IR4301M Datasheet, PDF (3/15 Pages) International Rectifier – Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package

IR43x1
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
INPUT
2. Differential Amplifier
VAA
GND
IN+
IN-
COMP
CSD
VSS
CSH
VCC
VB
COM
CSH
VB
VAA
GND
IN-
IN+
IN+
IN-
COMP
CSD
VSS
VCC
COM
+B
VP
VS
Speaker
VN
VCC
-B
+B
VP
VS
Speaker
VN
VCC
-B
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April 22, 2013