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LTM4619 - Dual, 26VIN, 4A DC/DC μModule Regulator
- Complete Standalone Power Supply
- Wide Input Voltage Range: 4.5V to 26.5V (EXTVCC Available for VIN ≤ 5.5V)
- Dual 180° Out-of-Phase Outputs with 4A DC Typical, 5A Peak Output Current for Each
- Dual Outputs with 0.8V to 5V Range
- Output Voltage Tracking
- ±1.5% Maximum Total DC Output Error
- Current Mode Control/Fast Transient Response
- Power Good
- Phase-Lockable Fixed Frequency 250kHz to 780kHz
- On Board Frequency Synchronization
- Parallel Current Sharing
- Selectable Burst Mode® Operation
- Output Overvoltage Protection
- 15mm × 15mm × 2.82mm LGA Package
The LTM®4619 is a complete dual 4A or single 8A stepdown DC/DC μModule® (micromodule) regulator. Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over input voltage ranges of 4.5V to 26.5V, the LTM4619 supports two outputs with voltage ranges of 0.8V to 5V, each set by a single external resistor. Its high efficiency design delivers 4A continuous current (5A peak) for each output.
High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The two outputs are interleaved with 180° phase to minimize the ripple noise and reduce the I/O capacitors. The device supports frequency synchronization and output voltage tracking for supply rail sequencing. Burst Mode operation or pulseskipping mode can be selected for light load operations.
Fault protection features include overvoltage protection, overcurrent protection and foldback current limit for short-circuit protection.
The low profile package (2.82mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The power module is offered in a 15mm × 15mm × 2.82mm LGA package. The LTM4619 is RoHS compliant with Pb-free finish.
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprint compatible with Mentor Graphics PADS® v9.5 or later, and Cadence ORCAD® v16.5 or later.
For complete and up to date package information and drawings, please refer to our packaging page
15mm x 15mm x 2.8mm LGA
- 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|
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Demo BoardsLinear 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.
|DC1453A||LTM4619EV Demo Board | uModule Regulator with Tracking, 4.5V ≤ VIN ≤ 28V, Vout1 = 3.3V @ 4A, Vout2 = 1.8V @ 4A.||$65.00|
- Telecom and Networking Equipment
- Storage Cards
- ATCA Cards
- Industrial Equipment
- Point of Load Regulation
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The LTpowerCAD II design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
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