LTM®4644 Quad DC/DC μModule® Regulator

The LTM4644 from Analog Devices is a quad DC/DC step-down μModule (micromodule) regulator with 4 A per output. Outputs can be paralleled in an array for up to 16 A capability. Included in the package are the switching controllers, power FETs, inductors, and support components. Operating over an input-voltage range of 4 V to 14 V or 2.375 V to 14 V with an external bias supply, the LTM4644 supports an output-voltage range of 0.6 V to 5.5 V each set by a single external resistor. Its high-efficiency design delivers 4 A continuous (5 A peak) output-current per channel. Only bulk input and output capacitors are needed.

Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4644 is offered in 9 mm × 15 mm × 5.01 mm BGA package. The LTM4644 is available with SnPb (BGA) or RoHS-compliant terminal finish.

Extra solutions: LTC4644

Video: LTM4644 – Quad DC/DC µ Module Regulator with Configurable 4 A Output Array

Features: Quad output step-down μModule regulator with 4 A per output Wide input voltage range: 4 V to 14 V 2.375 V to 14 V with external bias 0.6 V to 5.5 V output-voltage 4 A DC, 5 A peak output current each channel Up to 5.5 W power dissipation (TA = 60°C, 200 LFM, no heat sink) ±1.5% total output-voltage regulation Current-mode control, fast transient response Parallelable for higher output current Output-voltage tracking Internal temperature sensing diode output External frequency synchronization Overvoltage, current, and temperature protection 9 mm × 15 mm × 5.01 mm BGA package Applications: Multirail point-of-load regulation FPGAs, DSPs, and ASICs applications