ADUM3470CRSZ Datasheet PDF - ADI

●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