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LTM2884 数据手册 ( 数据表 ) - Linear

产品描述 (功能)
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The LTM2884 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 orperipheral device applications. It is compatible with USB2.0 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 provide2500VRMS 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.

■ Isolated USB Transceiver: 2500VRMS for 1 Minute
■ 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

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

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