Module measures less than 2mm with solder paste

The small size and low height allow the device to be mounted on the backside of the PCB, freeing space on the topside for components such as memory and FPGAs. Operating from 4 to 20V input supplies, the LTM4623 precisely regulates an output voltage of 0.6-5.5V with 1.5% maximum total DC output voltage error. The device is suitable for ultra-dense data storage, gateway controllers and 40-100Gb/s network equipment.

The LTM4623 requires a footprint of 0.5cm² on dual-sided PCB or less than 1cm² on a single-sided PCB. One input capacitor and one output capacitor, a resistor to set V_OUT, and a small capacitor for V_OUT tracking and soft-star, are required for a circuit. The device operates from input supplies as low as 2.375V, with an auxiliary 5V bias. The operating efficiency for converting 12V_IN to 1.5V_OUT and 3.3V_OUT at 3A is 80% and 88%, respectively. For 12V_IN to 1.5V_OUT, power loss is is 1.1W, resulting in only a 24°C rise in junction temperature. The LTM4623, which operates from a -40 to 125°C temperature range, is priced at $6.41 each and sold in 1,000-piece quantities.