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参数资料
| 型号： | AL8807W5-7 |
| 厂商： | Diodes Inc |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR DCDC BUCK SOT25 |
| 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： | 通用 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 6 V ~ 36 V |
| 输出电压： | 36V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-25 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 其它名称： | AL8807W5-7DIDKR |
AL8807
Application Information (cont.)
Recommendations for minimising radiated EMI and other transients and thermal considerations are:
1.
2.
3.
4.
5.
6.
The decoupling capacitor (C1) has to be placed as close as possible to the V IN pin and D1 Cathode
The freewheeling diode’s (D1) anode, the SW pin and the inductor have to be placed as close as possible to each other to avoid ringing.
The Ground return path from C1 must be a low impedance path with the ground plane as large as possible
The LED current sense resistor (R1) has to be placed as close as possible to the V IN and SET pins.
The majority of the conducted heat from the AL8807 is through the GND pin 2. A maximum earth plane with thermal vias into a second earth
plane will minimise self-heating
To reduce emissions via long leads on the supply input and LEDs low RF impedance capacitors (C2 and C5) should be used at the point the
wires are joined to the PCB
A typical application for the AL8807 is an LED MR16 lamp (schematic shown in Figure 38).
Figure 38 MR16 Circuit Schematic
An evaluation board for the AL8807 (named the AL8807EV2) for MR16 is available on request from your local Diodes’ sales representative. This
board follows Diodes’ recommendations for low EMI. Images of the top layer and bottom layers are shown in Figure 39.
Figure 39 Recommended MR16 PCB Layout
AL8807
Document number: DS35281 Rev. 5 - 2
15 of 20
www.diodes.com
March 2013
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AL8808EV1 | 功能描述:AL8808 1, Non-Isolated Output LED Driver Evaluation Board 制造商:diodes incorporated 系列:- 零件状态:有效 电流 - 输出/通道:680mA 输出和类型:1，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:6 V ~ 30 V 所含物品:板 使用的 IC/零件:AL8808 标准包装:1 |
| AL8808EV2 | 功能描述:AL8808 1, Non-Isolated Output LED Driver Evaluation Board 制造商:diodes incorporated 系列:- 零件状态:有效 电流 - 输出/通道:680mA 输出和类型:1，非隔离 电压 - 输出:- 特性:- 电压 - 输入:12VAC，12 V ~ 20 V 所含物品:板 使用的 IC/零件:AL8808 标准包装:1 |
| AL8808WT-7 | 功能描述:LED照明驱动器 LED MV Int Switch TS Switch TSOT25 T&R 3K 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 |
| AL8811 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:Boost/Buck/Inverting DC-DC CONVERTER |
| AL8811M8-13 | 制造商:Diodes Incorporated 功能描述:LED LV INT SWITCH MSOP-8 T&R 2.5K - Tape and Reel 制造商:Diodes Incorporated 功能描述:LED MV INT SWITCH MSOP-8 |
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