ADuM5401/ADuM5402/ADuM5403/ADuM5404

Data Sheet

Rev. C | Page 16 of 28

16

15

14

13

12

11

10

9

ADuM5404

TOP VIEW

(Not to Scale)

Figure 10. ADuM5404 Pin Configuration

Table 24. ADuM5404 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

OA

Logic Output A.

4

V

OB

Logic Output B.

5

V

OC

Logic Output C.

6

V

OD

Logic Output D.

7

RC

OUT

Regulation Control Output. This pin is connected to the RC

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

11

V

ID

Logic Input D.

12

V

IC

Logic Input C.

13

V

IB

Logic Input B.

14

V

IA

Logic Input A.

16

V

ISO

Secondary Supply Voltage Output for External Loads, 3.3 V (V

TRUTH TABLE

Table 25. Truth Table (Positive Logic)

V

SEL

1

RC

OUT

2

V

V

Notes

H

PWM

5

5

Master mode, normal operation

L

PWM

5

3.3

Master mode, normal operation

L

PWM

3.3

3.3

Master mode, normal operation

H

PWM

3.3

5

This supply configuration is not recommended due to extremely poor efficiency