The LTM4644/LTM4644-1 is a quad DC/DC step-down µModule (micromodule) regulator with 4A per output. Outputs can be paralleled in an array for up to 16A capability. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 4V to 14V or 2.375V to 14V with an external bias supply, the LTM4644/LTM4644-1 supports an output voltage range of 0.6V to 5.5V. Its high efficiency design delivers 4A continuous (5A peak) output current per channel. Only bulk input and output capacitors are needed.
Feature
Quad Output Step-Down µModule® Regulator with 4A per Output
Wide Input Voltage Range: 4V to 14V
0.6V to 5.5V Output Voltage
4A DC, 5A Peak Output Current Each Channel
Up to 5.5W 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
9mm × 15mm × 5.01mm BGA Package
Applications
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
