LTM2884 - Isolated USB Transceiver with Isolated Power

Features

  • Isolated USB Transceiver: 2500VRMS for 1 Minute
  • UL-CSA Recognized File #E151738
  • USB 2.0 Full Speed and Low Speed Compatible
  • Integrated Isolated DC/DC Converter, External or Bus Powered
  • Auto-Configuration of Bus Speed
  • 2.5W (500mA at 5V) Output Power from External Input Supply (VCC = 8.6V to 16.5V)
  • 1W (200mA at 5V) Output Power from USB Bus Supply (VBUS)
  • 3.3V LDO Output Supply Signal References VLO, VLO2
  • High Common Mode Transient Immunity: 30kV/μs
  • ESD: ±15kV HBM on USB Interface Pins
  • 15mm × 15mm × 5mm Surface Mount BGA Package

Typical Application

LTM2884 Typical Application
LTM2884 Typical Application

Description

The LTM®2884 is a complete galvanically isolated USB 2.0 compatible μModule® (micromodule) transceiver. An upstream supply powers both sides of the interface through an integrated, isolated DC/DC converter.

The LTM2884 is ideal for isolation in host, hub, bus splitter or peripheral device applications. It is compatible with USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) operation. Automatic speed selection configures integrated pull-up resistors on the upstream port to match those sensed on the downstream device.

The isolator μModule technology uses coupled inductors and an isolated power transformer to provide 2500VRMS of isolation between the upstream and downstream USB interface. This device is ideal for systems requiring isolated ground returns or large common mode voltage variations. Uninterrupted communication is guaranteed for common mode transients greater than 30kV/μs.

Enhanced ESD protection allows this part to withstand up to ±15kV (human body model) on the USB transceiver interface pins to local supplies and ±15kV through the isolation barrier to supplies without latch-up or damage.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTM2884CY#PBF 15mm x 15mm x 5.02mm BGA BGA C 05-08-1881 Yes
LTM2884HY#PBF 15mm x 15mm x 5.02mm BGA BGA H 05-08-1881 Yes
LTM2884IY#PBF 15mm x 15mm x 5.02mm BGA BGA I 05-08-1881 Yes


LTM2884 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTM2884CY#PBF 15mm x 15mm x 5.02mm BGA C $24.76 $17.33 Yes
LTM2884HY#PBF 15mm x 15mm x 5.02mm BGA H $32.71 $22.90 Yes
LTM2884IY#PBF 15mm x 15mm x 5.02mm BGA I $27.29 $19.10 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1789A LTM2884 Demo Board | Isolated USB Transceiver with Power $75.00
LTP2884 In-line USB Isolator $150.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Isolated USB Interfaces
  • Host, Hub, or Device Isolation
  • Industrial/Medical Data Acquisition

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support