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参数资料
| 型号： | AL8807MP-13 |
| 厂商： | Diodes Inc |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR CONS CURR MSOP-8EP |
| 标准包装： | 2,500 |
| 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： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 8-MSOP-EP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 其它名称： | AL8807-MP-13DIDKR AL8807-MP-13DIDKR-ND |
AL8807
Application Information (cont.)
EMI and Layout Considerations
The AL8807 is a switching regulator with fast edges and measures small differential voltages; as a result of this care has to be taken with
decoupling and layout of the PCB.To help with these effects the AL8807 has been developed to minimise radiated emissions by controlling the
switching speeds of the internal power MOSFET. The rise and fall times are controlled to get the right compromise between power dissipation due
to switching losses and radiated EMI. The turn-on edge (falling edge) dominates the radiated EMI which is due to an interaction between the
Schottky diode (D1), Switching MOSFET and PCB tracks. After the Schottky diode reverse recovery time of around 5ns has occurred; the falling
edge of the SW pin sees a resonant loop between the Schottky diode capacitance and the track inductance, L TRACK , See figure 36.
Figure 36 PCB Loop Resonance
The tracks from the SW pin to the Anode of the Schottky diode, D1, and then from D1’s cathode to the decoupling capacitors C1 should be as short
as possible. There is an inductance internally in the AL8807 this can be assumed to be around 1nH. For PCB tracks a figure of 0.5nH per mm can
be used to estimate the primary resonant frequency. If the track is capable of handling 1A increasing the thickness will have a minor effect on the
inductance and length will dominate the size of the inductance.
The resonant frequency of any oscillation is determined by the combined
inductance in the track and the effective capacitance of the Schottky diode. An example of good layout is shown in figure 37 - the stray track
inductance should be less than 5nH.
Figure 37 Recommended PCB Layout
AL8807
Document number: DS35281 Rev. 5 - 2
14 of 20
www.diodes.com
March 2013
? Diodes Incorporated
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| AL8807MP-7 | 功能描述:LED照明驱动器 36V High EFF Low EMI 1A Buck LED Driver 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 |
| AL8807QMP-13 | 功能描述:LED 驱动器 IC 1 输出 DC DC 稳压器 降压（降压） 模拟，PWM 调光 1.3A（开关） 8-MSOP-EP 制造商:diodes incorporated 系列:汽车级，AEC-Q100 包装:剪切带（CT） 零件状态:有效 类型:DC DC 稳压器 拓扑:降压（降压） 内部开关:是 输出数:1 电压 - 供电（最低）:6V 电压 -?供电（最高）:30V 电压 - 输出:- 电流 - 输出/通道:1.3A（开关） 频率:1MHz 调光:模拟，PWM 应用:汽车级 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸焊盘 供应商器件封装:8-MSOP-EP 标准包装:1 |
| AL8807W5-7 | 功能描述:LED显示驱动器 LED LV Int Switch RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| 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 |
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