MAX31840ATA+

The MAX31840ATA+ is a MR16 LED driver with integrated control MOSFET and deep dimming in 8 pin TDFN-EP package. It is an LED driver IC for dimmable 12V MR16 as well as AR111 and other 12V lighting applications. It minimizes BOM count, cost and board space by integrating a number of value added functions such as deep dimming, bleeder control, constant brightness control and boost FET while significantly improving electronic transformer compatibility with standard trailing edge dimmers. It is a high end MR16 LED driver that incorporates a proprietary circuit that enables deep dimming down to 1%, an improvement over others that only dim down to 10% or 20%. An integrated bleeder and constant brightness controller enables MAX31840 to shine, flicker free with a broad range of electronic transformers. An optimized compensation circuit and boost FET are integrated to further reduce BOM and board space, simplifying design and saving cost.

• High integration saves PCB space and BOM costs
• 36V boost N-channel DMOS FET, bleeder FET control, flickering <lt/> 30%, <gt/> 0.9 power factor
• Deep dimming control, constant brightness control, internal compensation
• LED overvoltage protection, overcurrent and overtemperature protection
• High performance for new LED dimming requirements
• 700KHz switching frequency, meets California title 24 part 6 JA8
• Designed for boost architecture to address 35W and higher wattage MR16 LED replacement bulbs
• Tight LED current regulation of 2% typical and dimming to less than 1% brightness depending on LEDs
• 6.5V to 26V operating voltage range, 1mA IN supply current (when MOSFET fully on, VCS = 0)
• Operating temperature range from -40°C to +125°C
• 12V MR16 GU5.3 LED Bulb; Other 12V LED bulbs (MR11, AR111, 12V Track Lighting)

Applications

Power Management, LED Lighting

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party