Taiwan Semiconductor TSCR4x Linear LED Drivers

Taiwan Semiconductor TSCR4x Linear LED Drivers are high-side Constant Current Regulators (CCRs) that are designed for driving LEDs in strings. These drivers feature continuous output current up to 65mA with an external resistor. They reduce the current at increasing temperature to self-protect and maintain a good temperature coefficient with respect to the output current. The output current at higher temperatures is the result of the negative temperature coefficient of -0.07%/°C of the LED driver. Taiwan Semiconductor TSCR4x LED drivers are ideally used in automotive lighting, emergency lighting, advertising, signage, decorative lighting, retail lighting in fridges, and vending machines.

Features

  • LED driver current presets
    • TSCR400: 0.1mA
    • TSCR420 and TSCR421: 10mA
    • TSCR402: 20mA
  • Continuous output current up to 300mA with an external resistor
  • Easy paralleling of drivers to increase current
  • Supply voltage up to 40V
  • Good temperature coefficient vs. output current
  • SOT-26 package
  • AEC-Q100 qualified
    • Device temperature grade 1: -40°C to +125°C temperature range
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C6
  • Compliant to RoHS directive 2011/65/EU and in accordance to WEEE 2002/96/EC
  • Halogen free, according to IEC 61249-2-21

Applications

  • Automotive lighting
  • Architectural LED lighting
  • Emergency lighting
  • Signage
  • Advertising
  • Decorative lighting
  • Retail lighting in fridges
  • Vending machines

Typical Application Circuit

Application Circuit Diagram - Taiwan Semiconductor TSCR4x Linear LED Drivers

Functional Block Diagram

Block Diagram - Taiwan Semiconductor TSCR4x Linear LED Drivers

Videos

Taiwan Semiconductor TSCR4x Linear LED Drivers