IS31LT3910-GRLS2-TR

電壓 - 電源 8-450DC, 100-200AC
電流 - 輸出/通道 500mA±3%
焊接 Lead-free (RoHS Compliant)
狀態 Prod
外包裝 Tape on Reel
腳位/封裝 SOP-8
文件 T8_EB
效率(%) 90
温規 Industrial Grade (-40ºC to 85ºC)
驅動器類型 AC/DC, Step-down
類型 3910
產品類別 LT = Lighting LED Driver
產品系列 31 = Commercial/Industrial Analog
功率晶體管 External
腳位/封裝 GR = SOP
焊料類型 L = Lead-free (RoHS Compliant)
IC代碼 3910 = 3910
Temperature Grade S2 = Industrial temp. (-40°C to 85°C)
包裝選項 TR = Tape & Reel

IS31LT3910-GRLS2-TR 特徵

  • Wide input range from 8VDC to 450DC or
  • 110VAC/220 VAC Temperature compensation to regulate LED current Application from a few mA to more than 1A output
  • Constant off-time operation
  • Linear and PWM dimming capability Switch mode controller for single switch LED drivers
  • Requires few external components for operation
  • DC/DC or AC/DC LED driver applications
  • General purpose constant current source

概觀

The IS31LT3910 is a peak current mode control LED driver IC. The IS31LT3910 operates in constant off- time mode. It allows efficient operation of High Brightness (HB) LEDs with voltage sources ranging from 8VDC to 450DC or 110VAC/220VAC. The IS31LT3910 includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 240mV linear dimming input which can be used both for linear dimming and temperature compensation of the LED current. The IS31LT3910 is ideally suited for buck LED drivers. Since the IS31LT3910 operates in peak current mode control, the controller achieves good output current regulation without the need for any loop compensation. It achieves good PWM dimming response because the response time is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall time.