ST Life.augmented


Step-up current controller for 4 LEDs based on the STLDC08 driver
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The purpose of the STEVAL-ILL039V2 demonstration board is to provide an example for applications of an LED driver using the step-up controller STLDC08.

The STLDC08 is designed for handheld equipment supplied by AA or AAA batteries and provides a precise constant current starting from a variable input voltage source.

The LED current is set by an external sense resistor inserted between the feedback pin (FB) and GND.

A regulation loop holds the voltage drop at the sense resistor at a constant level (typ. 100 mV).

pdf Please read
Errata Sheet
pdf Download
Data Brief

Key Features

  • Input voltage: 0.8 V to 3.6 V
  • Output: 4 LEDs at ILED= 300 mA
  • Dimming mode with external PWM signal
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1307: Step-up current controller for 4 LEDs based on the STLDC08 driver
1.0 191 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ILL039V2 gerber files
1.0 205 KB

Bill of Materials

Description Version Size
2.1 39 KB

Schematic Pack

Description Version Size
STEVAL-ILL039V2 schematics
1.0 88 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILL039V2ActiveSTLDC08Buy Direct45.32Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA40

(*) 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.