ST Life.augmented

STCF04

High power white LED SuperCap driver with I²C interface
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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

デザイン・リソース

トップ

Technical Documentation

Product Specifications

Description Version Size
pdf
DS8947: High power white LED SuperCap™ driver with I²C interface
3.0 1,509 KB

Application Notes

Description Version Size
pdf
AN3223: Driver for double flash LED with I²C interface
2.1 1,407 KB

User Manual

Description Version Size
pdf
UM1541: STCF04 demonstration kit
1.0 1,119 KB

Publications and Collaterals

Brochure

Description Version Size
pdf
ST’s solutions for mobile devices
1.0.0 2,217 KB

サンプル& 購入

トップ
製品型名 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_Free SamplesDistributor reported inventory date: 2014-07-31
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE34631
Ecopack2-

(*)ユニット当たりの推奨再販価格(米ドル建て)は、あくまで予算的な参考情報としてご利用下さい。現地通貨ベースでのお見積り、価格については 弊社セールスオフィス もしくは 販売代理店 にお問合せ下さい。
(**)弊社ホームページで入手できるMaterial Declaration(材料宣誓書)のフォームは、各パッケージ・タイプで最も一般的に使用されるパッケージに基づいた包括的な文書です。そのため、特定のデバイスについて100%正確ではない可能性があります。特定のデバイスに関する情報については、 弊社セールスオフィス にお問合せ下さい。
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