ST Life.augmented

STCF04

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

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.

pdf Please read
Errata Sheet
pdf Download
Datasheet

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

Design Resources

Top

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

Sample & Buy

Top
Part Number 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-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Feedback Form
Customer Feedback