ADUM3471ARSZ-RL7

Digital Isolator Logic 4CH 1Mbps 20Pin SSOP T/R

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**

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RS-232/RS-422/RS-485 transceivers

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Industrial field bus isolation

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Power supply startup bias and gate drives

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Isolated sensor interfaces

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Process controls

### Features and Benefits

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Isolated PWM Controller

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Integrated transformer driver

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Regulated adjustable output:

3.3 V to 24 V

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2 W output power

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70% efficiency at guaranteed load of 400 mA at 5.0 V output

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Quad dc-to-25 Mbps NRZ signal isolation channels

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20-lead SSOP package

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High temperature operation: 105°C

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High common-mode transient immunity: >25 kV/μs

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200 kHz to 1 MHz adjustable oscillator frequency

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Soft start function at power-up

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Pulse-by-pulse overcurrent protection

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Thermal shutdown

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2500 V rms isolation

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Evaluation Board available

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Automotive Qualified