LMZ10500SILR – TEXAS INSTRUMENTS

The Texas Instruments LMZ10500SILR is a 5A synchronous step-down converter in a compact 16-pin, 4mm x 4mm QFN package. Specifically designed for high-efficiency point-of-load (POL) applications, it operates with an input voltage range of 4.5V to 18V, enabling its use in a wide variety of systems. Output voltage is adjustable from 0.8V to 5.5V via an external resistor divider, offering flexibility in voltage rail generation. Employing a synchronous topology, the LMZ10500SILR achieves high efficiency (up to 95% at typical loads), minimizing power loss and heat generation. Its internal compensation simplifies design, requiring minimal external components. Features include a 1MHz switching frequency, enabling smaller inductor selection, and an enable pin for power sequencing and control. Protection features comprise short-circuit, overcurrent, overtemperature, and undervoltage lockout. Common applications include powering microprocessors, FPGAs, and other high-current digital logic in space-constrained designs where high efficiency and compact size are crucial. Its high efficiency makes it particularly advantageous in battery-powered systems and applications demanding low thermal dissipation.