TDA W MONO CLASS-D AMPLIFIER 18W OUTPUT POWER:

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1 TDA MONO CLASS-D AMPLIFIER 18 OUTPUT POER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY IDE SUPPLY VOLTAGE RANGE (UP TO ±25V) SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA481 is an audio class-d amplifier assembled in Multiwatt15 package specially designed for high efficiency applications mainly for TV and Home Stereo sets. Figure 1: Test and Application Circuit. R2 10K +5V R1 10K R3 30K ST-BY MUTE C1 ST-BY/ MUTE µf IN1 9 IN1 - PRE C2 0.33µF C3 + C4 4.nF 1nF 5 FEEDCAP SGN-GND -VCC (Pin 14,15) N.C. C5 V CC PO +VCC C6 V CC SIGN - PM ,15 FREQ -V CC SIGN C 2200µF BOOT OUT VREG Multiwatt15 ORDERING NUMBER: TDA481 BOOTDIODE C11 C 560pF R5 150Ω L1 60µH C14 40nF C15 8Ω C8 20pF R4 KΩ (R F ) -VCC D96AU534C C9 C µF September /6

2 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V CC DC Supply Voltage ±25 V P tot Power Dissipation T case = 0 C 35 T stg, T j Storage and Junction Temperature 40 to 150 C V FREQ Maximum Voltage Across RF (pin 6) 8 V T op Operating Temperature Range 0 to 0 C ESD Max ESD On Pins ±1.2 KV PIN CONNECTION (Top view) THERMAL DATA Symbol Parameter Typ. Max. Unit R th j-case Thermal Resistance Junction-case C/ PIN FUNCTIONS TAB CONNECTED TO PIN 8 N. Name Function OUT BOOTDIODE BOOT NC FEEDCAP FREQ SGN-GND V CC SIGN IN ST-BY/MUTE +V CC SIGN VREG +V CC PO PM 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 POER SUPPLY NEGATIVE POER SUPPLY (to be connected to pin via CS) NEGATIVE POER SUPPLY (to be connected to pin via CS) D96AU535A +V CC PO VREG +V CC SIGN ST-BY/MUTE IN -V CC SIGN SGN-GND FREQ FEEDCAP N.C. BOOT BOOTDIODE OUT 2/6

3 ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VCC = ±18V; RL = 8Ω; RS = 50Ω; RF = KΩ; Demod.. filter L = 60µH, C = 40nF; f = 1KHz; Tamb = 25 C unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit V S Supply Range ±10 ±25 V I q Total Quiescent Current R L =, no LC filter ma V OS Output Offset Voltage PLAY condition mv P O Output Power THD = 10% THD = 1% P O Output Power V CC = ±15V; R L = 4Ω THD = 10% THD = 1% (*) P D Maximum Dissipated Power V CC = ±18V; R L = 8Ω; R f = KΩ P Ο = 18 THD 10% η Efficiency P O P O + P D P O P I (**) V CC = ±18V; R L = 8Ω; R f = KΩ P Ο = 18 THD 10% % THD Total Harmonic Distortion R L = 8Ω; P O = % I max Overcurrent Protection R L = A Threshold T j Thermal Shut-down Junction Temperature 150 C G V Closed Loop Gain db e N Total Input Noise A Curve f = 20Hz to 22KHz µv µv V CCTOT MAX Maximum Total V CC Protection 50 V R i Input Resistance kω SVR Supply Voltage Rejection f = 100Hz; V r = db T r, T f Rising and Falling Time 50 ns R DSON Power Transistor on Resistance 0.4 Ω F S-OP Switching Frequency Operative KHz Range F S Switching Frequency KHz B F Zero Signal Frequency 1.4x10 9 HzΩ Constant (***) R F Frequency Controller Resistor 14 KΩ Range (****) MUTE & STAND-BY FUNCTIONS V ST-BY Stand-by range 0.8 V V MUTE Mute Range V V PLAY Play Range (1) 4 V A MUTE Mute Attenuation db I qst-by Quiescent Stand-by 3 5 ma *: The output LC filter must be changed to: L = 30µH; C = 1µF **: P O = measured across the load using the following inductor: COIL 580 MPPA2 (magnetics) TURNS: 28 1mm ***: The zero-signal switching frequency can be obtained using the following expression: F S = B F/R F ****: The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself (1) for V10 >5.2V, an input impedance of 10KΩ is to be considered 3/6

4 Figure 2: Recommended P.C. Board and Component Layout of the Circuit of Figure 1 (1.25:1 scale) Note: Capacitor C5 must be as close as possible to device s pins 16 and 1 4/6

5 DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A B C D E F G G H H L L L L L L M M S S Dia OUTLINE AND MECHANICAL DATA Multiwatt15 (Vertical) J 5/6

6 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 2003 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia Belgium - Brazil - Canada - China Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States 6/6

TDA W MONO CLASS-D AMPLIFIER 1 FEATURES 2 DESCRIPTION. Figure 1. Package 25W OUTPUT POWER:

TDA W MONO CLASS-D AMPLIFIER 1 FEATURES 2 DESCRIPTION. Figure 1. Package 25W OUTPUT POWER: 25 MONO CLASS-D AMPLIFIER 1 FEATURES 25 OUTPUT POER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY IDE SUPPLY VOLTAGE RANGE (UP TO ±25V) SPLIT SUPPLY OVERVOLTAGEPROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT