Copyright

 ANPEC Electronics Corp.

Rev. A.3 - Apr., 2001

APA4863

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Stereo 2.2W Audio Power Amplifier

Features

•••••

Depop Circuitry Integrated

•••••

Thermal Shutdown Circuitry Integrated

•••••

Bridge-Tied Load (BTL) or Single-Ended

(SE) Modes Operation

•••••

Output Power at 1% THD+N, V

- 2.2W/Ch (typ) into a 3

Ω Load

- 1.8W/Ch (typ) into a 4

Ω Load

- 1.2 W/Ch (typ) into a 8

Ω Load

•••••

Shutdown Control Mode, I

•••••

Output Power (SE) at 0.5% THD+N, V

- 90mW/Ch (typ.) into a 32

Ω Load

•••••

Various Power Packages Available

SOP, TSSOP, TSSOP-P

Applications

•••••

Stereo Audio Power Amplifier for Notebook

Computer

•••••

Portable Televisions

•••••

Portable and Desktop Computers

General Description

Ordering Information

The APA4863 is a stereo bridge-tied audio power am-

plifier in various power packages , including SOP ,

TSSOP and TSSOP-P . When connecting to a 5V volt-

age supply , the APA4863 is capable of delivering

2.2W/1.8W/1.2W of continuous RMS power per chan-

nel into 3

Ω/4Ω/8Ω bridge-tied loads with less than

1% THD+N respectively . When APA4863 operates

in the single-ended load , it is capable of delivering

90mW of continuous RMS power per channel into

32

Ω load . The APA4863 simplifies design and frees

up board space for other features .

The APA4863 also served well in low-voltage appli-

cations , which provides 750mW (1% THD+N) per

channel into 4

Ω loads with a 3.3V supply voltage .

Both of the depop circuitry and the thermal shutdown

protection circuitry are integrated in the APA4863 ,

that reduces pops and clicks noise during power up

and when using the shutdown mode and protects the

chip from being destroyed by over-temperature fail-

ure . To simplify the audio system design in note-

book computer applications , the APA4863 combines

a stereo bridge-tied loads mode for speaker drive and

a stereo single-end mode for headphone drive into a

single chip , where both modes are easily switched

by the HP-IN input control pin signal . For power sen-

sitive applications , the APA4863 also features a shut-

down function which keeps the supply current only

0.5 µA (typ.) .

Package Code

K: SOP

O: TSSOP

R: TSSOP-P*

Temp. Range

I : -40 to 85 C

Handling Code

TU : Tube

TR : Tape & Reel

TY: Tray

APA4863

Handling Code

Temp. Range

Package Code

°

* TSSOP-P is a standard TSSOP package with a thermal pad exposed on the bottom of the package.