APA2037_09 Datasheet, PDF (1/24 Pages) Anpec Electronics Coropration – 3W Stereo Fully Differential Audio Power Amplifier

APA2037
3W Stereo Fully Differential Audio Power Amplifier
Features
• Operating Voltage: 2.4V~5.5V
• Fully Differential Class-AB Amplifier
• High PSRR and Excellent RF Rectification
Immunity
• Low Crosstalk
• 3W Per Channel Output Power into 3Ω
Load at V =5V
DD
• Thermal and Over-Current Protections
• Built-In Feedback Resistors Eliminate
External Components Counts
• Space Saving Package
– TQFN5x5-20A
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• LCD TVs
• Notebook, PCs
• Portable Devices
General Description
The APA2037 is a stereo, fully differential Class-AB audio
amplifier which can operate with supply voltage from 2.4V
to 5V and is available in a TQFN5x5-20A package.
The built-in feedback resistors can minimize the external
component counts and save the PCB space. High PSRR
and fully differential architecture increase immunity to
noise and RF rectification. In addition to these features, a
short start-up time and small package size make the
APA2037 is an ideal choice for LCD TVs and notebook
PCs and Portable devices.
The APA2037 also integrates the de-pop circuitry that re-
duces the pops and click noises during power on/off and
shutdown mode operation. Both Thermal and over-cur-
rent protections are integrated to avoid the IC being de-
stroyed by over temperature and short-circuit.
The APA2037 is capable of driving 3W at 5V into 3Ω
speaker.
Pin Configuration
Simplified Application Circuit
Left
Channel
Input
Right
Channel
Input
LINN
LOUTP
LINP
LOUTN
APA2037
RINP
ROUTN
RINN
ROUTP
Left
Channel
Speaker
Right
Channel
Speaker
RINP 16
RINN 17
NC 18
RVDD 19
NC 20
TQFN5x5-20A
Top View
10 NC
9 LSD
8 NC
7 LVDD
6 LOUTN
=Thermal Pad (connected the Thermal Pad to
GND plane for better heat dissipation)
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.
Copyright © ANPEC Electronics Corp.
1
Rev. A.3 - Aug., 2009
www.anpec.com.tw