LTM4644 Datasheet

Part No.	In Stock	Price	Packaging	SPQ	Marking	MSL	Pins	Temp Range	Package Description
LTM4644EY#PBF	340pcs	$30.258	Tray	170	LTM4644Y	3	77	-40°C ~ 125°C	77-Lead BGA
LTM4644IY	0	$0	Tray	170	LTM4644Y	3	77	-40°C ~ 125°C	77-Lead BGA
LTM4644IY#PBF	680pcs	$33.291	Tray	170	LTM4644Y	3	77	-40°C ~ 125°C	77-Lead BGA
LTM4644MPY	0	$0	Tray	170	LTM4644Y	3	77	-55°C ~ 125°C	77-Lead BGA
LTM4644MPY#PBF	95pcs	$66.402	Tray	170	LTM4644Y	3	77	-55°C ~ 125°C	77-Lead BGA

• Quad Output Step-Down µModule^® Regulator with 4A per Output
• Wide Input Voltage Range: 4V to 14V
  • 2.375V to 14V with External Bias
• 0.6V to 5.5V Output Voltage
• 4A DC, 5A Peak Output Current Each Channel
• Up to 5.5W Power Dissipation (T_A = 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

• Multirail Point of Load Regulation
• FPGAs, DSPs and ASICs Applications

The LTM4644 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, powerFETs, 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 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.