MAX16835

High-Voltage, 350mA, Adjustable Linear High-Brightness LED Driver

350mA LED Driver Provides 3.5% Current Accuracy for Long LED Strings


Please check latest availability status for a specific part variant.

Description

The MAX16835 current regulator operates from a 6.5V to 40V input voltage range and delivers up to a total of 350mA to one or more strings of high-brightness LEDs (HB LEDs). The output current of the MAX16835 is adjusted by using an external current-sense resistor in series with the LEDs. An enable input allows wide-range "pulsed" dimming. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16835 is well suited for applications requiring high-voltage input and is able to withstand automotive load-dump events up to 40V. An on-board pass element minimizes external components while providing ±3.5% output current accuracy. Additional features include a 5V regulated output and short-circuit and thermal protection.

The MAX16835 is available in a thermally enhanced, 5mm x 5mm, 16-pin TQFN package and is specified over the automotive -40°C to +125°C temperature range.
MAX16835: Simplified Diagram MAX16835: Simplified Diagram Enlarge+

Key Features

  • +6.5V to +40V Operating Range
  • Adjustable LED Current (35mA to 350mA)
  • ±3.5% Output Current Accuracy
  • Integrated Pass Element with Low-Dropout Voltage (0.55V typ)
  • Output Short-Circuit Protection
  • +5V Regulated Output with 4mA Source Capability
  • Thermal Shutdown
  • Differential LED Current Sense
  • High-Voltage Enable Pin for Dimming Interface
  • Low Shutdown Supply Current (35µA typ)
  • Low 200mV Current-Sense Reference Reduces Power Losses
  • Wave-Shaped Edges Reduce Radiated EMI During PWM Dimming
  • Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automotive Interior: Map, Courtesy, and Cluster Lighting
  • Automotive Exterior: Tail Lights and CHMSL
  • Warning Lights for Emergency Vehicles
  • Navigation and Marine Indicators
  • General Illumination
  • Signage, Gasoline Canopies, Beacons

See parametric specs for LED Drivers (82)


Part NumberRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
(A)
PWM Dimming Freq.
(kHz)
Dimming RatioDimming ControlVDROPOUT
(mV)
VCURR_SENSE
(mV)
POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Package/PinsBudgetary
Price
maxmaxmaxtypminmaxmaxmaxSee Notes
MAX16835 Linear101Series0.351200PWM550200146.540338.6
TQFN/16
$1.43 @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.

MAX16836EVKIT: Evaluation Kit for the MAX16836 and MAX16835
Request Reliability Report for: MAX16835 
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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