industry news
Subscribe to EE Journal Daily Newsletter

40A Scalable µModule Regulator Protects Load by Tripping Upstream Power Source

MILPITAS, CA – February 8, 2017 – Linear Technology Corporation introduces the LTM4636-1, a 40A to 240A scalable step-down µModule switching regulator. The part incorporates protection circuitry that trips a circuit breaker in the event of overvoltage or overtemperature fault conditions to protect itself, the PCB and loads such as high current low voltage processors, FPGAs, GPUs and ASICs. An output crowbar function quickly clamps the output to protect the load during an overvoltage condition. The LTM4636-1 benefits from an innovative BGA package construction in which the inductor is exposed on top and is used as a heat sink, permitting direct contact with airflow from any direction for more effective cooling.

By stacking the inductor on top of a 16mm x 16mm BGA package, the LTM4636-1 can deliver 40W with only 40°C rise over the ambient temperature (12VIN, 1VOUT, 40A, 200LFM). Full-power 40W is delivered up to 83°C ambient and half-power 20W is supported at 110°C ambient.

The LTM4636-1 operates at 92%, 90% and 88% efficiency, delivering 15A, 30A and 40A, respectively, to a 1V load from 12VIN. The µModule regulator is scalable, so four LTM4636-1s in parallel can deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT, 200LFM).

Total device height is 7.07mm with a 16mm x 16mm BGA footprint. In addition to dissipating heat from the top, the LTM4636-1 is designed to uniformly disperse heat from the bottom of the package to the PCB with 144 BGA solder balls, with banks of solder balls assigned as GND, VIN and VOUT where high current flows. The LTM4636-1 µModule regulator provides impressive DC/DC conversion efficiency, enhanced heat dispersion and safety circuitry, ensuring enhanced thermal performance, as well as voltage and thermal protection in a small package. The LTM4636-1 operates from 4.7V to 15V input supply and regulates an output voltage from 0.6V to 3.3V. Total DC output voltage accuracy is ±1.3% from –40°C to 125°C. 1,000-piece price starts at $44.11 each. For more information, visit www.linear.com/product/LTM4636-1.

Summary of Features: LTM4636-1

  • 4.7V to 15V Input
  • 0.6V to 3.3V Output, 40A Current Limit
  • Load Protection with Overvoltage & Overtemperature Monitoring & Tripping of Circuit Breaker (Hot Swap)
  • Stacked Inductor Acts as Heat Sink: Exposed Inductor on Top of Package
  • (3D Construction)
  • Scalable Up to 2 to 6 Devices for 80A to 240A Load Current

Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.

About Linear Technology

Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company’s products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit www.linear.com.

Leave a Reply

featured blogs
Oct 19, 2017
(Please visit the site to view this video) Coming from SJSU Theater (camera Sean) Monday: Arm Announcement (embargoed) Tuesday: Cadence Announcement (embargoed) Wednesday: Why Was Arm Successful in Mobile? Thursday: Oski Formal Verification Club (with Arm and Arteris) Friday:...
Oct 19, 2017
Choosing the right plating is critical to the success of a connector system. Plating affects the connector’s performance, life cycle, quality, and cost. A recent blog explains that pins and plating are usually the main cost drivers in board-to-board connector systems. T...
Sep 12, 2017
Torrents of packets will cascade into the data center: endless streams of data from the Internet of Things (IoT), massive flows of cellular network traffic into virtualized network functions, bursts of input to Web applications. And hidden in the cascades, far darker bits try...
Sep 29, 2017
Our existing customers ask us some pretty big questions: “How can this technology implement a step-change in my specific process? How can Speedcore IP be integrated in my SoC? How can you increase the performance of my ASIC?” We revel in answering such questions. Ho...