Features

• 2500V_RMS for One Minute per UL1577
• UL Recognized ® File #E151738
• Isolated Adjustable DC Power:
  3V to 5V at Up to 30mA
  ±12.5V at Up to 20mA
• No External Components Required
• SPI (LTM2883-S) or I²C (LTM2883-I) Options
• High Common Mode Transient Immunity: 30kV/μs
• High Speed Operation:
  10MHz Digital Isolation
  4MHz/8MHz SPI Isolation
  400kHz I²C Isolation
• 3.3V (LTM2883-3) or 5V (LTM2883-5) Operation
• 1.62V to 5.5V Logic Supply
• ±10kV ESD HBM Across the Isolation Barrier
• Maximum Continuous Working Voltage: 560V_PEAK
• Low Current Shutdown Mode (<10μA)
• Low Profile (15mm × 11.25mm × 3.42mm) BGA Package

Typical Application

Description

The LTM®2883 is a complete galvanic 6-channel digital μModule® (micromodule) isolator. No external components are required. A single 3.3V or 5V supply powers both sides of the interface through an integrated, isolated DC/ DC converter. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply.

Available options are compliant with SPI and I²C (master mode only) specifications.

The isolated side includes ±12.5V and 5V nominal power supplies, each capable of providing more than 20mA of load current. Each supply may be adjusted from its nominal value using a single external resistor.

Coupled inductors and an isolation power transformer provide 2500V_RMS of isolation between the input and output logic interface. This device is ideal for systems where the ground loop is broken, allowing for a large common mode voltage range. Communication is uninterrupted for common mode transients greater than 30kV/μs.