MAX16839

High-Voltage, Linear High-Brightness LED Driver with Open-LED Fault Detect

Industry's Most Cost-Effective Solution for Linear HB LED Driving with Open-LED Detect; Ideal for Automotive Lights


Please check latest availability status for a specific part variant.

Description

The MAX16839 programmable current regulator operates from a 5V to 40V input voltage range and features an open-drain, constant-current-sink output capable of sinking up to 100mA. The MAX16839 is well suited for automotive applications and other applications that require a general-purpose linear LED driver. The device directly withstands automotive load-dump events of up to 45V.

An on-board pass element minimizes external component count while providing ±5% output current accuracy. The MAX16839 includes a dimming input that controls the duty cycle of the output current, allowing a wide LED dimming range. In addition, the dimming input functions as an on/off control of the output current. In multiple LED-string applications, the dimming input synchronizes the LED current-sink turn-on, ensuring simultaneous brightness in LED strings.

Additional features include thermal and open-LED protection and an open-LED fault-detection output. In multiple LED string applications where all FLTS pins are connected together, an open-LED detection in one LED string turns off all the strings simultaneously. Open-LED protection also features fault memory, to avoid LED flashing during subsequent power-up cycles.

The MAX16839 is available in thermally enhanced, 6–pin TDFN-EP and 8-pin SO-EP packages and is specified over the -40°C to +125°C automotive temperature range.
MAX16839: Typical Application Circuit MAX16839: Typical Application Circuit Enlarge+

Key Features

  • 5V to 40V Operating Range
  • Integrated 2Ω Open-Drain Pass Transistor
  • 15mA to 100mA Programmable LED Current
  • PWM Dimming
  • Open-LED Fault Detection
  • Open-LED Fault Event Status Memory
  • LED Open-Fault Detect Latches Off Multiple LED Strings
  • Multichip Synchronized LED Current Sink
  • ±5% LED Current Accuracy
  • -40°C to +125°C Operating Temperature Range
  • Thermal Protection
  • Undervoltage Lockout
  • 6-Pin TDFN-EP and 8-Pin SO-EP Packages

Applications/Uses

  • Automotive Exterior: Turn Signal Light, Brake Light, Tail and Marker Lights
  • Automotive Interior: Cluster and Warning Lights, Dome and Map Lights
  • General Lighting: Signage, LED Lamps
  • Truck, Train, Airplane, and Emergency Car LED Lighting

See parametric specs for LED Drivers (81)


Part NumberRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
(A)
PWM Dimming Freq.
(kHz)
Dimming RatioDimming ControlVCURR_SENSE
(mV)
POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Package/PinsBudgetary
Price
maxmaxmaxminmaxmaxmaxSee Notes
MAX16839 Linear101Series0.110200PWM20345401039.1
SOIC (N)/8
TDFN/6
$0.90 @1k

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.

MAX16839EVKIT: Evaluation Kit for the MAX16839
Product Reliability Reports: MAX16839.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.

Quality Management System >
Environmental Management System >

 
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