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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

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

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.

Data Sheet

Download	Rev 1	(PDF, 180kB)
E-Mail

An evaluation kit is available: MAX16803EVKIT

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

Key Specifications:

High Brightness LED Drivers

Part Number

Topology

Device V_IN
(V)

LED Channels

I_LED per Channel
(A)

LED String Volt.
(V)

Internal Pwr. MOSFETs

PWM Dimming Freq.
(kHz)

PWM Dimming Ratio

EV Kit

Budgetary Price

max

min

max

See Notes

MAX16803

Linear

6.5

0.35

38.6

Yes

200

Yes

$1.53 @1k

See All High Brightness LED Drivers (25)

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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Simplified Diagram

Application Notes

Application Note 4537

Level Shifter Helps to Parallel LED Current Drivers

Product Guides

Automotive (PDF)

Displays (PDF)

Reliability Reports

Reliability Report:	AEC-MAX16803ATE+_A.pdf MAX16803ATE+.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX16803ATE+			Active	TQFN;16 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0073 (PDF) Use pkgcode/variation: T1655+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16803ATE+T			Active	TQFN;16 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0073 (PDF) Use pkgcode/variation: T1655+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16803ATE/V+			Active	TQFN;16 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0073 (PDF) Use pkgcode/variation: T1655+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16803ATE/V+T			Active	QFN; Land Pattern: Not Available	-40°C to +125°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Similar Products by Function

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Evaluation Kits

MAX16803EVKIT

Evaluation Kit for the MAX16803

Products with Similar Part Numbers

MAX16803EVKIT	Evaluation Kit for the MAX16803
MAX16803EVKIT+BJT	MAX16803EVKIT+BJT Evaluation Kit+

More Information

New Product Press Release

[ 2006-05-04 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-0532 Rev 1; 2009-09-08
This page last modified: 2009-09-08