Ultrathin 1.8mm, 3A µModule Regulator in 6.25mm × 6.25mm LGA Package for PCIe, ATCA, microTCA Cards & Backside PCB Assembly

Dec 1 2014 - MILPITAS, CA
  • Linear Technology Corporation introduces the LTM4623 3A µModule (micromodule) step-down regulator in an ultrathin 1.8mm profile LGA package with only a 6.25mm × 6.25mm footprint. With solder paste, the package height is less than 2mm, meeting the height restrictions of many PCIe (Peripheral Component Interconnect Express), Advanced Mezzanine Cards (AMC) for AdvancedTCA carrier cards in embedded computing systems. The small size and low height allow the LTM4623 to be mounted on the backside of the PCB, freeing space on the topside for components such as memory and FPGAs. The LTM4623 operates from 4V to 20V input supplies and precisely regulates an output voltage from 0.6V to 5.5V with 1.5% maximum total DC output voltage error, Application examples include ultra-dense data storage, gateway controllers and 40Gbps to 100Gbps network equipment.

    Ultrathin 3A µModule Regulator


    The LTM4623 solution fits in a 0.5cm2 dual-sided PCB or <1cm2 on a single-sided PCB. The circuit only requires one input capacitor and one output capacitor, a resistor to set VOUT, and a small capacitor for VOUT tracking and soft-start. With an auxiliary 5V bias, the LTM4623 operates from input supplies as low as 2.375V. The operating efficiency for converting 12VIN to 1.5VOUT and 3.3VOUT at 3A is 80% and 88%, respectively. Power loss for 12VIN to 1.5VOUT is 1.1W, resulting in only a 24°C rise in junction temperature. The LTM4623 is rated for operation from –40°C to 125°C. 1,000-piece pricing starts at $6.05 each. For more information, visit www.linear.com/product/LTM4623.

    Summary of Features: LTM4623

    • Ultrathin 1.8mm × 6.25mm × 6.25mm LGA 3A µModule® Regulator
    • <0.5cm2 Total Solution, Dual-Sided PCB
    • Wide Input Voltage Range = 4V to 20V
    • Output Voltage Adjustable with Resistor from 0.6V to 5.5V
    • Overvoltage, Overcurrent & Overtemperature Protection.



    The USA list pricing shown is for budgetary use only. International prices may differ due to local duties, taxes, fees and exchange rates.

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