ADUM3471

PRODUCTION

Isolated Switching Regulators (3/1 Channel Directionality)

Data Sheet (Rev. C) Product Selection Table

Part Models: 8
1ku List Price: Starting From $3.39

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Overview

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 maximum
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
Safety and regulatory approvals
- UL 1577
  - V_ISO = 2500 V rms for 1 minute
- IEC/EN/CSA 62368-1
- IEC/CSA 61010-1
- CQC GB 4943.1
- DIN EN IEC 60747-17 (VDE 0884-17)
  - V_IORM = 560 V peak
Qualified for automotive applications

The ADuM3470 / ADuM3471 / ADuM3472 / ADuM3473 / ADuM3474 devices are quad-channel, digital isolators with an integrated PWM controller and transformer driver for an isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler^® technology, the dc-to-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-to-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-to-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
Automotive

Part Models: 8
1ku List Price: Starting From $3.39

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADUM3471ARSZ	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471ARSZ-RL7	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471CRSZ	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471CRSZ-RL7	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471WARSZ	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471WARSZ-RL7	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471WCRSZ	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM3471WCRSZ-RL7	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 7, 2025 - 25_0066 Update Data Sheet Regulatory Information for Select Isolator Products with DC-to-DC Converters
		PCN25_0066_Form Material_Report Datasheet Specification Comparison
ADUM3471ARSZ	PRODUCTION
ADUM3471ARSZ-RL7	PRODUCTION
ADUM3471CRSZ	PRODUCTION
ADUM3471CRSZ-RL7	PRODUCTION
ADUM3471WARSZ	PRODUCTION
ADUM3471WARSZ-RL7	PRODUCTION
ADUM3471WCRSZ	PRODUCTION
ADUM3471WCRSZ-RL7	PRODUCTION
May 8, 2014 - 14_0133 ADUM3470/71/72/73/74 Data Sheet Correction
		PCN14_0133_Form Material_Report
ADUM3471ARSZ	PRODUCTION
ADUM3471ARSZ-RL7	PRODUCTION
ADUM3471CRSZ	PRODUCTION
ADUM3471CRSZ-RL7	PRODUCTION
ADUM3471WARSZ	PRODUCTION
ADUM3471WARSZ-RL7	PRODUCTION
ADUM3471WCRSZ	PRODUCTION
ADUM3471WCRSZ-RL7	PRODUCTION
Feb 27, 2012 - 11_0066 Qualification of Alternate Fab Foundry Gold Plating Process Site for Isolation Products at ADI Limerick.
		PCN11_0066_Form Material_Report Qualification Plan Summary Flow Chart
ADUM3471ARSZ	PRODUCTION
ADUM3471ARSZ-RL7	PRODUCTION
ADUM3471CRSZ	PRODUCTION
ADUM3471CRSZ-RL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

EVAL-ADUM3471: Evaluation Board for the ADUM3470/3471/3472/3473/3474

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Features and Benefits

2 independent ADuM347x circuits including 2.5 kVrms isolated dc-to-dc converters
Single supply 5 V in to 5 V out (regulated) Reconfigurable to 5 V in to 3.3 V out or 3.3 V in to 3.3 V out
Double supply 5 V in to 15 V out (regulated) and 7.5 V out (unregulated) Reconfigurable to 5 V in to 12 V out (regulated) and 6 V out (unregulated)
4 isolated 25Mbps data channels per ADuM347x circuit
Footprints for Coilcraft and Halo transformer options
Multiple switching frequency options

Product Details

The EVAL-ADuM3471EBZ demonstrates two separate applications for the ADuM347x family of quad-channel digital isolators with integrated transformer drivers. It has two independent power supply circuits: a double supply and a single supply. The switching frequency can be set from 200 kHz to 1000 kHz. The board supports a variety of I/O configurations and multiple transformer options. It is equipped with two ADuM3471 isolators.