MAX1916

低压差、恒流、三路白光LED偏置电源

用单节Li+电池驱动3只白光LED,亮度匹配达0.3%


点击查看特定型号的库存状况。

说明

MAX1916低压差、白色LED偏置电源是一款代替传统白色LED设计中简易镇流电阻的高性能芯片。MAX1916用一个电阻设置三只LED的偏置电流,匹配度可达0.3%。MAX1916工作时电源电流仅为40µA,禁止状态下为0.05µA。

与镇流电阻相比,MAX1916具有出色的LED偏置匹配度、电源电压变化时偏置变化极小、压差更低,而且,在一些应用中能够明显提高转换效率。9mA负载时,MAX1916仅需200mV的压差、并保持每只LED的亮度一致。

MAX1916采用节省空间的、6引脚薄型SOT23封装。
MAX1916:典型工作电路 MAX1916:典型工作电路 放大+

关键特性

  • 9mA时200mV压差
  • 最大60mA/LED偏置电流
  • 0.3%的LED电流匹配
  • 简单的LED亮度控制
  • 40µA低电源电流
  • 0.05µA关断电流
  • 2.5V至5.5V输入电压范围
  • 热关断保护
  • 小巧的6引脚、薄型SOT23封装(高1mm)

应用

  • 电池供电应用
  • 数码相机和便携式摄像机
  • 下一代无线手机
  • PDA、掌上电脑与手持终端

请查看具体的参数规格 LED Drivers (81)


Part NumberBattery InputRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
(A)
Dimming ControlVDROPOUT
(mV)
VCURR_SENSE
(mV)
POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Package/PinsBudgetary
Price
maxtypminmaxmaxmaxSee Notes
MAX1916 1-Cell Li+Linear33Parallel0.06Analog10010012.55.50.15
TSOT/6
$1.11 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。
产品可靠性报告: MAX1916.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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