MAX16800 High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver

Description

The MAX16800 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. The output current of the MAX16800 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 MAX16800 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 MAX16800 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 MAX16835 is a newer and more cost effective product that provides the same performance and is pin-to-pin compatible with the MAX16800.

Key Features

Applications/Uses

+6.5V to +40V Operating Range
Adjustable Level (35mA to 350mA)
±3.5% Output Current Accuracy
Integrated Pass Element with Low-Dropout Voltage (0.5V 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 (12&µA typ)
Low 204mV Current-Sense Reference Reduces Power Losses
Wave-Shaped Soft 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

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

Key Specifications: High Brightness LED Drivers

Part Number

Topology

V_IN
(V)

Extended V_IN with External Bias

LED Channels

I_LED per Channel
(A)

LED String Volt.

Internal Pwr. MOSFETs

PWM Dimming Freq.
(kHz)

PWM Dimming Ratio

EV Kit

Price

min

max

See Notes

MAX16800

Linear Current Regulator

6.5

0.35

Vin-1.4V

Yes

1:30

$0.99 @1k

See All High Brightness LED Drivers (26)

Key Specifications: White LED Drivers

Part Number

Topology

LEDs

Config.

Dimming Control

V_DROPOUT
(mV)

V_{CURR_SENSE}
(mV)

P_OUT
(W)

I_LED
(mA)

V_IN
(V)

I_CC
(mA)

V_OUT
(V)

Package/Pins

Price

max num. of

typ

max

min

max

See Notes

MAX16800

Linear Current Regulator

100

Series-Parallel

PWM

0.5

200

350

6.5

3.5

TQFN/16

$0.99 @1k

See All White LED Drivers (46)

Diagram

Simplified Diagram

Application Notes

Application Note 1883: LEDs Are Still Popular (and Improving) after All These Years - MAX16800
Application Note 3640: MAX16800 Test Board - MAX16800
Application Note 3980: Power Supplies for Next-Generation Automotive Lighting - MAX16800

Design Guides

Automotive (PDF)

Reliability Reports

Reliability Report: AEC-MAX16800ATE+_A.pdf MAX16800ATE+.pdf

Show FIT data for:

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-6 of 6

MAX16800 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX16800ATE/V+T

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

MAX16800ATE/V+

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

MAX16800ATE

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: No
Materials Analysis

MAX16800ATE+

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

MAX16800ATE+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

MAX16800ATE-T

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

More Information

Topmark Coding: MAX16800

New Product Press Release 2005-08-29

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See All High Brightness LED Drivers (26 Products)

See All White LED Drivers (46 Products)

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Description
Key Features
Applications/Uses
Key Specifications
Diagram

Data Sheet
Application Notes
Design Guides
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Reliability Reports
Software/Models
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Samples
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Document Ref.: 19-3803; Rev 1; 2009-08-12
This page last modified: 2009-08-12