Product Details
●The ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 devices are quad-channel, digital isolators with an integrated PWM controller and transformer driver for an isolated DC/DC converter. Based on the Analog Devices, Inc., iCoupler® technology, the DC/DC converter provides up to 2 W of regulated, isolated power at 3.3 V to 24 V from a 5.0 V input supply or from a 3.3 V supply. This eliminates the need for a separate, isolated DC/DC converter in 2 W isolated designs. The iCoupler chip-scale transformer technology is used to isolate the logic signals, and the integrated transformer driver with isolated secondary side control provides higher efficiency for the isolated DC/DC converter. The result is a small form factor, total isolation solution.
●The ADuM347x isolators provide four independent isolation channels in a variety of channel configurations and data rates.
●Applications
● RS-232/RS-422/RS-485 transceivers
● Industrial field bus isolation
● Power supply startup bias and gate drives
● Isolated sensor interfaces
● Process controls
●### Features and Benefits
● Isolated PWM Controller
● Integrated transformer driver
● Regulated adjustable output: 3.3 V to 24 V
● 2 W output power
● 70% efficiency at guaranteed load of 400 mA at 5.0 V output
● Quad dc-to-25 Mbps (NRZ) signal isolation channels
● 20-lead SSOP package
● High temperature operation: 105°C
● High common-mode transient immunity: >25 kV/μs
● 200 kHz to 1 MHz adjustable oscillator frequency
● Soft start function at power-up
● Pulse-by-pulse overcurrent protection
● Thermal shutdown
● 2500 V rms isolation
● Evaluation Board available
● Automotive Qualified
