Overview
The LTM4617EY represents a complete switching mode power supply solution in a compact 15mm × 15mm × 5.01mm BGA package. Developed by Analog Devices, this μModule regulator eliminates nearly all design challenges associated with DC/DC converter implementation. The device's fully integrated design includes power MOSFETs, DC/DC controllers, inductors, and compensation components, significantly reducing board space requirements and design time. Engineered for demanding applications, the LTM4617EY operates across a -40°C to 125°C temperature range, making it suitable for industrial environments. Its dual-output configuration provides flexibility for powering multiple voltage rails in complex electronic systems, while the synchronous rectification architecture delivers high efficiency across the load range.
Structure and Working Principle
The LTM4617EY employs a buck converter topology with two independent channels, each capable of delivering up to 10A of continuous output current. The internal architecture features current mode control with constant frequency operation, ensuring stable performance under varying load conditions. The integrated power stage includes high-efficiency MOSFETs and low-loss inductors optimized for minimal switching losses. Input voltage is converted through PWM switching action, with the duty cycle automatically adjusting to maintain the programmed output voltage. The device incorporates cycle-by-cycle current limiting and over-temperature protection circuits. Remote voltage sensing compensates for PCB trace resistance, while the Power Good indicators provide system-level monitoring capability.
Key Features
The LTM4617EY stands out with its 4.5V to 26.5V wide input voltage range, accommodating various industrial power bus standards. Each output can be independently programmed from 0.6V to 5V with ±1.5% output voltage accuracy. The device's high switching frequency (up to 1MHz) allows for smaller external components while maintaining excellent transient response. Advanced features include output voltage tracking/sequencing capability and the option to parallel multiple modules for higher current applications. The thermal design incorporates exposed metal pads for efficient heat dissipation, supporting continuous full-load operation without derating. The module's compact footprint (225mm²) is particularly valuable in space-constrained applications where board real estate is at a premium.
Application Areas
The LTM4617EY finds extensive use in telecommunications infrastructure equipment, particularly in base station cards and network switches where multiple voltage rails are required. Its robust design makes it suitable for industrial automation systems, including PLCs, motor controllers, and distributed I/O modules. Embedded computing applications benefit from the module's ability to power processors, FPGAs, and ASICs requiring precise voltage regulation. Medical equipment manufacturers value the LTM4617EY for its reliability in patient monitoring systems and diagnostic instruments. The module's military-grade temperature range (-55°C to 125°C with appropriate derating) also makes it applicable in defense and aerospace electronics.
Maintenance and Precautions
While the LTM4617EY requires minimal maintenance due to its solid-state design, proper PCB layout is crucial for optimal performance. Designers should follow the manufacturer's recommended layout guidelines, paying particular attention to thermal vias under the package and proper placement of input/output capacitors. The module should be protected from mechanical stress during assembly, as the BGA package is sensitive to board flexure. ESD precautions must be observed during handling, and the device should not be subjected to input voltages beyond its absolute maximum ratings. For high-reliability applications, derating the maximum operating temperature by 10-15°C from the specified limit is recommended to enhance long-term reliability.
B2B Procurement Guide
When sourcing LTM4617EY modules, verify the manufacturer's part number suffix to ensure the correct temperature grade (I for industrial, H for extended temperature). Lead times typically range from 8-12 weeks for standard quantities, so planning procurement accordingly is advised. Consider purchasing from authorized distributors to guarantee authenticity, as counterfeit components are a known issue in the power electronics market. Volume pricing tiers generally start at 100-piece quantities, with significant discounts available for 1,000+ unit orders. Evaluation boards (DC1613A) are available for approximately $150 and can significantly reduce development time for new designs.
Related Manufacturers
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