ST Life.augmented


Camera flash with SuperCap™ daughterboard based on the STCF04
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The STEVAL-TLL008V2 demonstration board is a daughterboard working in conjunction with the STEVAL-TLL008V1 and was designed to demonstrate the performance of the STCF04 device, which is a buck-boost converter with an I2C interface dedicated to charging a SuperCap™.

All LEDs with a forward voltage range from 2.5 V to 5 V are compatible with the STCF04. The forward voltage spread of any selected LED must, however, be within this range (2.5 V to 5 V).

It is possible to set the level of the LED current in Flash mode and torch mode by setting the dimming registers.

The maximum level of the LED current in Flash mode can be set by changing the external flash resistor.

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Errata Sheet
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Data Brief

Key Features

  • 1.8 MHz buck-boost converter with 1.2 A peak
  • Current limiting and synchronous rectification
  • Programmable current limit
  • Burst mode operation when output is charged
  • Selectable 200 mA / 400 mA SuperCap™ charging current
  • Input voltage range 2.7 V to 5.5 V
  • Programmable output charging voltage up to 5.5 V
  • Full I2C control
  • Controlled LED current in all modes
  • Shorted LED failure detection and protection
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1652: Camera flash with SuperCap™ daughterboard based on the STCF04
1.0 255 KB

User Manual

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

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-TLL008V2 gerber files
1.0.0 131 KB

Bill of Materials

Description Version Size
1.0.0 68 KB

Schematic Pack

Description Version Size
STEVAL-TLL008V2 schematics
1.0.0 26 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-TLL008V2ActiveSTCF04-Distributor reported inventory date: 2014-04-15
Distributor NameRegionStockMin. order

(*) 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 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.
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