Rev. C 03/22

4

PFS5173-5178/5274

www.power.com

SOURCE (S) Pin (Pin 21)

This pin is the source connection for the power switch as well as the

negative bulk capacitor terminal connection.

DRAIN (D) Pin (Pin 28)

This is the drain connection for the internal power switch.

SOURCE (S) Exposed Pad

The exposed pad is the source connection for the power switch as

well as the negative bulk capacitor terminal connection. It also

provides a thermal path for cooling of the power switch.

Figure 4. Pin Configuration.

5 C

4 V

2 G

14 VCC

13 G

12 VDR

11 REF

10 VPP

9 PS

8 PGT

7 PG

6 FB

3 T

1 VS

D1 15

D1 16

D2 18

D2 19

S 21

D 28

PI-9289-100121