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TPA3138D2

SLOS993A – MARCH 2018 – REVISED JUNE 2018

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Pin Functions (continued)

PIN

DESCRIPTION

NAME

NO.

MODE_SEL

6

I

Mode select least significant bit. TTL logic levels with compliance to AVDD. Low = BD Mode/UV

Threshold = 7.5 V, High = Low-Idle-Current 1SPW Mode/UV Threshold = 3.4V, Floating = Low-Idle-

Current 1SPW Mode/UV threshold = 3.4V

AVCC

7

P

Analog supply.

GND

8

–

Analog signal ground.

GVDD

9

O

FET gate drive supply. Nominal voltage is 5 V.

PLIMIT

10

I

Power limiter level control. Connect a resistor divider from GVDD to GND to set power limit. Connect

directly to GVDD for no power limit.

RINN

11

I

Negative audio input for right channel. Biased at 2.5 V.

RINP

12

I

Positive audio input for right channel. Biased at 2.5 V.

NC

13

–

No Connect Pin. Can be shorted to PVCC or shorted to GND or left open.

AGND

14

–

Analog signal ground. Connect to the thermal pad.

PVCCR

15, 16

P

Power supply for right channel H-bridge. Right channel and left channel power supply inputs are

connected internally.

BSPR

17

P

Bootstrap supply (BST) for right channel, positive high-side FET.

OUTPR

18

O

Class-D H-bridge positive output for right channel.

GND

19

–

Power ground for the H-bridges.

OUTNR

20

O

Class-D H-bridge negative output for right channel.

BSNR

21

P

Bootstrap supply (BST) for right channel, negative high-side FET.

BSNL

22

P

Bootstrap supply (BST) for left channel, negative high-side FET.

OUTNL

23

O

Class-D H-bridge negative output for left channel.

GND

24

–

Power ground for the H-bridges.

OUTPL

25

O

Class-D H-bridge positive output for left channel.

BSPL

26

P

Bootstrap supply (BST) for left channel, positive high-side FET.

PVCCL

27, 28

P

Power supply for left channel H-bridge. Right channel and left channel power supply inputs are

connected internally.

Thermal Pad

–

Connect to GND for best thermal and electrical performance