IR43X2 Datasheet, PDF (7/17 Pages) International Rectifier – channel integrated analog input Class D audio amplifier in a small 7 x 7 mm PQFN44 package

IR43x2
Recommended Operating Conditions
For proper operation, the device should be used within the recommended conditions below. The Vss and Vsn
offset ratings are tested with supplies biased at COM=VN1=VN2, V_AA-V_SS=9.6V, V_CC=12V and V_Bn-V_Sn=12V. All
voltage parameters are absolute voltages referenced to COM; all currents are defined positive into any lead.
Symbol Definition
Min
Max Units
IR4302
-
46
Positive power supply voltage, n=1-2, without
heatsink
IR4322
-
46
IR4312
-
32
V_Pn
IR4302
-
62
Positive power supply voltage, n=1-2, with
heatsink
IR4322
-
50
IR4312
-
32
V_Bn
High side floating supply absolute voltage, n=1-2
V_Sn +10
V_Sn +14
IR4302
†
V_Sn
High side floating supply offset voltage, n=1-2
IR4312
†
80
V
40
V_AA
Floating input positive supply voltage^††
V_SS + 4.5 V_SS + 15
V_SS
Floating input negative supply voltage^††
IR4302
0
80
IR4322
0
60
IR4312
0
I_AAZ
Floating input supply zener clamp current^††
1
I_SSZ
Floating input negative supply zener clamp current^††
1
40
15
mA
15
V_CC
Low side fixed supply voltage
10
15
V_IC
IN- and IN+ pins common mode input voltage
V_IN-n
Inverting input voltage, n=1-2
V_SS + 2
V_AA - 2
V_IN+ -0.5 V_IN+ +0.5
V
V_CSD
CSD pin input voltage
V_SS
V_AA
V_COMPn
COMP pin input voltage, n=1-2
V_SS
V_AA
C_COMPn
COMP pin phase compensation capacitor to GND , n=1-2
1
-
nF
V_CSHn
CSH pin input voltage, n=1-2
V_Sn
V_Bn
V
dVss/dt Allowable Vss voltage slew rate upon power-up^{††â€} 
-
50
V/ms
f_SW
Switching Frequency
T_A
Ambient Temperature
-
500
kHz
-40
100
qC
Logic operational for Vs equal to –5V to +80V. Logic state held for Vs equal to –5V to –V_BS.
†
†† GND input voltage is limited by I_AAZ and I_SSZ.
††† Vss ramps up from 0V to 70V.
7 www.irf.com © 2012 International Rectifier
January 2, 2013