MAX16823

High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection

Highly Integrated, High-Voltage LED Driver Ideal for Automotive Applications


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Description

The MAX16823 three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of high-brightness LEDs (HB LEDs). Each channel's current is programmable using an external current-sense resistor in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. Wave-shaping circuitry reduces EMI while providing fast turn-on and turn-off times.

The MAX16823 is well suited for automotive applications requiring a high-voltage input and is able to withstand load-dump events up to 45V. On-board pass elements minimize external components while providing ±5% LED current accuracy. Additional features include an active-high, open-drain LEDGOOD output for open LED detection, a +3.4V (±5%) regulated output with 4mA output current capability, short-circuit and thermal protections.

The MAX16823 is available in thermally enhanced 5mm x 5mm, 16-pin TQFN-EP and 16-pin TSSOP-EP packages and is specified over the -40°C to +125°C automotive temperature range.
MAX16823: Block Diagram MAX16823: Block Diagram Enlarge+

Key Features

  • 5.5V to 40V Operating Range
  • Adjustable Constant Output Current (5mA to 100mA and Up to 2A with External BJT)
  • ±5% Output Current Accuracy
  • Open LED Detection
  • Three Independent High-Voltage DIM Inputs
  • Three Integrated Pass Elements with Low Dropout Voltage (0.7V max)
  • Undervoltage Lockout
  • Output Short-Circuit Protection
  • 3.4V Voltage Regulator with 4mA Capability
  • Accurate, Low 203mV Current Sense
  • Overtemperature Shutdown
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Architecture and Industrial Lighting
  • Automotive Exterior: Rear Combination Lights (RCLs), CHMSL
  • Automotive Interior: RGB Ambient Lighting, Cluster Lighting, and LCD Backlighting
  • Emergency Vehicle Warning Lights
  • Navigation and Marine Indicators

See parametric specs for LED Drivers (83)


Part NumberRegulation TopologyMax. No. of LEDsLED ChannelsVIN
(V)
VIN
(V)
minmax
MAX16823 Linear1035.540

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX16823EVKIT: MAX16823 Evaluation Kit

Technical Documents

Reference Schematic 4380 Reference Design for a 3S3P Rear Combination Lamp (RCL) LED Driver
Product Reliability Reports: MAX16823.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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