参数资料
型号: ZXSC300E5TA
厂商: Diodes Inc
文件页数: 9/12页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT SOT23-5
特色产品: LED Driver Solutions
标准包装: 1
恒定电流:
拓扑: 升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光,闪灯/白光
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 200kHz
电源电压: 0.8 V ~ 8 V
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 1478 (CN2011-ZH PDF)
其它名称: ZXSC300E5DKR
ZXSC300
Output Power Calculation
P OUT =
(V OUT V IN ) x ( I PK + I MIN ) T OFF
F =
By making the above assumptions for inductance and
peak current the output power can be determined by:
x
2 ( T ON + T OFF )
Note: V OUT = output voltage + Schottky rectifier voltage
drop
Operating frequency can be derived by:
1
( T ON + T OFF )
Capacitor selection
For pulsed operation, as in the maximum battery life
solution, no capacitors are required at the output to
the LED. For rectified operation, as in the maximum
brightness solution, a small value ceramic capacitor
is required, typically 2.2uF.
where
Generally an input capacitor is not required, but a
T OFF ? 1.7μs (internally set by ZXSC300)
and
small ceramic capacitor may be added to aid EMC,
typically 470nF to 1uF.
Demonstration board
T ON
=
T OFF ( V OUT ? V IN )
V IN
A demonstration board for the Maximum battery life
solution, is available upon request. These can be
obtained through your local Zetex office or through
and
I MIN = I PK ?
( V OUT - V IN ) x T OFF
L
Zetex web pages. For all reference designs Gerber
files and bill of materials can be supplied.
Layout of Maximum battery life solution
Top Copper
Bottom Copper
ISSUE 4 - SEPTEMBER 2007
9
Drill Holes
Silk Screen
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相关代理商/技术参数
参数描述
ZXSC300E5TA 制造商:Diodes Incorporated 功能描述:IC LED DRIVER SMD SOT-23-5 300
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