Datasheet

Quad-Channel, 2.5 kV Isolators with
Integrated DC-to-DC Converter
Data Sheet
ADuM5401/ADuM5402/ADuM5403/ADuM5404
Rev. D Document Feedback
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FEATURES
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5.0 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 maximum
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
IEC 60747-5-2 (VDE 0884, Part 2)
V
IORM
= 560 V peak
APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply start-up bias and gate drives
Isolated sensor interfaces
Industrial PLCs
GENERAL DESCRIPTION
The ADuM5401/ADuM5402/ADuM5403/ADuM5404
1
are
quad-channel digital isolators with isoPower®, an integrated,
isolated dc-to-dc converter. Based on the Analog Devices, Inc.,
iCoupler® technology, the dc-to-dc converter provides up to
500 mW of regulated, isolated power at either 5.0 V or 3.3 V
from a 5.0 V input supply, or at 3.3 V from a 3.3 V supply at the
power levels shown in 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 power and feedback paths
in the dc-to-dc converter. The result is a small form factor, total
isolation solution.
The ADuM5401/ADuM5402/ADuM5403/ADuM5404 isolators
provide four independent isolation channels in a variety of
channel configurations and data rates (see the Ordering Guide
for more information).
isoPower 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
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OSC
RECT
4 CHANNEL iCOUPLER CORE
V
DD1
REG
GND
1
V
IA
/V
OA
V
IB
/V
OB
V
IC
/V
OC
V
OD
RC
OUT
GND
1
V
ISO
GND
ISO
V
OA
/V
IA
V
OB
/V
IB
V
OC
/V
IC
V
ID
V
SEL
GND
ISO
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
06577-001
Figure 1.
3
4
5
6
14
13
12
11
ADuM5401
06577-100
V
IA
V
IB
V
OA
V
OB
V
IC
V
OC
V
OD
V
ID
Figure 2. ADuM5401
3
4
5
6
14
13
12
11
ADuM5402
06577-101
V
IA
V
IB
V
OA
V
OB
V
OC
V
IC
V
OD
V
ID
Figure 3. ADuM5402
3
4
5
6
14
13
12
11
ADuM5403
06577-102
V
IA
V
OB
V
OA
V
IB
V
OC
V
IC
V
OD
V
ID
Figure 4. ADuM5403
3
4
5
6
14
13
12
11
ADuM5404
06577-103
V
OA
V
OB
V
IA
V
IB
V
OC
V
IC
V
OD
V
ID
Figure 5. ADuM5404
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.
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