Thermal

Protection

Charge

PumpLD

Enable

ControlHP

Enable

ControlLD

External

UVP

Charge

PumpHP

Click&Pop

Suppression

Internal

UVP

Short-Circuit

Protection

Click&Pop

Suppression

Short-Circuit

Protection

OpAmp

LD

OpAmp

LD

OpAmp

HP

OpAmp

HP

DRV604

www.ti.com

SLOS659 – JANUARY 2010

PIN FUNCTIONS (continued)

PIN

DESCRIPTION

NAME

PWP NO.

–HP_R

16

I

Negative input, Headphone Right

OUT_HPR

17

O

Output, Headphone Right

NC

18

No connect

PGND

19

P

Charge Pump Power Ground, Headphone

PVDD_HP

20

P

Headphone Supply Voltage, connect to positive supply, internally connected to pin 23

CP_HP

21

I/O

Charge Pump Flying Capacitor Positive connection, Headphone

CP_LD

22

I/O

Charge Pump Flying Capacitor Positive connection, Line Driver

PVDD_LD

23

P

Line Driver Supply Voltage, connect to positive supply, internally connected to pin 20

PGND

24

P

Charge Pump Power Ground, Line Driver

Ex_UVP

25

I

External Under Voltage Protection

OUT_LDR

26

O

Output, Line Driver Right

–LD_R

27

I

Negative input, Line driver Right

+LD_R

28

I

Positive input, Line driver Right

SYSTEM BLOCK DIAGRAM

PACKAGE

DESCRIPTION

–40°C–85°C

DRV604PWP

28-Pin

(1)

For the most current package and ordering information, see the

Package Option Addendum at the end of this document, or see the

TI Web site at www.ti.com.

Copyright © 2010, Texas Instruments Incorporated

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3

Product Folder Link(s) :DRV604