Digital controllers for lighting and power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL, DALI

The STLUX™ family of controllers is a part of the STMicroelectronics®digital devices tailored for lighting and power conversion applications. The STLUX controllers have been successfully integrated in a wide range of architectures and applications, starting from simple buck converters for driving multiple LED strings, boost for power factor corrections, half-bridge resonant converters for high power dimmable LED strings and up to full bridge controllers for HID lamp ballasts.

Key Features

  • Up to 6 programmable PWM generators (SMEDs - “State Machine Event Driven”)
    • 10 ns event detection and reaction
    • Max.1.3 ns PWM resolution
    • Single, coupled and two coupled operational modes
    • Up to 3 internal/external events per SMED
  • DALI (digital addressable lighting interface)
    • Interrupt driven hardware encoder
    • Bus frequency: 1.2, 2.4 or 4.8 kHz
    • IEC 60929 and IEC 62386 compliant plus 24-bit frame extension
    • Configurable noise rejection filter
    • Reverse polarity on Tx/Rx lines
  • 4 analog comparators
    • 4 internal 4-bit references
    • 1 external reference
    • Less than 50 ns propagation time
    • Continuous comparison cycle
  • ADCs (up to 8 channels)
    • 10-bit precision, with operational amplifier to extend resolution to 12-bit equivalent
    • Sequencer functionality
    • Input impedance: 1 MΩ
    • Configurable gain value: x1 and x4
  • Integrated microcontroller
    • Advanced STM8® core with Harvard architecture and 3-stage pipeline
    • Max. fCPU : 16 MHz
    • Multiple low power modes
  • Memories
    • Flash and E2 PROM with read while write (RWW) and error correction code (ECC)
    • Program memory: 32 Kbytes Flash; data retention 15 years at 85 °C after 10 kcycles at 25 °C
    • Data memory: 1 Kbyte true data E2 PROM; data retention:15 years at 85 °C after 100 kcycles at 85 °C
    • RAM: 2 Kbytes
  • Clock management
    • Internal 96 MHz PLL
    • Low power oscillator circuit for external crystal resonator or direct clock input
    • Internal, user-trimmable 16 MHz RC and low power 153.6 kHz RC oscillators
    • Clock security system with clock monitor
  • Basic peripherals
    • System and auxiliary timers
    • IWDG/WWDG watchdog, AWU, ITC
  • I/O
    • GPIO with highly robust design, immune against current injection
    • Fast digital input DIGIN, with configurable pull-up
  • Communication interfaces
    • UART asynchronous with SW flow control and boot loader support
    • I2 C master/slave fast-slow speed rate
  • Operating temperature: -40 °C up to 105 °C


Technical Documentation

Product Specifications
Description Version Size
DS11056 DS11056: Digital controllers for lighting and power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL, DALI 1.0 3 MB
Application Notes
Description Version Size
AN4461 AN4461: 100 W LED street lighting application using STLUX385A 3.0 3 MB
AN4656 AN4656: Bootloading procedure for STLUX™ and STNRG™ digital controllers 2.0 635 KB
User Manuals
Description Version Size
UM1763 UM1763: Description of STLUX385A examples kit 1.0 418 KB
UM1753 UM1753: Description of STLUX385A peripheral library 1.0 267 KB
UM2068 UM2068: Examples kit for STLUX™ and STNRG digital controllers 1.0 1 MB
UM2005 UM2005: General purpose GUI r2.0 for STLUX™ and STNRG digital controllers 1.1 2 MB
UM1981 UM1981: SMED configurator v2.0 for STLUX™ and STNRG digital controllers 1.0 3 MB
UM1792 UM1792: STLUX385A development environment 1.0 1 MB
UM1760 UM1760: STLUX™ SMED configurator 1.0 1.1 2 MB
UM2001 UM2001: Standard peripheral library for STLUX™ and STNRG digital controllers 1.0 703 KB
Reference Manuals
Description Version Size
RM0380 RM0380: STLUX and STNRG digital controllers designed for lighting and conversion 1.0 4 MB
Design Notes & Tips
Description Version Size
DN0028 DN0028: STEVAL-ILL066V1 - 90Vac-305Vac input 1.0 583 KB
DT0044 DT0044: STLUX385: An analog diagnostic output system for the STLUX 1.0 414 KB

Publications and Collaterals

Description Version Size
STLUX385A 100 W LED street lighting 1.0 2 MB
STLUX: Intelligent lighting made easy 07.2017 280 KB
Description Version Size
Brochure Power management guide 09.2017 3 MB

Tools and Software

Development Tools
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Evaluation Tools
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Support & Community
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Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STLUX385A ActiveTSSOP 38IndustrialEcopack2
STLUX385ATR ActiveTSSOP 38IndustrialEcopack2

(**) 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.