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LTM4644IY#PBF
LTM4644IY#PBF
| Part Number | LTM4644IY#PBF |
|---|---|
| Manufacturer | Analog Devices Inc. (ADI) / Linear Technology |
| Category | Integrated Circuits (ICs) > Power Management ICs > DC-DC Step-Down μModule Power Regulators |
| Product Type | 4 Channel Step-Down Power Module (Buck Regulator) |
| Description | Quad output 4A continuous / 5A peak step-down μModule power regulator, configurable as single 16A, dual 12A/4A, triple or quad independent power rails, 4V~14V main input (2.375V min with external bias), industrial grade 77-ball BGA package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The LTM4644IY#PBF is an industrial 4-channel step-down μModule regulator from ADI (Linear Technology). It accepts 4–14V main input (2.375V min with external bias), integrating controllers, power MOSFETs, inductors and internal thermal diode in one 77-ball BGA (9×15×5.01mm) package. Each rail outputs 4A continuous / 5A peak with ±1.5% DC accuracy; channels can be paralleled for up to 16A total output. Equipped with low ripple, external clock sync and full OVP/OCP/thermal protection, it serves as compact plug-and-play power supply for FPGA, ASIC, DSP and industrial multi-rail hardware.
Core Advantages
Flexible Quad Output Parallelability
Four independent 4A continuous / 5A peak output channels that can be externally paralleled to scale flexibly up to a single 16A continuous output rail.
Ultra-High Density Integrated Module
Combines step-down switching controllers, power MOSFETs, internal inductors and closed-loop compensation networks inside one module, drastically reducing PCB layout footprint and BOM component count.
Excellent Thermal & Wide Industrial Temperature Performance
Thermally optimized 77-ball BGA substrate ensures uniform heat dissipation; fully guaranteed performance across full industrial -40°C ~ +125°C operating temperature window, equipped with built-in temperature sensing diode for real-time thermal monitoring.
Comprehensive Multi-Rail Fault Protection
Native integrated overvoltage protection, cycle-by-cycle overcurrent protection and thermal shutdown cut-off across all four output channels to extend long-term system reliability.
Key Specifications
| Brand | Analog Devices Inc. (ADI) / Linear Technology μModule Power Series |
|---|---|
| RoHS Status | RoHS3 Compliant / Lead-Free / Halogen-Free and Green Eco-Standards Approved |
| EDA/CAD Model | 3D STEP Models, Schematic Symbols, and PCB Layout Footprints available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 77-BGA (9mm × 15mm × 5.01mm) |
| Mounting Type | Surface Mount Technology (SMD/SMT Ball Reflow Solder) |
| Surface Marking / Silkscreen | LTM4644Y Marking |
| Number of Output Channels | 4 Independent Adjustable Output Rails |
| Input Voltage Scope | 4.0V to 14.0V Main Input Rail range (Scales down to 2.375V when using an external bias supply) |
| Output Voltage Spectrum | 0.6V to 5.5V adjustable independently for each of the four output channels |
| Per Channel Output Current | 4A Continuous Current, 5A Peak Transient Current |
| Max Parallel Combined Current | 16A Total Continuous Output (All 4 Channels Paralleled) |
| DC Output Voltage Accuracy | High-precision total DC output regulation window accuracy |
| Switching Frequency Spectrum | Selectable or programmable frequency control ranging from 300 kHz up to 1.3 MHz |
| External Clock Synchronization | Supports external clock phase-locking sync options to eliminate harmonic beat noise |
| Operating Temperature Range | -40°C to +125°C (Industrial-Grade Full Guaranteed Extended Temperature Operation Limits) |
| Storage Temperature | -40°C ~ +125°C |
| Moisture Sensitivity Level (MSL) | MSL 3 (168 hours, 30°C / 60%RH) |
| Built-in Thermal Diode | Internal Temperature Sensing Diode for Real-Time Thermal Monitoring |
| Protection Functions | OVP, Cycle-by-Cycle OCP, Thermal Shutdown for All Channels |
Typical Applications
- Multi-Rail FPGA, ASIC, DSP, and Microprocessor Core Power Architectures
- High-Density Telecom Infrastructure Routers, Base Station Cards, and Network Switches
- Industrial Control Boards, Advanced Robotic Systems, and Multi-Sensor Processing Equipment
- PCI Express (PCIe) Interface Accel Cards, Enterprise Servers, and Cloud Datacenter Modules
- Medical Imaging Electronics, Automated Test Equipment (ATE), and Precision Airborne Avionics Gauges
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the LTM4644IY#PBF 100% original and authentic?
A: Yes, we guarantee that all LTM4644IY#PBF modules in our warehouse inventory are 100% brand-new, factory-original products directly from Analog Devices Inc. (ADI) / Linear Technology. Each production lot passes strict incoming quality control checks and is shipped in original protective anti-static trays to maintain perfect structural condition.
Q2: How does the parallel output configuration work on the LTM4644IY#PBF power module?
A: The LTM4644IY#PBF is uniquely engineered with highly flexible internal control architecture. To combine output currents, you can tie the respective output voltage pins, feedback loops, and control tracking pins together externally on the PCB. This allows it to easily morph into a single 16A, dual 12A/4A, or triple-rail regulator layout matching your exact hardware needs.
Q3: What is the main difference between the “IY” suffix and the standard “EY” designation in this product family?
A: The “IY” suffix denotes full industrial-grade specification, guaranteed to meet all electrical performance specs across the full -40°C ~ +125°C operating range. The standard “EY” version only guarantees full performance from 0°C to +125°C; its -40°C low-temperature behavior is validated only via design characterization without formal production test coverage.
Q4: How can our physical engineering group secure the full schematic layout reference design or request a large volume price breakdown?
A: Please complete our Quick Inquiry web form found directly on this product page, noting your target quantities and specific project metrics. Our specialized mixed-signal power module interface support desk will review your submission and reply with full data assets and custom commercial pricing tables within 24 hours.
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