KTB8331

December 2021

– Revision 04b

Page 2 of 25

Kinetic Confidential

Pin Descriptions

Pin #

Name

Function

A1, B1, C1

VIN

Voltage Input for buck regulator and IC power

A3, B3

PGND

Power Ground for buck regulator

C3, E1

AGND

Analog Ground for IC power

A2, B2

LX

Inductor Connection for buck regulator

E3

VOUT

Output Voltage sense input

D2

EN

Chip Enable logic input

E2

SCL

I2C Clock digital input

D3

SDA

I2C Data digital I/O

C2

IRQ

̅̅̅̅̅̅

Interrupt Request open-drain output. If not used, tie to AGND or PGND.

D1

VSEL

DVS Voltage Select and Auto-Skip vs. Forced-PWM Mode Select logic input

Pinout Diagram

WLCSP-15

VIN

VIN

IRQ

EN

SCL

AGND

SDA

VOUT

PGND

LX

PGND

VSEL

A

B

C

D

E

1

2

3

TOP VIEW

TOP VIEW

LX

VIN

AGND

15-Bump 1.340mm x 2.045mm x 0.62mm

WLCSP Package, 0.4mm pitch

Top Mark

WW = Device Code,

XX = Date Code, YY = Assembly Code,

ZZZZ = Serial Number