FAB3103 Datasheet, PDF (2/13 Pages) Fairchild Semiconductor – 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 300KΩ 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.
© 2011 Fairchild Semiconductor
FAB3103 • Rev. 1.0.2
2
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