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High power white LED SuperCap driver with I²C interface
  • active 活性

The STCF04 is a dedicated and space optimized high efficiency solution for driving a flash LED module in cameras, phones, PDAs and other handheld devices using the SuperCap technology. It is based on a DC-DC buck-boost converter, which ensures a proper and efficient charging control and monitoring of the SuperCap in the whole battery voltage range. The output current control ensures a good current regulation over the forward voltage spread characteristics of the flash LEDs in Torch and Flash mode operation. The SuperCap charging current is limited to a defined value which avoids overload of the battery. The SuperCap discharge current flows through the LEDs and the external MOSFET which must be chosen according to the desired flash current.

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Errata Sheet
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Key Features

  • Buck-boost converter with 1.5 A peak current limiting and synchronous rectification
  • Burst mode operation when output is charged
  • Input voltage range 2.5 V to 5.5 V
  • Programmable output charging voltage up to 5.5 V
  • Full I²C control
  • Operation modes:
  • Shutdown mode
  • Monitoring mode with NTC and SuperCap monitoring
  • Idle mode
  • Flash mode
  • Torch mode: up to 320 mA
  • Controlled LED current in all modes
  • Soft and hard triggering of Flash, Torch and Picture light modes
  • Torch dimming in 12 exponential steps
  • Flash dimming in 8 steps
  • Active balancing of SuperCap voltage
  • SuperCap status flag
  • Internally or externally timed flash operation
  • Digitally programmable safety timeout in Flash mode
  • Torch mode safety timeout
  • LED overtemperature detection and protection with external NTC resistor
  • Shorted LED failure detection and protection
  • Chip overtemperature detection and protection

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS8947: High power white LED SuperCap™ driver with I²C interface
3.0 1,509 KB

Application Notes

描述 版本 大小
AN3223: Driver for double flash LED with I²C interface
2.1 1,407 KB

Publications and Collaterals


描述 版本 大小
ST’s solutions for mobile devices
3.2 3,176 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STCF04TBRActiveuTFBGA 25 3x3x1.1Tape And Reel-4085_-No availability reported, please contact our Sales officeEcopack2-

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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