STOD03B datasheet(5/22 Pages) STMICROELECTRONICS

5 / 22 page

STOD03B

Pin configuration

Doc ID 022613 Rev 1

5/22

Pin configuration

Figure 3.

Pin configuration (top view)

Table 3.

Pin description

Pin name

Pin n°

Description

Lx1

Boost converter switching node

PGND

Power ground pin

VMID

Step-up converter output voltage (4.9V)

VO1

4.6V fixed LDO output

AGND

Signal ground pin. This pin must be connected to the power ground layer

VREF

Voltage reference output. 1µF bypass capacitor must be connected

between this pin and AGND

SWIRE

Negative voltage setting pin.

Enable control pin. High 1

converter on; low or floating = converter in shutdown mode (1)

No pull-up/pull-down resistors are needed.

VO2

Inverting converter output voltage

Lx2

Inverting converter switching node

VIN A

Analogic input supply voltage

ViN P

Power input supply voltage

Exposed

pad

Internally connected to AGND. Exposed pad must be connected to ground

layers in the PCB layout in order to guarantee proper operation of the

device

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