STODD01 datasheet(5/31 Pages) STMICROELECTRONICS

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STODD01

Pin configuration

Doc ID 17789 Rev 2

5/31

Pin configuration

Figure 2.

Pin connection (top through view)

Table 5.

Pin description

Pin n°

Symbol

Name and function

GND_P

Power Ground pin (ch1)

FB1

Step-up feedback pin (ch1)

3VIN_A

Power Supply for internal analog circuits

FB2

Step-down feedback pin (ch2)

GND_P

Power Ground pin (ch2)

SW2

Step-down switching pin (ch2)

7VIN_P

Power input voltage pin

SW3

Step-down switching pin (ch3)

GND_P

Power Ground pin (ch3)

FB3

Step-down feedback pin (ch3)

GND_A

Analog Ground pin

OUT1

Step-up output voltage

S-Wire pin. If connected to GND, VFB1=0.8V

(1)

SW1

Step-up switching pin (ch1)

Enable pin. Connecting the pin to a voltage higher than 1.2 V the step-up is

ON.Connecting the pin to a voltage lower than 0.4 V the step-up is OFF,

resulting in no current flow to the load

Reset

Reset pin. It is an open drain output

Exposed pad

Ground and thermal dissipation pad

If this function is not used, the TX pin must be connected to GND

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