LTM8040

PRODUCTION

36V, 1A μModule (Power Module) LED Driver and Current Source

Data Sheet Product Selection Table
Viewing:

Overview

  • True Color PWM™ Delivers Constant Color with 250:1 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 LED Cathode Connection
  • Small Footprint (15mm × 9mm × 4.32mm) Surface Mount LGA Package

The LTM8040 is a fixed frequency 1A step-down DC/DC μModule® (power module) regulator 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 voltage range of 2.5V to 13V. Unique PWM circuitry allows a dimming range of 250:1, avoiding the color shift normally associated with LED current dimming.

With its wide input range of 4V to 36V, the LTM8040 regulates 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, compact (15mm × 9mm × 4.32mm) molded Land Grid Array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8040 is Pb-free and RoHS compliant.

Applications

  • Automotive and Avionic Lighting
  • Architectural Detail Lighting
  • Display Backlighting
  • Constant Current Sources
LTM8040
36V, 1A μModule (Power Module) LED Driver and Current Source
1A μModule LED Driver Efficiency Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Battery Charger ICs 1
LTM8026
RECOMMENDED FOR NEW DESIGNS 36VIN, 5A CVCC Step-Down μModule (Power Module) Regulator
LED Drivers 1
LTM8042
LTM8042-1
μModule (Power Module) Boost LED Driver and Current Source
Temperature Sensors 1
LTC2995
PRODUCTION Temperature Sensor and Dual Voltage Monitor with Alert Outputs
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTM8040
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1274A

LTM8040EV Demo Board | µModule Buck LED Driver, 4V ≤ VIN ≤ 36V, VLED up to 13V @ 1A

Buy Now View Details

Product Details

Demo circuit DC1274A features the LTM8040 36V, 1A step-down constant current μModule® LED driver. The demonstration circuit is designed to drive a single LED or string of LEDs at up to 1A from a wide input voltage range of 4V to 36V. The maximum LED string voltage is 13V and the minimum voltage varies depending upon the BIAS pin supply arrangement.


 
DC1274A
LTM8040EV Demo Board | µModule Buck LED Driver, 4V ≤ VIN ≤ 36V, VLED up to 13V @ 1A
DC1274A Demo Board DC1274A Demo Board DC1274A Demo Board DC1274A Demo Board DC1274A - Schematic

Latest Discussions

No discussions on LTM8040 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed