Si32172/3/5

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

35

Rev. 1.0 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 31, 2021

13

MOSI

ISI Data Input

Input data from ISI.

14

DCFF

DC Feed-Forward/High Current General Purpose Output

Feed-forward drive of external bipolar transistors to improve dc-dc converter effi-

ciency

15

SDCH

DC Monitor

DC-DC converter monitor input used to detect overcurrent situations in the con-

verter

16

SDCL

DC Monitor

DC-DC converter monitor input used to detect overcurrent situations in the con-

verter.

17

DCDRV

DC Drive/Battery Switch

DC-DC converter control signal output which drives external bipolar transistor.

18

VDD

IC Voltage Supply

3.3 V supply for internal circuitry.

19

VDDREG

Regulated Core Power Supply

20

RST

Reset Input

Active low input. Hardware reset used to place all control registers in the default

state.

21

SVDC

DC-DC Input Voltage Sensor

Senses VDC input to dc-dc converter.

22

SVBAT

VBAT Sense

Analog current input used to sense voltage on dc-dc converter output voltage lead.

23

CAPLB

Calibration Capacitor

24

CAPP

SLIC Stabilization Capacitor

Capacitor used in low pass filter to stabilize SLIC feedback loops.

25

CAPM

SLIC Stabilization Capacitor

Capacitor used in low pass filter to stabilize SLIC feedback loops.

26

IREF

Current Reference Input

Connects to an external resistor used to provide a high accuracy reference current.

27

QGND

Quiet Ground Reference Input

28

VDD

IC Voltage Supply

3.3 V supply for internal circuitry.

29

STIPDC

TIP DC Sense

Analog current input used to sense voltage on the TIP lead.

30

STIPAC

TIP AC Sense Input

Analog ac input used to detect voltage on the TIP lead.

Pin #

Pin Name

Description