- Quick Start Guide
- PCB Assembly/Reflow & Packaging
- Application Notes
- Simulation Tools
- Reliability Report
- Materials Declaration & RoHS Compliance
- Purchase Demo Board
LTM8042/LTM8042-1 - μModule (Power Module) Boost LED Driver and Current Source
Features
- True Color PWM™ with 3000:1 Dimming Ratio
- Operates in Boost, Buck Mode or Buck-Boost Mode
- Wide Input Voltage Range:
Operation from 3V to 30V
Transient Protection to 40V - Gate Driver for Optional PWM Dimming with P-channel MOSFET
- Adjustable Frequency: 250kHz to 2MHz
- Constant-Current and Constant-Voltage Regulation
- Low Shutdown Current: <1μA
- RoHS Compliant Package with Gold Pad Finish
- Tiny, Low Profile (9mm × 15mm × 2.82mm) Surface Mount LGA Package
Typical Application
Description
The LTM8042 is a complete μModule (power module) Boost LED Driver specifically designed to drive LEDs up to 1A, while the LTM8042-1 drives up to 350mA. It combines a boost power topology with a unique current loop to operate as a constant-current source. The PWM input provides as much as 3000:1 LED dimming, while 10:1 analog dimming can be accomplished by a single resistor or analog voltage applied to the CTL pin. As with any boost topology, the LTM8042/LTM8042-1 has an uninterrupted current path between its input and output and is thus intolerant to a short-circuit or overload from the output to ground.
The LTM8042/LTM8042-1 is packaged in a thermally enhanced, compact overmolded land grid array (LGA) package. The LTM8042/LTM8042-1 is Pb-free and a RoHS compliant.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTM8042EV-1#PBF | 15mm x 9mm x 2.82mm LGA | LGA | E | 05-08-1859 | Yes |
| LTM8042EV#PBF | 15mm x 9mm x 2.82mm LGA | LGA | E | 05-08-1859 | Yes |
| LTM8042IV-1#PBF | 15mm x 9mm x 2.82mm LGA | LGA | I | 05-08-1859 | Yes |
| LTM8042IV#PBF | 15mm x 9mm x 2.82mm LGA | LGA | I | 05-08-1859 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTM8042EV-1#PBF | 15mm x 9mm x 2.82mm LGA | E | $12.51 | $8.76 | Yes | |
| LTM8042EV#PBF | 15mm x 9mm x 2.82mm LGA | E | $12.51 | $8.76 | Yes | |
| LTM8042IV-1#PBF | 15mm x 9mm x 2.82mm LGA | I | $13.39 | $9.37 | Yes | |
| LTM8042IV#PBF | 15mm x 9mm x 2.82mm LGA | I | $13.39 | $9.37 | Yes | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1511A-A | LTM8042EV Demo Board | uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 1A | $65.00 | |
| DC1511A-B | LTM8042EV-1 Demo Board | uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 350mA | $65.00 | |
| Buy Now | |||
Applications
- Display Backlighting
- Automotive and Avionic Lighting
- Illumination
- Scanners
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Product Notifications
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu
To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Models for the following parts are available in LTspice:
LTM8042
LTM8042-1
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
