MAX31840

RECOMMENDED FOR NEW DESIGNS

MR16 LED Driver with Integrated Control MOSFET and Deep Dimming

Integrated Solution Enables Dimmable MR16 LED Lamps to Be Compatible with Electronic Transformers

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $0.82

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Part Details

High Integration Saves PCB Space and BOM Costs
- 36V Boost N-Channel DMOS FET
- Bleeder FET Control
- Deep Dimming Control
- Constant Brightness Control
- Internal Compensation
- LED Overvoltage Protection
- Overcurrent and Overtemperature Protection
High-Performance for New LED Dimming Requirements
- Meets California Title 24 Part 6 JA8
- Flickering < 30%
- > 0.9 Power Factor
- Dimming to <1% Brightness, Depending on LEDs
- Tight LED Current Regulation of 2% Typical

Part Models: 2
1ku List Price: Starting From $0.82

Documentation

Data Sheet 1

MAX31840: MR16 LED Driver with Integrated Control MOSFET and Deep Dimming Data Sheet (Rev.0) 09/06/2017

Evaluation Design File 1

MAX31840EVKIT ODB File - Design Files 11/06/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX31840ATA+	8-LFCSP-3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX31840ATA+T	8-LFCSP-3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX31840

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Features and Benefits

Input Voltage Ranges
- 9V AC to 13.2V AC from AC Source
- 6.5V to 13.8V DC or Output of Electronic Transformers
Drives Up to 35V LED Forward Voltage
36V Overvoltage Protection
Up to 13W Output Power
Demonstrates IC Power-Factor Correction
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX31840 evaluation kit (EV kit) demonstrates the MAX31840 LED driver IC used for dimmable 12V MR16 as well as AR111 and other 12V lighting applications. The EV kit is configured in a boost topology that provides an output power of up to 13W for up to 35V LED forward voltage. The IC is designed for the boost architecture to address 35W and 50W MR16 LED replacement bulbs. The EV kit’s typical efficiency 90% at 12V AC and features a power-factor correction of 0.9 (typ).

The EV kit is a fully assembled and tested surface-mount PCB designed and optimized to accommodate an MR16 application form factor. The EV kit is dimmable with most electronic transformers and trailing-edge dimmer combinations. The EV kit includes bleeder and constant power circuits for enhanced electronic transformer performance.

Applications

12V MR16 GU5.3 LED Bulb
Other 12V LED bulbs (MR11, AR111, 12V Track Lighting)

Resources

MAX31840EVKIT ODB File - Design Files
11/6/2023

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