5 Pin Configuration and Functions

Figure 5-1 Package Top Level View Pinout

Pin Functions

PIN		I/O¹	DESCRIPTION
NAME	NO.	I/O¹	DESCRIPTION
AD1	B4	I	I²C address pin LSB.
AD2	B5	I	I²C address pin LSB+1.
BGND	D1	P	Boost ground. Connect to PCB GND plane strongly with multiple vias.
	D2
	D3
DREG	A6	P	Digital core voltage regulator output. Bypass to GND with a capacitor. Do not connect to external load.
FSYNC	A2	I	I²S word clock or TDM frame sync.
GREG	F4	P	High-side gate CP regulator output. Do not connect to external load.
GND	A3	P	Digital ground. Connect to PCB GND plane. Strong connection to ground plane required through multiple vias.
	C2
	C5
IOVDD	A4	P	1.2-V or 1.8-V Digital IO supply. Decouple to GND with capacitor.
IRQZ	B3	O	Open drain, active low interrupt pin. Pull up to IOVDD with resistor if optional internal pullup is not used.
OUT_N	F5	O	Class-D negative output.
OUT_P	F6	O	Class-D positive output.
PGND	D4	P	Class-D Power stage ground. Connect to PCB GND plane strongly through multiple vias.
	D5
	D6
	E4
PVDD	F1	P	Integrated boost output and Class-D power stage supply.
	F2
	F3
SBCLK	A1	I	I²S/TDM serial bit clock.
SCL	B6	I	I²C Clock Pin. Pull up to IOVDD with a resistor.
SDA	A5	IO	I²C Data Pin. Pull up to IOVDD with a resistor.
SDIN	B2	I	I²S or TDM serial data input.
SDOUT	B1	IO	I²S or TDM serial data output.
SDZ	C3	I	Active low hardware shutdown.
SW	E1	P	Boost converter switch input.
	E2
	E3
VBAT	C1	P	Battery power supply input. Connect to 2.5-V to 5.5-V supply and decouple with a cap.
VBAT_SNS	C4	I	Battery sense terminal. Connect to 1S or 2S battery supply for remote battery sensing. Ground the pin if remote sensing is not used.
VDD	C6	P	Analog, digital power supply. Connect to 1.8-V supply and decouple to GND with cap.
VSNS_N	E5	I	Voltage sense negative input. Connect to speaker negative terminal as close to speaker as possible. Add series resistor if EMI filter is used.
VSNS_P	E6	I	Voltage sense positive input. Connect to speaker positive terminal as close to speaker as possible. Add series resistor if EMI filter is used.

I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.