µModule Solutions
µModule Regulators
µModule Buck Regulators
Space & Harsh Environment
Military Plastic (MP)
LTM4608A - Low VIN, 8A DC/DC μModule with Tracking, Margining, and Frequency Synchronization
Features
- Complete Standalone Power Supply
- ±1.75% Total DC Output Error (–55°C to 125°C)
- 2.7V to 5.5V Input Voltage Range
- 8A DC, 10A Peak Output Current
- 0.6V Up to 5V Output
- Output Voltage Tracking and Margining
- Power Good Tracks Margining
- Multiphase Operation
- Parallel Current Sharing
- Onboard Frequency Synchronization
- Spread Spectrum Frequency Modulation
- Overcurrent/Thermal Shutdown Protection
- Current Mode Control/Fast Transient Response
- Selectable Burst Mode® Operation
- Up to 95% Efficiency
- Output Overvoltage Protection
- Small, Low Profile 9mm × 15mm × 2.8mm LGA Package (0.630mm Pads)
Typical Application
Description
The LTM4608A is a complete 8A switch mode DC/DC power supply with ±1.75% total output voltage error. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 2.7V to 5.5V, the LTM4608A supports an output voltage range of 0.6V to 5V, set by a single external resistor. This high efficiency design delivers up to 8A continuous current (10A peak). Only bulk input and output capacitors are needed to complete the design.The low profile package (2.8mm) enables utilization of unused space on the back side of PC boards for high density point-of-load regulation. The 0.630mm LGA pads with 1.27mm pitch simplify PCB layout by providing standard trace routing and via placement. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase and/or spread spectrum operation, output voltage tracking for supply rail sequencing and voltage margining.
Fault protection features include overvoltage protection, overcurrent protection and thermal shutdown. The power module is offered in a compact and thermally enhanced 15mm × 9mm × 2.8mm surface mount LGA package. The LTM4608A is Pb-free and RoHS compliant.
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 2.8mm 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 |
|---|---|---|---|---|---|---|
| LTM4608AEV#PBF | LGA | 68 | E | $16.14 | $11.30 | View |
| LTM4608AIV#PBF | LGA | 68 | I | $17.76 | $12.43 | View |
| LTM4608AMPV#PBF | LGA | 68 | MP | $31.79 | $22.25 | View |
| LTM4608EV#PBF | LGA | 68 | E | $17.15 | $11.30 | View |
| LTM4608IV#PBF | LGA | 68 | I | $18.86 | $12.43 | 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.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1400A | LTM4608AEV DEMO BOARD | 2.7Vinmin, 8A DC/DC uModule Regulator | $0.00 | |
| Buy Now | |||
Applications
- Telecom, Networking and Industrial Equipment
- Storage Systems
- Point of Load Regulation
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
LTM4608
LTM4608A
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.
