参数资料
型号: SP7648EU-L
厂商: Exar Corporation
文件页数: 10/13页
文件大小: 0K
描述: IC LED DRVR FLASH PFM 10MSOP
标准包装: 50
恒定电流:
拓扑: 升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 闪灯/白光,通用
类型 - 次要: 高亮度 LED(HBLED),白色 LED
电源电压: 2.7 V ~ 4.5 V
输出电压: 2.7 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
工作温度: -40°C ~ 85°C
其它名称: 1016-1536-5
SP7648EU-L-ND
S P 7 6 4 8
L o w R e f e r e n c e H i g h E f f i c i e n c y B o o s t R e g u l a t o r
feedback pin voltage will go to ZeroV and the
output voltage will go to 5V which will protect
the part from overvoltage at the output.
One approach to control LED brightness is to
apply a PWM signal to the SHDN input of the
SP7648. In this case, the output current will
be equal to the product of V REF /R1 and the
average duty cycle at the SHDN pin. An
optional 10K ? potentiometer may also be
used for dimming the LED current by varying
the potentiometer between low brightness and
full brightness.
If the FB pin is pulled below 150mV the output
will default to 5V defined by an internal
resistor divider.
? 2012 Exar Corporation
10/13
Rev. 2.0.0
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