LTM4603 Datasheet | Linear Technology

Features n plete Switch Mode Power Supply n Wide Input Voltage Range: 4.5V to 20V n 6A DC Typical, 8A Peak Output Current n 0.6V to 5V Output Voltage n Output Voltage Tracking and Margining n Remote Sensing for Precision Regulation (LTM4603 Only) n Typical Operating Frequency: 1MHz n PLL Frequency Synchronization n 1.5% Regulation n Current Foldback Protection (Disabled at Start-Up) n Pin patible with the LTM4601 n Pb-Free (e4) Ro HS pliant Package with Gold Finish Pads n Ultrafast Transient Response n Current Mode Control n Up to 93% Efficiency at 5VIN, 3.3VOUT n Programmable Soft-Start n Output Overvoltage Protection n Small Footprint, Low Profile (15mm × 15mm × 2.82mm) Surface Mount LGA Package Applications n Tele and Networking Equipment n Servers n Industrial Equipment n Point of Load Regulation LTM4603/LTM4603-1 20V, 6A DC/DC µModule Regulator with PLL, Output Tracking and Margining Description The LTM®4603 is a plete 6A step-down switch mode DC/DC µModule® regulator with onboard switching controller, MOSFETs, inductor and all support ponents. The device is housed in a small surface mount 15mm × 15mm × 2.82mm LGA package. Operating over an input voltage range of 4.5V to 20V, the LTM4603 supports an output voltage range of 0.6V to 5V as well as output voltage tracking and margining. The high efficiency design delivers 6A continuous current (8A peak). Only bulk input and output capacitors are needed to plete the design. The low profile (2.82mm) and light weight (1.7g) package easily mounts on the unused space on the back side of PC boards for high density point of load regulation. The µModule regulator can be synchronized with an external clock for reducing undesirable frequency harmonics and allows Poly Phase® operation for high load currents. A high switching frequency and adaptive on-time current mode architecture deliver a very fast transient response to line and load changes without sacrificing stability. An...