ADuM5401W/ADuM5402W/ADuM5403W
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
VDD1 1
16 VISO
GND1 2
15 GNDISO
VIA 3 ADuM5401W 14 VOA
VIB 4 TOP VIEW 13 VOB
VIC 5 (Not to Scale) 12 VOC
VOD 6
11 VID
RCOUT 7
10 VSEL
GND1 8
9 GNDISO
Figure 6. ADuM5401W Pin Configuration
Table 12. ADuM5401W Pin Function Descriptions
Pin No. Mnemonic Description
1
VDD1
Primary Supply Voltage, 4.5 V to 5.5 V. Pin 1 and Pin 7 must be connected to the same external voltage source.
2, 8 GND1
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
VIA
Logic Input A.
4
VIB
Logic Input B.
5
VIC
Logic Input C.
6
VOD
Logic Output D.
7
RCOUT
Regulation Control Output. This pin is connected to the RCIN of a slave isoPower device to allow the ADuM5401W
to control the regulation of the slave device.
9, 15 GNDISO
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
VSEL
This pin must be connected to VISO for proper operation of the part.
11
VID
Logic Input D.
12
VOC
Logic Output C.
13
VOB
Logic Output B.
14
VOA
Logic Output A.
16
VISO
Secondary Supply Voltage Output, 5.0 V for External Loads.
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