LTM8040EV-PBF LINER [Linear Technology], LTM8040EV-PBF Datasheet

LTM8040EV-PBF

Manufacturer Part Number

LTM8040EV-PBF

Description

36V, 1A ?Module LED Driver

Manufacturer

LINER [Linear Technology]

Datasheet

1.LTM8040EV-PBF.pdf (16 pages)

Current page: 1 of 16
Download datasheet (218Kb)

FEATURES

APPLICATIONS

TYPICAL APPLICATION

μModule is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

*RUNNING VOLTAGE. SEE APPLICATION INFORMATION

4V TO 36V

FOR START-UP REQUIREMENTS

True Color PWM™ Delivers Constant Color with

400:1 Dimming Ratio

Wide Input Range: 4V to 36V

Up to 1A LED Current

Adjustable Control of LED Current

High Output Current Accuracy is Maintained Over a

Wide Range from 35mA to 1A

Open LED and Short-Circuit Protection

Grounded Cathode Connection

Small Footprint, Low Proﬁ le (15mm × 9mm × 2.82mm)

Surface Mount LGA Package

Automotive and Avionic Lighting

Architectural Detail Lighting

Display Backlighting

Constant Current Sources

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

1μF

215k

650kHz

1A LED Driver μModule

SHDN

ADJ

PWM

LTM8040

GND

LPWR

LEDA

BIAS

8040 TA01

TWO WHITE LEDs

6V TO 9V

DESCRIPTION

The LTM

μModule™ designed to operate as a constant current

source. Internal circuitry monitors the output current to

provide accurate current regulation, which is ideal for

driving high current LEDs. High output current accuracy

is maintained over a wide current range, from 35mA to

1A, allowing a wide dimming range over an output volt-

age range of 2.4V to 13V. Unique PWM circuitry allows a

dimming range of 400:1, avoiding the color shift normally

associated with LED current dimming.

With its wide input range of 4V to 36V, the LTM8040 regu-

lates a broad array of power sources, from 4-cell batteries

and 5V logic rails to unregulated wall transformers, lead

acid batteries and distributed power supplies.

The LTM8040 is packaged in a thermally enhanced, com-

pact (15mm × 9mm) and low proﬁ le (2.82mm) molded

Land Grid Array (LGA) package suitable for automated

assembly by standard surface mount equipment. The

LTM8040 is Pb-free and RoHS compliant.

Electrical Specifications Subject to Change

8040 is a ﬁ xed frequency 1A step-down DC/DC

100

36V, 1A µModule LED

3.3V AT 1A LEDs

= 12V

200

OUTPUT CURRENT (mA)

Efﬁ ciency

400

600

800

8040 TA01b

LTM8040

1000

Driver

8040p

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