TDA7851L Datasheet TDA7851L | P1-P3

This is information on a product in full production.

September 2013 Doc ID 022520 Rev 3 1/15

TDA7851L

4 x 48 W MOSFET quad bridge power amplifier

Datasheet  production data

Features

■ Multipower BCD technology

■ High output power capability:

–4 x 48 W/4  Max.

–4 x 28 W/4  @ 14.4 V, 1 kHz, 10 %

–4 x 72 W/2  Max.

■ MOSFET output power stage

■ Excellent 2  driving capability

■ Hi-Fi class distortion

■ Low output noise

■ Standby function

■ Mute function

■ Automute at min. supply voltage detection

■ Low external component count:

– Internally fixed gain (26 dB)

– No external compensation

– No bootstrap capacitors

■ Protections:

– Output short circuit to GND, to V

, across

the load

– Very inductive loads

– Overrating chip temperature with soft

thermal limiter

– Load dump voltage

– Fortuitous open GND

– Reversed battery

– ESD

Description

The TDA7851L is a breakthrough MOSFET

technology class AB audio power amplifier in

Flexiwatt25 package designed for high power car

radio.

The fully complementary P-Channel/N-Channel

output structure allows a rail-to-rail output voltage

swing which, combined with high output current

and minimized saturation losses sets new power

references in the car-radio field, with unparalleled

distortion performances.

'!0'03

Flexiwatt 25

Table 1. Device summary

Order code Package Packing

TDA7851L Flexiwatt 25 Tube

www.st.com

Contents TDA7851L

2/15 Doc ID 022520 Rev 3

Contents

1 Block diagram and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.4 Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

TDA7851L List of tables

Doc ID 022520 Rev 3 3/15

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

TDA7851L

Mfr. #:

Buy TDA7851L

Manufacturer:

STMicroelectronics

Description:

Audio Amplifiers 4 x 50 W MOSFET Quad Bridge Pwr Amplifier

Lifecycle:

New from this manufacturer.

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TDA7851L