STPMIC1APQR datasheet(5/140 Pages) STMICROELECTRONICS

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2.2

Pinout and pin description

Figure 2. Pin configuration WFQFN 44L top view

EPGND

RSTn 1

WAKEUP 2

SDA 3

SCL 4

VOUT1 5

PGND1 6

VLX1 7

BUCK1IN 8

VOUT2 9

PGND2 10

VLX2 11

BUCK2IN 12

23 LDO1OUT

24 BUCK4IN

25 VLX4

26 PGND4

27 VOUT4

28 BUCK3IN

29 VLX3

30 PGND3

31 VOUT3

32 PGBOOST

33 VLXBST

34 BOUT

Table 3. Pin description

Pin name

A/D(1) I/O

Location

Description (default configuration)

RSTn

I/O

Bi-directional reset (active low with internal pull-up)

WAKEUP

Power-ON from host processor (active high with internal pull-down)

SDA

I/O

I2C serial data

SCL

I2C serial clock

VOUT1

Input feedback signal buck converter 1

PGND1

Power ground buck converter 1

VLX1

LX node buck converter 1

BUCK1IN

Power input buck converter 1 must be connected to the same value of VIN pin

VOUT2

Input feedback signal buck converter 2

PGND2

Power ground buck converter 2

VLX2

LX node buck converter 2

BUCK2IN

Power input buck converter 2 must be connected to the same value of VIN pin

LDO3IN

Power input LDO3

LDO3OUT

Output voltage LDO3

GNDLDO

LDO GND

VREFDDR

DDR VREF output voltage

PONKEYn

User power ON key (active low with internal pullup)

STPMIC1

Pinout and pin description

DS12792 - Rev 7

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