LTM2884IY#PBF.pdf

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 speedselectionconfigures 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 requiringisolated 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.

•  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 

1.  2.5W (500mA at 5V) Output Power from External  Input Supply (VCC = 8.6V to 16.5V) 

2. 1W (200mA at 5V) Output Power from USB Bus  Supply (VBUS) 

3. 3.3V LDO Output Supply Signal References VLO, VLO2 

4. High Common Mode Transient Immunity: 30kV/μs 

5.  ESD: ±15kV HBM on USB Interface Pins 

6. 15mm × 15mm × 5mm Surface Mount BGA Package 

7. Isolated USB Interfaces 

8. Host, Hub, or Device Isolation 

9. Industrial/Medical Data Acquisition