...........continued

Pin Number

PD70224

VQFN 40 Lead

Pin Designator

Description

18

N.A.

Not applicable (pin not present)

19, 20

IN1A

Input “1” of bridge rectifier number A.2

21, 22, 23

OUTN

Rectified negative (lower) rail shared by both bridges (same as

pins 10, 11, and 12)

24

N.A.

Not applicable (pin not present)

25, 26, 27, 28

IN1B

Input “1” of bridge rectifier number B

29

N.A.

Not applicable (pin not present)

30, 31, 32

OUTP

Rectified positive (upper) rail shared by both bridges (same as pins

1, 2, and 3)

33, 34

IN1A

Input “1” of bridge rectifier number A (same as pins 19 and 20)3

35

N.A.

Not applicable (pin not present)

36

WA_EN

While this input is low (referenced to OUTN), the chip work

according to internal flow diagram. When this input is high, it

enable wall adapter feature, that is, turn OFF internal switches and

act as regular diode bridge.

N.A.

Not applicable (pin not present)

37

N.C.

Not connected; do not connect externally (leave floating)

38

N.A.

Not applicable (pin not present)

39, 40

IN2A

Input “2” of bridge rectifier number A (same as pins 13 and 14)4

41

EPAD1

Connect to OUTP on PCB

42

EPAD2

Connect to OUTN on PCB

Notes: 

1.

These pins are not shorted to pins 39 and 40 inside the device. The device functionality relies on a copper

trace on the PCB, between pins 13, 14, 39, and 40.

2.

These pins are not shorted to pins 33 and 34 inside the device. The device functionality relies on a copper

trace on the PCB, between pins 33, 34, 19, and 20.

3.

These pins are not shorted to pins 19 and 20 inside the device. The device functionality relies on a copper

trace on the PCB, between pins 33, 34, 19, and 20.

4.

These pins are not shorted to pins 13 and 14 inside the device. The device functionality relies on a copper

trace on the PCB, between pins 13, 14, 39, and 40.

PD70224

Pin Descriptions

Datasheet

DS00003575C-page 11