MAX16803

High-Voltage, 350mA, High-Brightness LED Driver with PWM Dimming and 5V Regulator

Smallest, High-Voltage, 350mA High-Brightness LED Driver Simplifies LED Lighting Applications, Minimizes External Part Counts, and Saves Cost and Space


Please check latest availability status for a specific part variant.

Description

The MAX16803 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 MAX16803 is adjusted by using an external current-sense resistor in series with the LEDs. A dimming input allows widerange "pulsed" PWM operation. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16803 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 MAX16803 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.

The MAX16836 is a newer and more cost effective product; except for different PWM dimming current slew rates, it provides the same performance and is pin-to-pin compatible with the MAX16803.
MAX16803: Simplified Diagram MAX16803: Simplified Diagram Enlarge+

Key Features

  • +6.5V to +40V Operating Range
  • Adjustable LED Current (35mA to 350mA)
  • ±3.5% LED Current Accuracy
  • High-Voltage DIM Pin for Dimming Interface
  • Integrated Pass Element with Low-Dropout Voltage (0.5V typ)
  • +5V Regulated Output with 4mA Source Capability
  • Parallel Operation for LED Current > 350mA
  • Differential LED Current Sense
  • Low Shutdown Supply Current (12µA typ)
  • Low 204mV Current-Sense Reference Reduces Power Losses
  • Wave-Shaped Edges Reduce Radiated EMI During PWM Dimming
  • Thermal Shutdown
  • Output Short-Circuit Protection
  • Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automotive Exterior: Rear Combination Lights (RCL)
  • Automotive Interior: Map, Courtesy, and Cluster Lighting
  • Emergency Vehicle Warning Lights
  • General Lighting
  • Navigation and Marine Indicators
  • Signage, Gasoline Canopies, Beacons

See parametric specs for LED Drivers (81)


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
MAX16803 Linear101Series0.352200PWM500198146.540338.6
TQFN/16
$3.04 @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.

MAX16803EVKIT: Evaluation Kit for the MAX16803

Technical Documents

App Note 4537 Level Shifter Helps to Parallel LED Current Drivers
Request Reliability Report for: MAX16803 
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 >

 
Status:
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