at the input of the comparator.
The soft-start time is 0.5ms/nF.
AP8800
Document number: DS31764 Rev. 7 - 2
7 of 13
www.diodes.com
August 2012
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| AP8801M8G-13 | IC LED DRIVER HIGH BRIGHT 8MSOP |
| AP8802HSP-13 | IC LED DRIVER HIGH BRIGHT 8SOIC |
| AP8802SPG-13 | IC LED DRIVER HIGH BRIGHT 8SOIC |
| AP8803WTG-7 | IC LED DRIVER CONN CURR TSOT23-5 |
| APEK4402KLP-01-T-DK | BOARD EVAL FOR A4402 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AP8800M8G-13 | 功能描述:LED照明驱动器 28V, 350mA LED DC/DC Converter 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 |
| AP8800SG-13 | 功能描述:LED照明驱动器 28V, 350mA LED DC/DC Converter 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 |
| AP8800SG-13-CUT TAPE | 制造商:DIODES 功能描述:AP8800 Series 350 mA 28 V 600 kHz SMT LED Step-Down Converter - SOIC-8L |
| AP8801 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:500mA LED Step-Down Converter |
| AP8801_0912 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:500mA LED Step-down Converter |
发布紧急采购，3分钟左右您将得到回复。