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3 A monolithic step-down current source with dimming capability
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The LED5000 device is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as a precise constant current source with an adjustable current capability up to 3 A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output current level is set by connecting a sensing resistor to the feedback pin. The 200 mV typical RSENSEvoltage drop enhances performance in terms of efficiency. The size of the overall application is minimized thanks to the high switching frequency and its compatibility with ceramic output capacitors. The device is fully protected against overheating, overcurrent and output short-circuit. The LED5000 is available in an HSOP8 package.

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Errata Sheet
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Key Features

  • 5.5 V to 48 V operating input voltage range
  • 850 kHz fixed switching frequency
  • 200 mV typ. current sense voltage drop
  • Buck / buck-boost / floating boost topologies
  • PWM dimming
  • ± 3% output current accuracy overtemperature
  • 200 mΩ typical RDSON
  • Peak current mode architecture
  • Short-circuit protection
  • Compliant with ceramic output capacitors
  • Inhibit for zero current consumption
  • Thermal shutdown

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS9373: 3 A monolithic step-down current source with dimming capability
4.0 1,709 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-ILL063V1 3 A LED driver based on the LED5000 in floating boost topology
STEVAL-ILL056V1 3 A buck LED driver board based on the LED5000
STEVAL-ILL065V1 3 A LED driver based on the LED5000 in BB+ topology
STEVAL-ILL064V1 3 A LED driver based on the LED5000 in BB- topology

Publications and Collaterals


Description Version Size
LED5000 High-performance DC-DC LED driver
936 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
LED5000PHRActivePowerSO-8Tape And Reel-40150_Free Samples.806Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
ANGLIA LiveOrder NowEUROPE20001

(*) 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.