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MR16 LED Driver with Integrated Control MOSFET and Deep Dimming

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

产品详情

主要特征

应用/用途

Parametric specs for LED Drivers
VIN (V) (min) 6.5
VIN (V) (max) 26
Max. No. of LEDs 11
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 1
Dimming Control Analog
VCURR_SENSE (mV) 200
POUT (W) 12
LED String Volt. (V) (max) 32
Switching Frequency (kHz) 700
Package/Pins TDFN-CU/8
Budgetary
Price (See Notes)
0.7
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参量

Parametric specs for LED Drivers
VIN (V) (min) 6.5
VIN (V) (max) 26
Max. No. of LEDs 11
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 1
Dimming Control Analog
VCURR_SENSE (mV) 200
POUT (W) 12
LED String Volt. (V) (max) 32
Switching Frequency (kHz) 700
Package/Pins TDFN-CU/8
Budgetary
Price (See Notes)
0.7

主要特征

  • 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

应用/用途

  • 12V MR16 GU5.3 LED照明灯
  • 其它12V LED照明灯(MR11、AR111、12V轨道灯具)

描述

The MAX31840 is an LED driver IC for dimmable 12V MR16, as well as AR111 and other 12V lighting applications. This next-generation MR16 LED driver minimizes BOM count, cost, and board space by integrating a number of value-added functions: deep dimming, bleeder control, constant brightness control, and a boost FET; while significantly improving electronic transformer compatibility with standard trailing-edge dimmers. The MAX31840 is designed for the boost architecture to address 35W and higher-wattage MR16 LED replacement bulbs.

The MAX31840 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 the 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.

The MAX31840 is available in an 8-pin, 3mm x 3mm TDFN enhanced power package and is rated over the -40°C to +125°C operating temperature range.

简化框图

MAX31840: Simplified Block Diagram MAX31840: Simplified Block Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

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