TDA7482 Fast Delivery |IC PHOENIX CO.,LIMITED

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TDA7482
25W MONO CLASS-D AMPLIFIER
TDA7482
25W MONO CLASS-D AMPLIFIER
25W OUTPUT POWER: =8Ω/4Ω; THD= 10%
HIGH EFFICIENCY
WIDE SUPPLY VOLTAGE RANGE (UP TO
±25V)
SPLIT SUPPLY
OVERVOLTAGEPROTECTION
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
DESCRIPTION
The TDA7482is an audio class-D amplifier as-
sembled in Multiwatt15 package specially de-
signed for high efficiency applications mainly for and Home Stereo sets.
June 1998 60μH
PWM
PRE 0.33μF
IN1 4.7nF
FEEDCAP
OUT
BOOT
C11
100nF
C12
560pF
R5
150Ω
C14
470nF
VREG
C15
100nF 12KΩ
C10
2200μF
C9
100nF
SGN-GND 7
MUTEST-BY 10 13 11
+VCC
ST-BY/
MUTE
C1
2.2
R3
30K
R2
10K VCCSIGN
C7
2200μF
IN1
D96AU538C
-VCC
(Pin 14,15) C6
100nF
C3
1nF
R1
10K
+5V
VCCPOW
N.C. 100nF
BOOTDIODE
C8
270pF 8 14,15
-VCCSIGNFREQ -VCCPOW
(RF) -VCC
Figure1: Test and Application circuit.
ORDERING NUMBER: TDA7482
Multiwatt15
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC DC Supply Voltage ±28 V
Ptot Power Dissipation Tcase =70°C35 W
Tstg,Tj Storage and Junction Temperature –40 to150 °C
VFREQ Maximum Voltage AcrossRF (pin6) 8 V
Top Operating Temperature Range 0to70 °C
ESD Max ESDon Pins ±1.2 KV
THERMAL DATA
Symbol Parameter Typ. Max. Unit
Rth j-case Thermal Resistance Junction-case 1.8 2.5 °C/W
PIN FUNCTIONS Name Function
OUT
BOOTDIODE
BOOT
FEEDCAP
FREQ
SGN-GND
–VCCSIGN
ST-BY/MUTE
+VCCSIGN
VREG
+VCC POW
-VCC POW
-VCC POW
PWM OUTPUT
BOOTSTRAP DIODE ANODE
BOOTSTRAP
NOT CONNECTED
FEEDBACK INTEGRATING CAPACITOR
SETTING FREQUENCY RESISTOR
SIGNAL GROUND
SIGNAL NEGATIVE SUPPLY
INPUT
CONTROL STATE PIN
POSITIVE SIGNAL SUPPLY
INTERNAL VOLTAGE REGULATOR
POSITIVE POWER SUPPLY
NEGATIVE POWER SUPPLY(tobe connectedtopin13via CS)
NEGATIVE POWER SUPPLY(tobe connectedtopin13via CS)
+VCCSIGN
ST-BY/MUTE
-VCCSIGN
SGN-GND
FREQ
FEEDCAP
N.C.
BOOT
BOOTDIODE
OUT
TAB CONNECTEDTOPIN8
-VCCPOW
-VCCPOW
+VCCPOW
VREG
D96AU539A
PIN CONNECTION (Top view)
TDA7482
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ELECTRICAL CHARACTERISTICS (Referto the test circuit, VCC= ±21V;RL =8Ω;RS =50Ω;= 12KΩ; Demod.. filterL= 60μH,C= 470nF;f= 1KHz; Tamb =25°‘C unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit Supply Range ±10 ±25 V Total Quiescent Current RL=∞,NoLC Filter 40 60 mA
VOS Output Offset Voltage Play Condition –70 -30 10 mV Output Power THD= 10%
THD= 1% Output Power RL =4Ω ;VCC= ±16V;
THD= 10%
THD= 1%(*) Maximum Dissipated Power VCC =±21V;RL =8Ω; = 25W THD 10%
3.8 W
Efficiency ≡ PO+PD≡PO (**)
VCC= ±21V;RL =8Ω; = 18W THD 10% %
ηmax Top Efficiency maximum VCC= ±25V;RL =8Ω; = 43W THD 20%
88.5 %
THD Total Harmonic Distortion RL =8Ω;PO= 1W 0.1 %
Imax Overcurrent Protection
Threshold=0 3.5 5 A Thermal Shut-down Junction
Temperature
150 °C Closed Loop Gain 29 30 31 dB Total Input Noise A Curve= 20Hzto 22KHz
VCCTOTMAX Maximum Total VCC Protection 50 V Input Resistance 20 30 kΩ
SVR Supply Voltage Rejection f= 100Hz;Vr=0.5 46 60 dB
Tr,Tf Rising and Falling Time 50 ns
RDSON Power Transistoron Resistance 0.4 Ω
FSW-OP Switching Frequency Operative
Range
100 200 KHz
FSW Switching Frequency 100 120 140 KHz Zero Signal Frequency
Constant (***)
1.4x109 HzΩ Frequency Controller Resistor
Range (****)
712 14 KΩ
MUTE& STAND-BY FUNCTIONS
VST-BY Stand-by range 0.8 V
VMUTE Mute Range 1.8 2.5 V
VPLAY Play Range(1) 4 V
AMUTE Mute Attenuation 60 80 dB
IqST-BY Quiescent Current@ Stand-by 3 5 mA The outputLC filtermustbe changedto:L= 30μH;C= 1μF
**:PO= measured acrossthe load usingthe followinginductor:
COIL 58120 MPPA2 (magnetics) TURNS:28 ∅ 1mm
***: The zero-signal switching frequency canbe obtained usingthe following expression: FSW=BF/RF
****: The maximum valueofRFis relatedtothe maximum possiblevalueforthe voltagedroponRF itself
(1)For V10 >5.2V,an inputimpedanceof 10KΩ istobe considered
TDA7482
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Figure2: Recommended P.C. Board and Component Layoutof the Circuitof Figure1 (1.25:1 scale)
Note: CapacitorC5 mustbeas closeas possible todevice’s pins16and17
TDA7482
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MULTIWATT15 PACKAGE MECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 5 0.197 2.65 0.104 1.6 0.063 1 0.039 0.49 0.55 0.019 0.022 0.66 0.75 0.026 0.030 1.02 1.27 1.52 0.040 0.050 0.060 17.53 17.78 18.03 0.690 0.700 0.710 19.6 0.772 20.2 0.795 21.9 22.2 22.5 0.862 0.874 0.886 21.7 22.1 22.5 0.854 0.870 0.886 17.65 18.1 0.695 0.713 17.25 17.5 17.75 0.679 0.689 0.699 10.3 10.7 10.9 0.406 0.421 0.429 2.65 2.9 0.104 0.114 4.25 4.55 4.85 0.167 0.179 0.191 4.63 5.08 5.53 0.182 0.200 0.218 1.9 2.6 0.075 0.102 1.9 2.6 0.075 0.102
Dia1 3.65 3.85 0.144 0.152
TDA7482
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grantedby implicationor otherwise under any patentor patent rightsof STMicroelectronics. Specification mentionedinthis publicationare
subjectto change without notice. This publication supersedes and replacesall information previously supplied. STMicroelectronics products
arenot authorizedforuseas critical componentsin lifesupport devicesor systems without express written approvalof STMicroelectronics.
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TDA7482
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Partno	Mfg	Dc	Qty	Available	Descript
TDA7482		N/a	1	avai	25W MONO CLASS-D AMPLIFIER