STODD03

Pin configuration

Doc ID 018980 Rev 1

5/16

3

Pin configuration

Figure 2.

Pin connections (top view)

Table 4.

Pin description

Pin number

Symbol

Function

1

GND_P1

Power ground pin (ch1)

2

FB1

Step-up feedback pin (ch1)

Power supply for internal analog circuits

4

EN2

5

exceed 1 A max.

6

VIN_PSW

Power switch input

Power input voltage

8

SW2

Step-down switching pin (ch2)

9

GND_P2

Power ground (ch2)

10

FB2

Step-down feedback (ch2)

11

GND_A

Analog ground pin

12

OUT1

Step-up output voltage

13

EN-SW

Power switch enable pin active high (see Table 5)

14

SW1

Step-up switching pin (ch1)

15

EN1

Step-up enable pin. Step-up is enabled if EN1 > 1.2 V and EN-SW is set low (see

also Table 6: Step-up EN1 and EN-SW truth table). When the step-up is disabled, no

current will flow to the load thanks to the true-shutdown function.

16

EN-SW

Power switch Enable pin active low (see Table 5)

epad

Epad

Exposed pad to be connected to a suitable gnd layer area, through vias, for thermal

heat dissipation.