Power Management
Switching Regulator
Buck-Boost Regulator
µModule Buck-Boost Regulators
Space & Harsh Environment
Military Plastic (MP)
LTM4609 - 36VIN, 34VOUT High Efficiency Buck-Boost DC/DC μModule
Features
- Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
- Wide VIN Range: 4.5V to 36V
- Wide VOUT Range: 0.8V to 34V
- IOUT: 4A DC (10A DC in Buck Mode)
- Up to 98% Efficiency
- Current Mode Control
- Power Good Output Signal
- Phase-Lockable Fixed Frequency: 200kHz to 400kHz
- Ultra-Fast Transient Response
- Current Foldback Protection
- Output Overvoltage Protection
- Small, Low Profile Surface Mount LGA Package (15mm × 15mm × 2.8mm)
Typical Application
Description
The LTM4609 is a high efficiency switching mode buck-boost power supply. Included in the package are the switching controller, power FETs and support components. Operating over an input voltage range of 4.5V to 36V, the LTM4609 supports an output voltage range of 0.8V to 34V, set by a resistor. This high efficiency design delivers up to 4A continuous current in boost mode (10A in buck mode). Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design.
The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The LTM4609 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics.
Fault protection features include overvoltage and foldback current protection. The DC/DC μModule® is offered in a small thermally enhanced 15mm × 15mm × 2.8mm LGA package. The LTM4609 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 15mm 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 |
|---|---|---|---|---|---|---|
| LTM4609EV#PBF | LGA | 141 | E | $32.22 | $22.55 | View |
| LTM4609EY#PBF | BGA | 141 | E | View | ||
| LTM4609IV#PBF | LGA | 141 | I | $35.43 | $24.80 | View |
| LTM4609IY#PBF | BGA | 141 | I | View | ||
| LTM4609MPV#PBF | LGA | 141 | MP | $53.14 | $37.20 | View |
| LTM4609MPY#PBF | BGA | 141 | MP | 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 |
|---|---|---|---|
| DC1477B | LTM4609EV Demo Board | 34Vout, 4A Buck-Boost uModule Regulator | $65.00 | |
| Buy Now | |||
Applications
- Telecom, Servers and Networking Equipment
- Industrial and Automotive Equipment
- High Power Battery-Operated Devices
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
LTM4609
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.
