Pin Descriptions

Pin

Pin Name

I/O

Type

Functional Description

1

VIN2

I

PWR

Power in from either DC source or Battery to Buck 2

2

SW2

O

PWR

Buck2 switcher output pin

3

GND_SW2

G

G

Buck2 NMOS Power Ground

4

GND_C

G

G

Non switching core ground pin

5

GND_SW1

G

G

Buck1 NMOS Power Ground

6

SW1

O

PWR

Buck1 switcher output pin

7

VIN1

I

PWR

Power in from either DC source or Battery to buck 1

8

SDA

I/O

D

I

9

SCL

I

D

I

10

EN_T

I

D

Enable for preset power on sequence.

11

FB1

I

A

Buck1 input feedback terminal

12

AVDD

I

PWR

Analog Power for Buck converters.

13

VINLDO1

I

PWR

Power in from either DC source or Battery to input terminal of

LDO1

14

LDO1

O

PWR

LDO1 Output

15

ENLDO1

I

D

LDO1 enable pin, a logic HIGH enables the LDO1

16

ENLDO2

I

D

LDO2 enable pin, a logic HIGH enables the LDO2

17

GND_L

G

G

LDO Ground

18

LDO2

O

PWR

LDO2 Output

19

VINLDO2

I

PWR

Power in from either DC source or battery to input terminal to

LDO2

20

VinLDO12

I

PWR

Analog Power for Internal Functions (VREF, BIAS, I2C, Logic)

21

FB2

I

A

Buck2 input feedback terminal

22

ENSW1

I

D

Enable Pin for Buck1 switcher, a logic HIGH enables Buck1

23

SYNC

I

D

Frequency Synchronization pin which allows the user to

connect an external clock signal PLL to synchronize the PMIC

internal oscillator.

24

ENSW2

I

D

Enable Pin for Buck2 switcher, a logic HIGH enables Buck2

A: Analog Pin D: Digital Pin G: Ground Pin PWR: Power Pin I: Input Pin I/O: Input/Output Pin O: Output Pin

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