TDA7263

TDA7263 ® 12 +12W STEREO AMPLIFIER WITH MUTING WIDE SUPPLY VOLTAGE RANGE HIGH OUTPUT POWER 12+12W @ VS=28V, RL = 8Ω, THD=10% MUTE FACILITY (POP FREE) WITH LOW CONSUMPTION AC SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7263 is class AB dual audio power amplifier assembled in the new Clipwatt package, specially designed for high quality sound application as HI-FI music centers and stereo TV sets. Clipwatt11 ORDERING NUMBER:TDA7263 TEST AND APPLICATION CIRCUIT September 2003 1/8 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDA7263 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Unit 35 V Supply Voltage without Load IO Ptot Output Peak Current (repetitive f >20Hz) 2 A Total Power Dissipation (Tcase = 70°C) 25 W 0 to 70 °C -40 to 150 °C Top Tstg,Tj Operating Temperature Range Storage & Junction Temperature PIN CONNECTION (Top view) BLOCK DIAGRAM 2/8 Value VS TDA7263 THERMAL DATA Symbol Rth j-case Parameter Thermal resistance junction to case Max Value Unit 3 °C/W ELECTRICAL CHARACTERISTICS (Refer to the stereo test and application circuit, VS = 28V; RL = 8Ω; Gv = 30dB; f = 1KHz; Tamb = 25°C unless otherwise specified.) Symbol Parameter Test Condition VS Supply Voltage VO Quiescent Output Voltage Iq Total Quiescent Current PO Output Power (RMS) d = 10% Tamb = 85°C d = 1% Total Harmonic Distortion PO = 1W, f = 1kHz f = 100Hz to 10KHz; PO = 0.1 to 8W CT Cross Talk RS = 10KΩ; f = 1KHz RI Input Resistance fL fH Low Frequency Roll-off (-3dB) High Frequency Roll-off (-3dB) eN Total Input Noise Voltage d Min. Tj Supply Voltage Rejection (each channel) Thermal Shutdown Junction Temperature Max. Unit 30 V 95 mA 13.5 70 10 W W 0.2 0.5 70 100 A Curve; RS = 10KΩ f = 22Hz to 22KHz; RS = 10KΩ RS = 10KΩ; f = 100Hz; Vr = 0.5V V 12 9.5 0.02 RS = 10KΩ; f = 10KHz SVR Typ. 10 dB 60 dB 200 KΩ 40 80 Hz KHz 1.5 3 45 % 10 mV µV 60 dB 145 °C MUTE FUNCTION VTMUTE Mute Threshold VTPLAY Play Threshold ATTAM IqMUTE Mute Attenuation Quiescent Current @ Mute 1 70 1.6 V 4.5 V 100 7 10 dB mA TYPICAL CHARACTERISTICS (referred to the typical Application Circuit, VS = 28V, RL = 8Ω, unless otherwise specified) Figure 1: Output Power vs. Supply Voltage Figure 2: Distortion vs. Output Power 3/8 TDA7263 Figure 3: Quiescent Current vs. Supply Voltage Figure 4: Supply Voltage Rejection vs. Frequency Figure 5: Crosstalk vs. Frequency Figure 6: Output Attenuation & Quiescent Current vs. Vpin3 Figure 7: Total Power Dissipation vs. Output Power Figure 8: Maximum allowable Power dissipation vs. Ambient Temperature 4/8 TDA7263 APPLICATION SUGGESTION The recommended values of the components are those shown on the typical application circuit. Different values can be used; the following table can help the designer. Component R1 and R3 Recomm. Value Purpose 1.5KΩ Close loop gain setting (*) Increase of gain Decrease of gain Increase of gain Larger Than Smaller Than R2 and R4 47Ω Close loop gain setting (*) Decrease of gain R5 and R6 4.7Ω Frequency stability Danger of oscillations C1 and C2 100nF Input DC decoupling Higher SVR Higher low frequency cutoff C3 47µF - Ripple Rejection - Mute time constant Supply Voltage Bypass Increase of the Switch-on time - Degradation of SVR - Worse turn-off pop by muting Danger of oscillations Increase of the Switch-on time Danger of Switch-on time C4 100nF C5 C6 and C7 1000µF 47µF C8 and C9 0.1µF C10 and C11 1000µF Supply Voltage Bypass Feedback input DC decoupling Frequency stability Danger of oscillations Output DC decoupling Higher low-frequency cut-off (*) Closed loop gain must be higher than 26dB Figure 9: P.C. Board and Component Layout (1:1 scale) Note: Use either C1, C2 (Polyester) or C1(*), C2(*) (Electrolytic) but not both. 5/8 TDA7263 BUILT-IN PROTECTION SYSTEMS THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers the following advantages: 1-an overload on the output (even if it is permanent), or an excessive ambient temperature can be easily withstood. 2-the heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature; if for any reason the junction temperature increases up to 145°C. the thermal shutdown simply re- 6/8 duces the output power and therefore the power dissipation. The maximum allowable power dissipation depends upon the thermal resistance junction-ambient. Figure 8 shows the dissipable power as a function of ambient temperature for different heatsink thermal resistance. SHORT CIRCUIT (AC CONDITIONS) The TDA7263 can withstand accidental short circuits across the speaker made by a wrong connection during normal play operation. TDA7263 mm DIM. MIN. TYP. A inch MAX. MIN. TYP. 3.2 B 0.126 1.05 0.15 0.006 D 1.5 0.059 0.49 F 0.77 0.8 F1 0.55 0.019 0.88 0.030 1.57 G1 16.87 0.031 1.7 1.83 0.062 17 17.13 0.664 0.067 0.072 0.669 0.674 12 0.480 H2 18.6 0.732 19.85 0.781 L 17.9 0.700 L1 14.55 0.580 L2 10.7 0.035 0.006 H1 H3 Weight: 1.80gr 0.002 0.15 G OUTLINE AND MECHANICAL DATA 0.041 C E MAX. 11 11.2 0.421 0.433 L3 5.5 0.217 M 2.54 0.100 M1 2.54 0.100 0.441 Clipwatt11 0044448 7/8 TDA7263 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 www.st.com 8/8