IS31LT3350-V1-TR

IOUT 750mA±5%
Status Prod
Vdd(V) 6-40
Pkg Pin SOT89-5, SOT23-5
Document 3CH_EB
Driver Type DC/DC, Step-down
Efficiency(%) 95
Power Transistor Built-in
Product Family 31 = Commercial/Industrial Analog
Part Number 3350 = 3350
Product Type LT = Lighting LED Driver
Package option blank = Tray or Tube
Outpack Tape on Reel

IS31LT3350-V1-TR Features

  • Simple low parts count
  • Wide input voltage range: 6V to 40V
  • Up to 750mA output current(SOT89-5 Internal 40V power switch package)
  • High efficiency (up to 95% )
  • Typical 1200:1 dimming ratio
  • Typical 5% output current accuracy
  • Single pin on/off and brightness control using DC voltage or PWM
  • Up to 1MHz switching frequency Inherent open-circuit LED protection
  • Thermal shutdown protection circuitry
  • Two packages available for different current
  • Low voltage halogen replacement LEDs
  • Automotive lighting
  • Low voltage industrial lighting
  • LED back-up lighting

Overview

The IS31LT3350 is a continuous mode inductive step-down converter, designed for driving a single LED or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The chip operates from an input supply between 6V and 40V and provides an externally adjustable output current of up to 750mA. Depending upon supply voltage and external components, this can provide up to 30 watts of output power. The IS31LT3350 includes an integrated output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current. Output current can be adjusted linearly by applying an external control signal to the ADJ pin. The ADJ pin will accept either a DC voltage or a PWM waveform. This will provide either a continuous or a gated output current. Applying a voltage of 0.2V or lower to the ADJ pin turns the output off and switches the chip into a low current standby state. The chip is assembled in SOT23-5 and SOT89-5 package. SOT23-5 is available for 350mA output current application. SOT89-5 is available for 750mA output current application.

 

Related Part Number(s)

Description Stock Qty Available Qty Description Stock Qty Available Qty
IS31LT3350-V1 IS31LT3350-V2
IS31LT3350 IS31LT3350-V2-TR
IS31LT3350-V1SDLS2-TR 2,500 IS31LT3350-V2SDLS2-TR
IS31LT3350-V1STLS2-TR IS31LT3350-V2STLS2-TR