MAX16806 Maxim Integrated Products, MAX16806 Datasheet

MAX16806

Manufacturer Part Number

MAX16806

Description

(MAX16805 / MAX16806) EEPROM-Programmable

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX16806.pdf (19 pages)

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The MAX16805/MAX16806 LED drivers eliminate the

need for microcontrollers or switch-mode converters for

automotive interior dome, map, and courtesy light

applications. An EEPROM-programmable LED current-

sense reference simplifies production by using one

sense resistor to set the LED current for all LED bins. A

dual-mode DIM pin and an on-board 200Hz ramp gen-

erator allow for PWM dimming with an analog or PWM

control signal. The analog control signal at dimming

input DIM allows for the “theater dimming” effect to be

implemented. Fast turn-on/-off times ensure a wide-

range PWM operation, while waveshaping circuitry min-

imizes EMI. EEPROM-programmable LED current

foldback makes it possible to operate at a high input

voltage, while saving the cost and space associated

with having a large heatsink. The MAX16806 works with

an external thermal sensor to maintain maximum LED

junction temperature by folding back the LED current.

The thermal foldback temperature knee and slope are

EEPROM programmable. The MAX16806 SW pin sup-

plies necessary wetting current to a momentary switch.

19-0625; Rev 0; 8/06

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.

EEPROM-Programmable, High-Voltage, 350mA

Automotive Interior: Map, Dome, and Courtesy

Lighting

Automotive Exterior:

Emergency Vehicle Warning Lights

Navigation and Marine Indicators

SERIAL CLOCK

SERIAL DATA

Rear Combination Light (RCL)

Daytime Running Light (DRL)

Adaptive Front Light

0.1µF

+5.5V TO +40V

________________________________________________________________ Maxim Integrated Products

ANALOG CONTROL PWM DIMMING

SCL

SDA

DIM

LED Drivers with LED Current Foldback

General Description

MAX16805

GND

OUT

CS+

CS-

Applications

+5V REG

LED

0.1µF

LEDs

SENSE

† MAX6613 THERMAL SENSOR IS OPTIONAL.

MAX6613 †

o EEPROM or I

o On-Board 200Hz Ramp Generator Eliminates the

o Flexible Analog or PWM Control for PWM or

o Wetting Current and Debounce for Momentary

o 5.5V to 40V Input with Up to 39V Output Capability

o 35mA to 350mA Adjustable LED Current

o Waveshaping Minimizes EMI During Dimming

o Output Short-Circuit and Overtemperature

o -40°C to +125°C Operating Temperature Range

+ Denotes lead-free package.

** EP = Exposed pad.

Pin Configurations appear at end of data sheet.

* Purchase of I

Inc. or one of its sublicensed Associated Companies, conveys

a license under the Philips I

ponents in an I

to the I

PWM DIMMING

MAX16805ATP+ -40°C to +125°C 20 TQFN-EP** T2055M-5

MAX16806ATP+ -40°C to +125°C 20 TQFN-EP** T2055M-5

GND

Need for µC PWM Signal

Theater Dimming

Switch (MAX16806)

Protection

LED Current Foldback for High Input Voltage

LED Current Reference

LED Current Thermal Foldback (MAX16806)

PART

OUT

0.1µF

C Standard Specification as defined by Philips.

+5.5V TO +40V

C components from Maxim Integrated Products,

Typical Operating Circuits

C system, provided that the system conforms

TEMP RANGE

C* Dynamically Programmable:

TFN/SDA

TFP/SCL

DIM

PWM CONTROL DIMMING

Ordering Information

MAX16806

GND

C Patent Rights to use these com-

OUT

CS+

PACKAGE

CS-

+5V REG

LED

0.1µF

Features

LEDs

SENSE

CODE

PKG

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