3 A monolithic step-down current source with synchronous rectification

The LED2000 is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as 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 is set connecting a sensing resistor to the feedback pin. The embedded synchronous rectification and the 100 mV typical RSENSEvoltage drop enhance the efficiency performance. The size of the overall application is minimized thanks to the high switching frequency and ceramic output capacitor compatibility. The device is fully protected against thermal overheating, overcurrent and output short-circuit. The LED2000 is available in VFQFPN 4 mm x 4 mm 8-lead, and standard SO8 package.

Key Features

  • 3.0 V to 18 V operating input voltage range
  • 850 kHz fixed switching frequency
  • 100 mV typ. current sense voltage drop
  • PWM dimming
  • ± 7% output current accuracy
  • Synchronous rectification
  • 95 mΩ HS / 69 mΩ LS typical RDS(on)
  • Peak current mode architecture
  • Embedded compensation network
  • Internal current limiting
  • Ceramic output capacitor compliant
  • Thermal shutdown

设计

技术文档

产品规格
Description Version Size
DS9163 DS9163: 3 A monolithic step-down current source with synchronous rectification 4.0 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

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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
LED2000DR Active - - SO-8 Tape And Reel -40 125 NEC EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
LED2000PUR Active - - VFDFPN 8 4x4x1.0 Tape And Reel -40 125 NEC EAR99 MALAYSIA MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY
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(*) 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**
LED2000DR ActiveSO-8IndustrialEcopack2 0 0
LED2000PUR ActiveVFDFPN 8 4x4x1.0IndustrialEcopack2 0 0
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(**) 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.

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