参数资料
型号: AP8801SG-13
厂商: Diodes Inc
文件页数: 7/14页
文件大小: 0K
描述: IC LED DRIVER HIGH BRIGHT 8SOIC
特色产品: LED Driver Solutions
AP880X Series Step-Down DC/DC Converter
标准包装: 1
恒定电流:
拓扑: PWM,降压(降压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 高亮度 LED(HBLED)
频率: 500kHz
电源电压: 8 V ~ 48 V
输出电压: 48V
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOP
包装: 标准包装
工作温度: -40°C ~ 105°C
产品目录页面: 1138 (CN2011-ZH PDF)
其它名称: AP8801SGDIDKR
AP8801
500mA LED STEP-DOWN CONVERTER
Application Information (cont.)
The inductor influences the LED current accuracy that the system is able to provide. The following section highlights how to select the
inductor in relation to the device packages and the LED current, while maintaining the chip temperature below 70°C.
12
11
10
9
8
7
6
5
4
3
2
1
47μH
68μH
100μH
150μH
220μH
470μH
8% Accuracy, <70°C Case Temperature
100μH
68μH
47μH
150μH
220μH
470μH
0
5
10
15
20
25
30
35
40
45
SUPPLY VOLTAGE (V)
Figure. 16 Minimum Recommended Inductor with 500mA LED Current
Capacitor Selection
The small size of ceramic capacitors makes them ideal for AP8801 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 AP8801.
A 4.7 μ F input capacitor is suggested for application with an input voltage equal or higher than 40V.
Diode Selection
Schottky diodes, e.g. B1100, with their low forward voltage drop and fast reverse recovery, are the ideal choice for AP8801 applications.
AP8801
Document number: DS31765 Rev. 7 - 2
7 of 14
www.diodes.com
June 2012
? Diodes Incorporated
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