Datasheet

Data Sheet ADuM5401/ADuM5402/ADuM5403/ADuM5404
Rev. C | Page 13 of 28
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
V
DD1
1
GND
1
2
V
IA
3
V
IB
4
V
ISO
16
GND
ISO
15
V
OA
14
V
OB
13
V
IC
5
V
OC
12
V
OD
6
V
ID
11
RC
OUT
7
V
SEL
10
GND
1
8
GND
ISO
9
ADuM5401
TOP VIEW
(Not to Scale)
06577-004
Figure 7. ADuM5401 Pin Configuration
Table 21. ADuM5401 Pin Function Descriptions
Pin No. Mnemonic Description
1 V
DD1
Primary Supply Voltage, 3.0 V to 5.5 V.
2, 8 GND
1
Ground 1. Ground reference for isolator primary. Pin 2 and Pin 8 are internally connected, and it is recommended that
both pins be connected to a common ground.
3 V
IA
Logic Input A.
4 V
IB
Logic Input B.
5
V
IC
Logic Input C.
6 V
OD
Logic Output D.
7 RC
OUT
Regulation Control Output. This pin is connected to the RC
IN
pin of a slave
iso
Power device to allow the ADuM5401 to
control the regulation of the slave device.
9, 15 GND
ISO
Ground Reference for Isolator Side 2. Pin 9 and Pin 15 are internally connected, and it is recommended that both pins
be connected to a common ground.
10 V
SEL
Output Voltage Selection. When V
SEL
= V
ISO
, the V
ISO
setpoint is 5.0 V. When V
SEL
= GND
ISO
, the V
ISO
setpoint is 3.3 V.
11 V
ID
Logic Input D.
12 V
OC
Logic Output C.
13 V
OB
Logic Output B.
14 V
OA
Logic Output A.
16 V
ISO
Secondary Supply Voltage Output for External Loads, 3.3 V (V
SEL
Low) or 5.0 V (V
SEL
High).