MAX16810 Maxim Integrated Products, MAX16810 Datasheet

MAX16810

Manufacturer Part Number

MAX16810

Description

(MAX16809 / MAX16810) Integrated 16-Channel LED Drivers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX16810.pdf (23 pages)

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The MAX16809/MAX16810 are integrated, high-efficien-

cy white or RGB LED drivers. They are designed for

LCD backlighting and other LED lighting applications

with multiple strings of LEDs. The MAX16809/

MAX16810’s current-mode PWM controller regulates

the necessary voltage to the LED array. Depending on

the input voltage and LED voltage range, it can be

used with boost or buck-boost (SEPIC) topologies.

The MAX16809/MAX16810 LED drivers include 16

open-drain, constant-current-sinking LED driver outputs

rated for 36V continuous operation. The LED current-

control circuitry achieves ±3% current matching among

strings and enables paralleling of outputs for LED string

currents higher than 55mA. The output-enable pin is

used for simultaneous PWM dimming of all output chan-

nels. Dimming frequency range is 50Hz to 30kHz and

dimming ratio is up to 5000:1. The constant-current out-

puts are single resistor programmable and the LED cur-

rent can be adjusted up to 55mA per output channel.

The MAX16809/MAX16810 operate either in stand-alone

mode or with a microcontroller (µC) using an industry-

standard, 4-wire serial interface. The MAX16810 includes

a watchdog and circuitry that automatically detects

open-circuit LEDs.

The MAX16809/MAX16810 include overtemperature pro-

tection, operate over the full -40°C to +125°C temperature

range, and are available in a 5mm x 7mm thermally

enhanced, 38-pin TQFN exposed paddle package.

19-0656; Rev 0; 10/06

Pin Configuration appears at end of data sheet.

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.

Switch-Mode Boost and SEPIC Controller

________________________________________________________________ Maxim Integrated Products

Integrated 16-Channel LED Drivers with

General Description

3V TO 5.5V

SET

BYP

V+

PGND

DIN

CLK

DOUT

SET

OUT CS AGND

REF

MAX16809

MAX16810

COMP

RTCT

OUT10

OUT11

OUT12

OUT13

OUT14

OUT15

OUT0

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

OUT9

OUT

♦ 16 Constant-Current Output Channels (Up to

♦ ±3% Current Matching Among Outputs

♦ Paralleling Channels Allows Higher Current per

♦ Outputs Rated for 36V Continuous Voltage

♦ Output-Enable Pin for PWM Dimming (Up to 30kHz)

♦ One Resistor Sets LED Current for All Channels

♦ Wide Dimming Ratio Up to 5000:1

♦ Low Current-Sense Reference (300mV) for High

♦ 8V to 26.5V Input Voltage or Higher with External

♦ Open LED Detection and Watchdog Timer

♦ 4-Wire Serial Interface to Control Individual

+ Denotes lead-free package.

* Future product—contact factory for availability.

** EP = Exposed paddle.

MAX16809ATU+

MAX16810ATU+* -40°C to +125°C 38 TQFN-EP** T3857-1

55mA Each)

LED String

Efficiency

Biasing Devices

(MAX16810)

Output Channels

Typical Operating Circuits continued at end of data sheet.

STAND-ALONE OPERATION

PART

LCD White or RGB LED Backlighting:

Ambient, Mood, and Accent Lighting

LCD TVs, Desktop, and Notebook Panels

Automotive Navigation, Heads-Up,

and Infotainment Displays

Industrial and Medical Displays

Typical Operating Circuits

-40°C to +125°C 38 TQFN-EP** T3857-1

RANGE

Ordering Information

TEMP

LEDs

PIN-

PACKAGE

Applications

Features

CODE

PKG

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