- 您现在的位置：买卖IC网 > Datasheet目录310 > AL8806MP8-13 (Diodes Inc)IC LED DVR CONS CURR 8MSOP Datasheet资料下载
参数资料
| 型号： | AL8806MP8-13 |
| 厂商： | Diodes Inc |
| 文件页数： | 10/15页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR CONS CURR 8MSOP |
| 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 |
| 频率： | 1MHz |
| 电源电压： | 6 V ~ 30 V |
| 输出电压： | 30V |
| 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 |
| 其它名称： | AL8806M8P-13DIDKR AL8806M8P-13DIDKR-ND AL8806MP8-13DIDKR |
AL8806
Application Information (cont.)
Capacitor Selection
The small size of ceramic capacitors makes them ideal for AL8806 applications. X5R and X7R types are recommended because they retain their
capacitance over wider voltage and temperature ranges than other types such as Z5U.
A 2.2 μ F input capacitor is sufficient for most intended applications of AL8806; however a 4.7 μ F input capacitor is suggested for input voltages
approaching 30V.
Diode Selection
For maximum efficiency and performance, the rectifier (D1) should be a fast low capacitance Schottky diode with low reverse leakage at the
maximum operating voltage and temperature. The Schottky diode also provides better efficiency than silicon PN diodes, due to a combination of
lower forward voltage and reduced recovery time.
It is important to select parts with a peak current rating above the peak coil current and a continuous current rating higher than the maximum output
load current. In particular, it is recommended to have a diode voltage rating at least 15% higher than the operating voltage to ensure safe operation
during the switching and a current rating at least 10% higher than the average diode current. The power rating is verified by calculating the power
loss through the diode.
Schottky diodes, e.g. B240 or B140, with their low forward voltage drop and fast reverse recovery, are the ideal choice for AL8806 applications.
Thermal and Layout Considerations
For continuous conduction mode of operation, the absolute maximum junction temperature must not be exceeded. The maximum power dissipation
depends on several factors: the thermal resistance of the IC package ? JA , PCB layout, airflow surrounding the IC, and difference between junction
and ambient temperature.
The maximum power dissipation can be calculated using the following formula:
where
T J(MAX) is the maximum operating junction temperature,
T A is the ambient temperature, and
? JA is the junction to ambient thermal resistance.
The recommended maximum operating junction temperature, T J , is 125°C and so maximum ambient temperature is determined by the AL8806’s
junction to ambient thermal resistance, ? JA . To support high LED drive at higher ambient temperatures the AL8806 has been packaged in thermally
enhanced MSOP-8EP package.
? JA , is layout dependent and the AL8806’s ? JA in MSOP-8EP on a
1600
51 x 51mm double layer PCB with 2oz copper standing in still air is
approximately 69°C/W.
Therefore the maximum power dissipation at T A = +25°C is:
1400
1200
1000
MSOP-8EP
P D ( MAX ) ?
? 125 ? C ? 25 ? C ? ? 1 . 45 W
69 ? C / W
800
600
400
Figure 5, shows the power derating of the AL8806 on an FR4
51x51mm PCB with 2oz copper standing in still air.
200
0
As the ambient temperature increases and/or the PCB area reduces
the maximum allowable power dissipated by the AL8806 will
decrease.
10 of 15
AL8806
www.diodes.com
Document number: DS35144 Rev. 5 - 2
-40 -25 -10
5 20 35 50 65 80
Ambient temperature (°C)
Figure 5 Derating Curve
95 110 125
July 2013
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| AL8807W5-7 | IC LED DRVR DCDC BUCK SOT25 |
| AL9910AS-13 | IC LED DRVR HIGH BRIGHT SO8EP |
| ALC60481R05 | PWR SUP AC-DC 6-48V 1.05A 50.4W |
| ALV100362R5 | POWER SUPPLY AC-DC 36V 2.5A 90W |
| ALV60361R7 | POWER SUPPLY AC-DC 36V 1.7A 61W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AL8806QMP-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 1.5A（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:36V 电流 - 输出/通道:1.5A（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 |
| AL8807 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:HIGH EFFICIENCY LOW EMI 36V 1A BUCK LED DRIVER |
| AL8807A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:The AL8807A is a step-down DC/DC converter designed to drive LEDs with a constant current |
| AL8807AEV1 | 功能描述:AL8807A 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 ~ 36 V 所含物品:板 使用的 IC/零件:AL8807A 标准包装:1 |
| AL8807AEV3 | 功能描述:AL8807A 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:1A 输出和类型:1，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:6 V ~ 36 V 所含物品:板 使用的 IC/零件:AL8807A 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。