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参数资料
| 型号： | AP8800FNG-7 |
| 厂商： | Diodes Inc |
| 文件页数： | 8/13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.)
Fault conditions
The AP8800 is inherently protected against open-LED conditions. If one LED becomes open circuit the device automatically stops switching and
will only retart if the open-LED fault is removed.
If one or more LEDs should become shorted together then the switching frequency and duty cycle will change. If one or more LEDs get shorted
together, the ramp-up time of LED current will become shorter due to there being a larger voltage across the inductor. However, the ramp-down
time of the LED current will increase due to the voltage across the inductor becoming smaller.
Figure 7 below shows the AP8800 driving 3 LEDs when all 3 LEDs become shorted together. Due to the large voltage change across the
inductor during both LED current ramp-up and ramp-down we see a large difference in switching frequency.
Figure 7 LED Short Fault Condition
Thermal Considerations
The graph below in Figure 8, gives details for power derating. This assumes the device to be mounted on a 25 x 25mm PCB with 1oz copper
standing in still air.
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
MSOP-8
DFN3030-10
SO-8
0
0
25
50
75
100
125
150
AMBIENT TEMPERATURE (°C)
Figure 8 Power Dissipation Derating Curve
AP8800
Document number: DS31764 Rev. 7 - 2
8 of 13
www.diodes.com
August 2012
? Diodes Incorporated
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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 |
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