Document
IR43x1
Features
Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package
High peak music power output No mechanical heatsink required Split or single power supply Differential or single-ended input Over-current, over-temperature and under
voltage protections with self-reset function Start and stop click noise reduction High noise immunity RoHS compliant
Typical Applications
Home theatre systems Docking station audio systems PC audio systems Musical instruments Karaoke amplifiers Game consoles Powered speaker systems General purpose audio power amplifiers
Product Summary
Topology
*IR4301 Output power (Typical, THD+N=10%)
*IR4321 Output power (Typical, THD+N=10%)
*IR4311 Output power (Typical, THD+N=10%) *Residual noise (AES-17, IHF-A, typical) *THD+N (1kHz, 1W, 4 Ω, typical) * In typical application example
Package
Half-Bridge, Full-Bridge 160 W/ 4 Ω 120 W/ 3 Ω 90 W/ 4 Ω 135 W/ 2 Ω 35 W/ 4 Ω 45 W/ 3 Ω
250 μVrms
0.02 %
Typical Connection
INPUT
VAA GND
IN+ INCOMP CSD VSS
CSH
VCC
VB COM
5x6mm PQFN22
+B VP
VS
Speaker
VN
VCC
-B
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April 22, 2013
Table of Contents
Typical Connection Diagram Qualification Information Absolute Maximum Ratings Recommended Operating Conditions Electrical Characteristics Functional Block Diagram Input/Output Pin Equivalent Circuit Diagram Lead Definitions Lead Assignments Package Details Part Marking Information Ordering Information
IR43x1
Page
1 4 5 7 8 11 12 13 13 14 15 15
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April 22, 2013
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+ INCOMP CSD VSS
CSH
VCC
VB COM
VAA
CSH
VB
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
3. Single Power Supply
IR43x1
VAA
CSH
VB
VP
GND
IN- IN+ IN+ IN-
COMP
Speaker
VS
+Vbus
CSD
VSS VCC
COM
VN
VIRTUAL GND
VCC
Qualification Information†
Qualification Level
Moisture Sensitivity Level
ESD
Machine Model Human Body Model
IC Latch-Up Test RoHS Compliant
Industrial††
Comments: This family of ICs has passed JEDEC’s Industrial qualification. IR’s Consumer qualification level is granted by extension of the higher Industrial level.
MSL2 (per IPC/JEDEC J-STD-020C)
Class B (per JEDEC standard EIA/JESD22-A115)
Class 2 (per EIA/JEDEC standard JESD22-A114)
Class I, Level A (per JESD78)
Yes
† Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ †† Higher qualification ratings may be available should the user have such requirements. Please contact
your International Rectifier sales representative for further information. ††† Higher MSL ratings may be available for the specific package types listed here. Please contact your
International Rectifier sales representative for further information.
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April 22, 2013
IR43x1
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM=VN; all currents are defined positive into any lead. The Thermal Resistance and Power Dissipation ratings are measured under board mounted and still air conditions.
Symbol
VP
VB
VCSH VS VCC
VAA
VSS VIN+ IIN VCSD VCOMP IAAZ ISSZ ICCZ IBSZ dVS/dt dVSS/dt
Id@ 25ºC
Id@ 100ºC
IDM
Pd
Definition
VP pin positive power supply rail voltage
High side floating supply voltage CSH pin input voltage High side floating supply voltage†† Low side supply voltage†† Floating input positive supply voltage††
Floating input negative supply voltage††
IR4301 IR4321 IR4311 IR4301 IR4321 IR4311
IR4301 IR4321 IR4311
Floating input supply ground voltage Input current between IN- and IN+ pins†
CSD pin input voltage
COMP pin input voltage
Floating input supply zener clamp current†† Floating input negative supply zener clamp current†† Low side supply zener clamp current†††
Floating supply zener clamp current†††
Allowable Vs voltage slew rate Allowable Vss voltage slew rate†††
Continuous output current, from VP to VS, VS to VN, VCC=10V, VB-VS=10V
IR4301 IR4321 IR4311
Continuous output current, from VP to VS, VS to VN, VCC=10V, VB-VS=10V
IR4301 IR4321 IR4311
Pulsed output current, from VP to VS, VS t.