The SSL2115x is a series of low cost LED driver IC's. It is designed to drive LED devices typically in flyback configurations. The devices include a high-voltage power switch and a circuit enabling start-up directly from the rectified mains voltage. It has a good controlled output current.

• Suitable for applications up to 5 W (SSL21151) or 10 W (SSL21153) mains power
• Compact solution with a small form factor and low component count
• Ease of integration
• Primary side sensing (no optocoupler required)
• True current source behavior:
  • LED current independent of mains voltage, LED voltage and temperature variation
  • LED current accuracy (10 %)
  • Line regulation: ±3 % at 230 V ±10 %
  • Load regulation: ±3 % between 0.5 x Umax and 0.85 x Umax
• Efficiency up to 86 % depending on the application
• Internal protections::
  • OverTemperature Protection (OTP)
  • LED short protection (IOUT (0 V - V maximum) at a constant level)
  • LED open protection
  • UnderVoltage LockOut (UVLO)
• Internal supply voltage generation enabling start-up from the rectified mains voltage
• SO7 package

• SSL retrofit lamps (small-sized light bulbs or LED spots)
• LED module, mains AC/DC converter (down-lights)
• LED strings (retail displays)