Quad-Channel Isolators with

Integrated DC-to-DC Converter

Data Sheet

ADuM5401W/ADuM5402W/ADuM5403W

Rev. D

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FEATURES

iso

Power integrated, isolated dc-to-dc converter

Qualified for automotive applications

Regulated 5 V or 3.3 V output

Up to 500 mW output power

Quad dc-to-25 Mbps (NRZ) signal isolation channels

16-lead SOIC package with 7.6 mm creepage

High temperature operation: 105°C

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

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577

CSA Component Acceptance Notice #5A

VDE certificate of conformity

DIN EN 69747-5-2 (VDE 0884 Teil 2):2003-1

APPLICATIONS

Hybrid electric battery management

GENERAL DESCRIPTION

The ADuM5401W/ADuM5402W/ADuM5403W1 devices are

quad-channel digital isolators with isoPower®, an integrated,

isolated dc-to-dc converter. Based on the Analog Devices, Inc.,

i

Coupler® technology, the dc-to-dc converter provides up to

500 mW of regulated, isolated power at 5.0 V (see Table 1).

These devices eliminate the need for a separate, isolated dc-to-

dc converter in low power, isolated designs. The iCoupler chip

scale transformer technology is used to isolate the logic signals

and for the magnetic components of the dc-to-dc converter.

The result is a small form factor, total isolation solution.

The ADuM5401W-1/ADuM5402W-1/ADuM5403W-1

versions of the isolators provide an upgraded voltage reference

to ensure proper startup under all load conditions (see the

Ordering Guide for more information).

iso

Power uses high frequency switching elements to transfer

power through its transformer. Special care must be taken

during printed circuit board (PCB) layout to meet emissions

standards. See the AN-0971 Application Note for board layout

recommendations.

FUNCTIONAL BLOCK DIAGRAMS

Figure 1. ADuM5401W/ADuM5402W/ADuM5403W Block Diagram

Figure 2. ADuM5401W

Figure 3. ADuM5402W

Figure 4. ADuM5403W

Table 1. Power Levels

Input Voltage (V)

Output Voltage (V)

Output Power (mW)

5.0

5.0

500

5.0

3.3

330

3.3

3.3

200

1

Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

OSC

RECT

4 CHANNEL iCOUPLER CORE

REG

ADuM5401W/ADuM5402W/

ADuM5403W

3

4

5

6

14

13

12

11

ADuM5401W

3

4

5

6

14

13

12

11

ADuM5402W

3

4

5

6

14

13

12

11

ADuM5403W