LTM4644MPY#PBF

LTM®4644 is a quad DC/DC step-down µModule (micromodule) regulator with 4A output array. 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. Typical applications are multirail point of load regulation, FPGAs, DSPs, ASICs and general applications.

• 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
• Integrated 60.4k 0.5% resistor (Top Feedback Resistor from VOUT-to-VFB (one resistor per channel))
• SAC305 pad/ball finish
• -55°C to 125°C temperature range
• 9mm x 15mm x 5.01mm BGA package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party