TDA7391LVPDUTR datasheet(8/23 Pages) STMICROELECTRONICS

8 / 23 page

Pins description

TDA7391LV

8/23

DocID023014 Rev 3

5, 7

2, 19

OUTPUTS

The output stage is a bridge type able to drive loads as

low as 3.2 Ω. It consists of two class AB fully

complementary PNP/NPN stages fully protected.

A rail to rail output voltage swing is achieved without

need of bootstrap capacitors.

No external compensation is necessary.

1, 10, 11, 20

GND

Power ground.

S-GND

Signal ground.

STANDBY

The device features a standby function which shuts

down all the internal bias supplies when the standby pin

is low. In standby mode the amplifier sinks a small

current (in the range of few μA). When the standby pin is

high the IC becomes fully operational.

SYNC

A resistor (R2) between pin 8 and GND set the charging

current of capacitor C3 (pin 9). The suggested values of

C3 and R2 define the correct timing in order to switch

on/off the amplifier without any pop noise.

MUTE

The pin is connected to a capacitor (C3) tied to GND to

set the mute/standby time.

An automatic mute during turn on/off is provided to

prevent noisy transients.

Table 2. Pins function (continued)

Multiwatt 11

Pin #

PowerSO-20

Pin #

Name

Description

TDA7391LVPDUTR Datasheet(PDF) 8 Page - STMicroelectronics