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DC/DC POL Converter, Adjustable, Buck, 400 kHz, 4.7 V to 4.7 V in, 0.6 V to 3.3 V/40 A out, BGA-144

LTM4636IY-1#PBF - DC/DC POL Converter, Adjustable, Buck, 400 kHz, 4.7 V to 4.7 V in, 0.6 V to 3.3 V/40 A out, BGA-144

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LTM4636IY-1#PBF   Datasheet
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Product Overview

The LTM4636IY-1#PBF from Linear Technology is a 40A µModule regulator in 144 lead BGA package. This power module switching regulator with stacked inductor as a heat sink for heat dissipation and cooler operation in a small package. It detects overtemperature, input/output overvoltage conditions and can trip an upstream power supply or circuit breaker to protect itself and its load. The exposed inductor as a heat sink permits direct contact with airflow from any direction. Can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over ambient temperature. Full-power 40W is delivered up to 83°C ambient and half-power 20W is supported at 110°C ambient. It operates at 92%, 90% and 88% efficiency delivering 15A, 30A and 40A respectively, to a 1V load (12VIN). This regulator is scalable where four in current sharing deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). It is used in telecom servers, networking equipment, industrial equipment and medical systems.
  • Wide input voltage range from 4.7V to 15V
  • 0.6V to 3.3V output voltage range
  • ±1.3% total DC output voltage error (-40°C to 125°C)
  • Differential remote sense amplifier for precision regulation
  • Current mode control/fast transient response
  • Operating temperature range from -40°C to 125°C
  • Frequency synchronization, parallel current sharing (up to 240A)
  • Overcurrent foldback protection, overtemperature shutdown
  • Dimension is 16mm x 16mm x 7.07mm


Power Management, Industrial, Communications & Networking

Product Information




1 Output







Buck (Step Down)



MSL 3 - 168 hours
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