
ADuM5401/ADuM5402/ADuM5403/ADuM5404
V DD1 1
GND 1 2
16 V ISO
15 GND ISO
Data Sheet
V IA 3
V IB 4
ADuM5402
TOP VIEW
14 V OA
13 V OB
V OC 5
V OD 6
RC OUT 7
(Not to Scale) 12 V IC
11 V ID
10 V SEL
GND 1 8
9
GND ISO
Figure 8. ADuM5402 Pin Configuration
Table 22. ADuM5402 Pin Function Descriptions
Pin No. Mnemonic Description
1
2, 8
3
4
5
6
7
9, 15
10
11
12
13
14
16
V DD1
GND 1
V IA
V IB
V OC
V OD
RC OUT
GND ISO
V SEL
V ID
V IC
V OB
V OA
V ISO
Primary Supply Voltage, 3.0 V to 5.5 V.
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.
Logic Input A.
Logic Input B.
Logic Output C.
Logic Output D.
Regulation Control Output. This pin is connected to the RC IN pin of a slave iso Power device to allow the ADuM5402 to
control the regulation of the slave device.
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.
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.
Logic Input D.
Logic Input C.
Logic Output B.
Logic Output A.
Secondary Supply Voltage Output for External Loads, 3.3 V (V SEL Low) or 5.0 V (V SEL High).
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