LYTSwitch-4 LED Driver ICs

Power Integrations' LYTSwitch-4 LED driver ICs deliver excellent dimming for consumer bulb applications

Image of Power Integrations' LYTSwitch-4 LED Driver ICsPower Integrations' LYTSwitch family enables offline LED drivers with high power factor, which easily meet international requirements for THD and harmonics. Tightly-regulated output current, with better than ±5% CC tolerance, enables efficiency of up to 92% in typical applications.

The LYTSwitch family provides excellent turn-on characteristics for leading-edge and trailing-edge TRIAC dimming applications. This results in drivers with a wide dimming range and fast start-up, even when turning-on from a low conduction angle. Additionally, the device offers large dimming ratio and low "pop-on" current.

LYTSwitch ICs are highly integrated, employing a primary-side control technique that eliminates the optoisolator and reduces component count. This allows the use of low-cost, single-sided printed circuit boards. Combining PFC and CC functions into a single-stage also helps reduce cost and increase efficiency. The 132 kHz switching frequency permits the use of small, low-cost magnetics.

LED drivers using the LYTSwitch family do not use primary-side aluminum electrolytic bulk capacitors. This means greatly extended driver lifetime, especially in bulb and other high temperature applications.

Features
  • Better than ±5% Constant Current (CC) regulation
  • Power Factor Correction (PFC) for low-line applications
  • Easily meets EN61000-3-2
    • Less than 10% THD in optimized designs
  • 132 kHz switching frequency for small magnetics
  • TRIAC dimming and non-dimming options
  • Fast start-up
    • <250 ms at full brightness
    • <1s at 10% brightness
  • High power factor >0.9
  • Up to 92% efficient

LYTSwitch-4 LED Driver ICs

ImageManufacturer Part NumberDescriptionAvailable Quantity
LYT4313E datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4313EIC LED DRIVER OFFL DIM ESIP-7C1366 - Immediate
LYT4313E product page link
LYT4328E3 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4328E3IC LED DRIVER OFFL DIM ESIP-7C188 - Immediate
LYT4328E3 product page link
RDK-347 datasheet linkKIT REF DESIGN LYTSWITCHRDK-347KIT REF DESIGN LYTSWITCH2 - Immediate
RDK-347 product page link
LYT4315E2 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4315E2IC LED DRIVER OFFL DIM ESIP-7C280 - Immediate
LYT4315E2 product page link
LYT4211E2 datasheet linkIC LED DRIVER OFFL 1.37A 7-ESIPLYT4211E2IC LED DRIVER OFFL 1.37A 7-ESIP359 - Immediate
LYT4211E2 product page link
LYT4311E2 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4311E2IC LED DRIVER OFFL DIM ESIP-7C206 - Immediate
LYT4311E2 product page link
LYT4212E2 datasheet linkIC LED DRIVER OFFL 2.08A ESIP-7CLYT4212E2IC LED DRIVER OFFL 2.08A ESIP-7C823 - Immediate
LYT4212E2 product page link
LYT4312E datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4312EIC LED DRIVER OFFL DIM ESIP-7C353 - Immediate
LYT4312E product page link
LYT4213E2 datasheet linkIC LED DRIVER OFFL 2.72A ESIP-7CLYT4213E2IC LED DRIVER OFFL 2.72A ESIP-7C349 - Immediate
LYT4213E2 product page link
LYT4215E2 datasheet linkIC LED DRIVER OFFL 5.44A ESIP-7CLYT4215E2IC LED DRIVER OFFL 5.44A ESIP-7C302 - Immediate
LYT4215E2 product page link
LYT4216E2 datasheet linkIC LED DRIVER OFFL 6.88A ESIP-7CLYT4216E2IC LED DRIVER OFFL 6.88A ESIP-7C250 - Immediate
LYT4216E2 product page link
LYT4316E2 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4316E2IC LED DRIVER OFFL DIM ESIP-7C0LYT4316E2 product page link
LYT4227E3 datasheet linkIC LED DRIVER OFFL 7.33A ESIP-7CLYT4227E3IC LED DRIVER OFFL 7.33A ESIP-7C0LYT4227E3 product page link
LYT4327E3 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4327E3IC LED DRIVER OFFL DIM ESIP-7C0LYT4327E3 product page link
LYT4228E3 datasheet linkIC LED DRIVER OFFLINE 9A ESIP-7CLYT4228E3IC LED DRIVER OFFLINE 9A ESIP-7C0LYT4228E3 product page link
LYT4314E2 datasheet linkIC LED DRIVER OFFL DIM ESIP-7CLYT4314E2IC LED DRIVER OFFL DIM ESIP-7C22 - Immediate
LYT4314E2 product page link
LYT4211L datasheet linkIC LED DRIVER OFFL 1.37A ESIP-7FLYT4211LIC LED DRIVER OFFL 1.37A ESIP-7F0LYT4211L product page link
LYT4212L datasheet linkIC LED DRIVER OFFL 2.08A ESIP-7FLYT4212LIC LED DRIVER OFFL 2.08A ESIP-7F0LYT4212L product page link
LYT4213L datasheet linkIC LED DRIVER OFFL 2.72A ESIP-7FLYT4213LIC LED DRIVER OFFL 2.72A ESIP-7F0LYT4213L product page link
LYT4214L datasheet linkIC LED DRIVER OFFL 4.08A ESIP-7FLYT4214LIC LED DRIVER OFFL 4.08A ESIP-7F0LYT4214L product page link
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Published: 2013-03-29