Datasheet

FAB3103 • Rev. 1.0.2 2

FAB3103 — 2.3 Watt Class-D Audio Amplifier with Integrated Boost Regulator and Automatic Gain Control

Pin Configuration

Figure 2. Pin Assignments (Top View)

Pin Definitions

WLCSP Name Type Description

B1 OUT+ Output Positive audio output

C1 OUT- Output Negative audio output

C3 IN+ Analog Input Positive audio input

D3 IN- Analog Input Negative audio input

C2 EN CMOS Input

Shutdown signal for boost regulator and amplifier:

VBATT=enabled, PGND=shutdown (internal 300K pull-down)

B2 AGCT Analog Input AGC trip-point setting

B3 VBATT Power Supply voltage

A2 SW Power Boost regulator switching node

A1 PVDD Power Boost regulator output

A3 BGND Ground Boost regulator ground – connect to PGND and AGND with a ground plane.

D1 PGND Ground Power ground – connect to BGND and AGND with a ground plane.

D2 AGND Ground Analog ground – connect to BGND and PGND with a ground plane.