LTM4604 - Low Voltage, 4A DC/DC μModule® Regulator with Tracking
Features
- Complete Standalone Power Supply
- Wide Input Voltage Range: 2.375V to 5.5V
- 4A DC, 5A Peak Output Current
- 0.8V to 5V Output
- Output Voltage Tracking
- ±2% Total DC Error
- UltraFast™ Transient Response
- Current Mode Control
- Current Foldback Protection, Parallel/Current Sharing
- Small and Very Low Profile Package:
15mm × 9mm × 2.3mm LGA
Typical Application
Description
The LTM4604 is a complete 4A switch mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 2.375V to 5.5V, the LTM4604 supports an output voltage range of 0.8V to 5V, set by a single resistor. This high efficiency design delivers up to 4A continuous current (5A peak). Only bulk output capacitors are needed to complete the design.
The low profile package (2.3mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports output voltage tracking for supply rail sequencing.
Fault protection features include foldback current protection, thermal shutdown and a programmable soft-start function. The LTM4604 is offered in a space saving and thermally enhanced 15mm × 9mm × 2.3mm LGA package and is Pb free and RoHS compliant.
For easier PC board layout and assembly due to increased spacing between land grid pads, please refer to the LTM4604A.
Packaging
CAD Symbols and Footprints: The file below contains the schematic symbol and PCB footprint which can be converted for use with most popular CAD tools. Download and install the free Ultra Librarian Reader (72Mb) to convert the .bxl file to the format appropriate for your CAD tool
For complete and up to date package information and drawings, please refer to our packaging page
15mm x 9mm x 2.3mm LGA
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- 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 | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTM4604AEV#PBF | LGA | 66 | E | $12.14 | $8.50 | View |
| LTM4604AIV#PBF | LGA | 66 | I | $13.36 | $9.35 | View |
| LTM4604EV#PBF | LGA | 66 | E | $12.90 | $8.50 | View |
| LTM4604IV#PBF | LGA | 66 | I | $14.19 | $9.35 | View |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request 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.Click here to view our complete list of demo boards
Applications
- Telecom and Networking Equipment
- Servers, ATCA Cards
- Industrial Equipment
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
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 IV
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice IV 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.
Related models available in LTspice IV
LTM4604
LTM4604A
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.
