IS31LT3515-TR

電壓 - 電源 6-40
電流 - 輸出/通道 ±3%
焊接 SnPb
狀態 S=Q3/16
外包裝 Tape on Reel
腳位/封裝 QFN-16
效率(%) 90
温規 Commercial Grade (0C to +70°C)
驅動器類型 Buck, Boost or Buck-Boost
類型 3515
產品類別 LT = Lighting LED Driver
產品系列 31 = Commercial/Industrial Analog
功率晶體管 External
IC代碼 3515 = 3515
包裝選項 blank = Tray or Tube

IS31LT3515-TR 特徵

  • Wide input voltage from 5V to 35V
  • Boost or buck-boost operation
  • Easy dimming: Analog, PWM or PWM converting to analog with an external capacitor
  • Output over voltage protection (OVP)
  • Current mode PWM with an 250kHz operating Internal soft start to avoid inrush current frequency (Typical, RSET = 150kΩ)
  • Output short circuit protection
  • VCC under voltage lock out and over temperature protection (OTP)
  • General industrial high power LED lighting
  • Desk lights and room lighting, street lighting

概觀

The IS31LT3515 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 250mV, the LED current is programmable with one external current sense resistor. The IS31LT3515 is ideal for boost or buck-boost operation. With 250kHz operating frequency (typical, and this frequency can be set up by external resistor), the external inductor and capacitors can be small while maintaining high efficiency. Dimming can be either analog or PWM digital. Input DC voltage from LD pin for analog dimming. Input PWM signal from PWM pin can get either analog dimming or PWM dimming. The IS31LT3515 is available in SOP-16 package and TSSOP-16 package.