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IR4321MTRPBF Datasheet(PDF) 3 Page - International Rectifier

Part # IR4321MTRPBF
Description  Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR4321MTRPBF Datasheet(HTML) 3 Page - International Rectifier

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IR43x1
3 www.irf.com
© 2013 International Rectifier
Description
The IR43x1 integrates PWM controller and digital audio MOSFETs forming a high performance Class D audio
amplifier. As a result of fully optimized MOSFETs co-packed with a dedicated controller IC, the IR43X1operates
without mechanical heatsink attached in a typical music playback usage. High voltage ratings and noise immunity
in the controller IC ensures reliable operation over various environmental conditions. A small 5x6 mm PQFN
package enhances the benefit of smaller size of Class D topology. The IR43x1 are a lead-free, ROHS compliant.
Typical Connection Diagram
1. Inverting Amplifier
-B
+B
Speaker
VB
VAA
VSS
IN+
IN-
COMP
CSD
COM
VN
VS
VP
VCC
CSH
GND
VCC
INPUT
2. Differential Amplifier
-B
+B
Speaker
VB
VAA
VSS
IN+
IN-
COMP
CSD
COM
VN
VS
VP
VCC
CSH
GND
VCC
IN-
IN+
April 22, 2013


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