3 A monolithic step-down current source with dimming capability

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 RSENSE voltage 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.

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

设计

技术文档

产品规格
Description Version Size
DS9373 DS9373: 3 A monolithic step-down current source with dimming capability 5.0 2 MB

出版刊物和宣传资料

手册
Description Version Size
Brochure Power management guide 05.2016 7 MB

工具和软件

评估工具
解决方案评估工具
eDesignSuite 支持和社区
精选 产品
相关产品




样片和购买

型号 Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
LED5000PHR Active 1000 0.961 PowerSO-8 Tape And Reel -40 150 NEC EAR99 PHILIPPINES MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY
test

(*) 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

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LED5000PHR ActivePowerSO-8IndustrialEcopack2 0 0
test

(**) 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.

×