Rainbow-electronics MAX16800 User Manual download pdf

General 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 dif-

ferential 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 ele-

ment 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.

Applications

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

Features

♦ +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 (12µA 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

MAX16800

High-Voltage, 350mA, Adjustable Linear

High-Brightness LED (HB LED) Driver

________________________________________________________________ Maxim Integrated Products 1

N.C.

OUT

CS+

GND

N.C.

12 11 9

OUT

N.C.

MAX16800

IN CS-

N.C.

TQFN

TOP VIEW

Pin Configuration

Ordering Information

MAX16800

OUT

LEDs

SENSE

0.1µF

+6.5V TO +40V

+5V REG

CS+

0.1µF

CS-

PWM DIMMING

GND

Simplified Diagram

19-3803; Rev 0; 8/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

+Denotes lead-free package.

*EP = Exposed paddle.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX16800ATE

-40°C to +125°C 16 TQFN-EP*

T1655-3

MAX16800ATE+

-40°C to +125°C 16 TQFN-EP*

T1655-3

1 2 3 4 5 6 7 8 9

MAX16800 1

Summary of Contents

Page 1 - MAX16800

General DescriptionThe MAX16800 current regulator operates from a 6.5Vto 40V input voltage range and delivers up to a total of350mA to one or more str

Page 2

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver2 __________________________________________________________________

Page 3

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver____________________________________________________________________

Page 4

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver4 __________________________________________________________________

Page 5

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver____________________________________________________________________

Page 6

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver6 __________________________________________________________________

Page 7

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver____________________________________________________________________

Page 8

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver8 __________________________________________________________________

Page 9

MAX16800High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) DriverMaxim cannot assume responsibility for use of any circuitry other th

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Rainbow-electronics MAX16800 User Manual

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