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Diodes Semiconductor Electronic Components Datasheet

PAM8902A Datasheet

MONO CLASS-D AUDIO AMPLIFIER

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A Product Line of
Diodes Incorporated
PAM8902A
30 VPP MONO CLASS-D AUDIO AMPLIFIER FOR
PIEZO/CERAMIC SPEAKERS WITH ANTI-SATURATION
Description
The PAM8902A is a mono, Class-D audio amplifier with integrated
boost convertor designed for piezo and ceramic speakers. The
PAM8902A is capable for driving a ceramic/piezo speaker with
30VPP(0.6Vrms) from a 3.6V power supply. The PAM8902A's boost
converter operates at a fixed frequency of 1.5MHz and provides a
17.5V supply with a minimum number of external components. The
three gain mode of 18dB, 22dB and 26dB is easy for using. PAM
unique ant i -saturat ion technology which detects output signal clip
due to the over level input signal suppress the output signal clip
automatically. PAM8902A features an integrated audio low pass filter
that rejects high frequency noise, thus improving audio fidelity.
PAM8902A also provides thermal, over current, under and over
voltage protection.
The PAM8902A is available in a 16-ball 1.95mm x 1.95mm CSP
package and 16-pin QFN4x4 package.
Pin Assignments
Features
Supply Voltage Range from 2.7V to 5.5V package.
30VPP Output Load Voltage from a 2.7V Supply
Integrated Boost Converter Generates 17.5V Supply
Programmable Soft-Start
Unique Anti-Saturation Function
Small Boost Converter Inductor
Selectable Gain of 18dB, 22dB, and 26dB
(Refer to “Application Notes”)
Selectable Boost output voltage of 8V, 12V, and 17.5V
Low Shutdown Current: <1µA
Build in Thermal, OCP, UVLO, OVP
Available in Space Saving Packages:
ƒ 16-ball 1.95mm x 1.95mm CSP package
ƒ 16-pin QFN4x4 package
Applications
Wireless or Cellular Handsets
Portable DVD Player
Personal Digital Assistants (PDAs )
Electronic Dictionaries
Digital Still Cameras
PAM8902A
Document number: DSxxxxx Rev. 1 - 3
1 of 12
www.diodes.com
February 2013
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

PAM8902A Datasheet

MONO CLASS-D AUDIO AMPLIFIER

No Preview Available !

Typical Applications Circuit
A Product Line of
Diodes Incorporated
PAM8902A
Pin Descriptions
Bump
(CSP)
A1
A2
A3
A4
B1
B2
B3
B4
C1
C2
C3
C4
D1
D2
D3
D4
Pin Number
(QFN)
13
1
2
4
15
3
5
6
14
11
7
8
13
12
10
9
Pin
Name
PVCC
VOUT
SW
PGND1
OUTP
VSET
COMP
AVDD
OUTN
GSET
VCM
AGND
PGND2
ENA
INN
INP
Function
Audio Amplifier Power Supply
Boost Convertor Output
Boost Convertor Switching Node
Boost Convertor Power Ground
Positive Differential Audio Output
Boost Convertor Output Voltage Setting(8V,12V,17.5V)
Boost Convertor Compensation
Power Supply
Negative Differential Audio Output
AmplifierGain Setting. (Refer to "Application Notes")
Common Mode Bypass Cap
Analog Ground
Class D PowerGround
Whole Chip Enable
Negative Differential Audio Input
Positive Differential Audio Input
PAM8902A
Document number: DSxxxxx Rev. 1 - 3
2 of 12
www.diodes.com
February 2013
© Diodes Incorporated


Part Number PAM8902A
Description MONO CLASS-D AUDIO AMPLIFIER
Maker Diodes
Total Page 12 Pages
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