TEA2025D UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD TEA2025D LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 8 Copyright © 2005 Unisonic Technologies Co., Ltd QW-R107-017,B STEREO AUDIO AMPLIFIER „ DESCRIPTION The UTC TEA2025D is a mono lithic integrated circuit that intended for use as dual or bridge power audio amplifier portable radio cassette players. „ FEATURES * Dual or bridge connection modes. * Few external components. * Supply voltage down to 3V. * High channel separation. * Very low switch on\\off noise. * Max gain of 45dB with adjust external resistor. * Soft clipping. * Thermal protection. * 3V<V CC<15V * P=2*1W,VCC=6V,RL=4Ω * P=2*2.3W,VCC=9V,RL=4Ω * P=2*0.1W,VCC=3V,RL=4Ω SOP-20 *Pb-free plating product number: TEA2025DL ■ ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing TEA2025D-S20-R TEA2025DL-S20-R SOP-20 Tape Reel TEA2025D-S20-T TEA2025DL-S20-T SOP-20 Tube TEA2025DL-S20-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) S20: SOP-20 (3) L: Lead Free Plating , Blank: Pb/Sn

TEA2025D LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 8 www.unisonic.com.tw QW-R107-017,B ■ PIN CONFIGURATION OUT2 BOOT2 GND GND GND GND FEEDBACK IN 2(+) SVR BRIDGE GND(Sub) IN 1(+) FEEDBACK GND GND GND GND BOOT1 OUT1 Vcc

TEA2025D LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 8 www.unisonic.com.tw QW-R107-017,B ■ BLOCK DIAGRAM DECOUPLING START CIRCUIT THERMAL PROTECT GND(Sub ) IN 1+ FEED FEED GND GND GND GND BOOT 1 BOOT 2 OUT1 OUT2 IN 2+ SVR 50Ω 50Ω 10kΩ 10kΩ 5kΩ 50Ω Vss + BRIDGE

TEA2025D LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 8 www.unisonic.com.tw QW-R107-017,B ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage V SS 15 V Output Peak Current I O(PEAK) 1.5 A Junction Temperature T J 150 °C Storage Temperature T STG 150 °C Note Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ■ THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Thermal Resistance Junction-case θJC 15 °C/W Thermal Resistance Junction-ambient θJA 65 °C/W Note: The θJA is measured with 4 cm2 copper area heatsink. ■ ELECTRICAL CHARACTERISTICS (Ta=25°C, VCC=9V, Stereo unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage V SS 3 12 V Quiescent Current I Q 35 50 mA Quiescent Output Voltage V OUT 4.5 V Stereo 43 45 47 dB Voltage Gain G V Bridge 49 51 53 dB Voltage Gain Difference ∆GV(DIFF) ±1 dB Input Impedance R I 30 k Ω RL=4Ω 0.1 RL=32Ω VSS=3V 0.02 RL=4Ω 0.7 1 RL=8Ω 0.6 RL=16Ω 0.25 RL=32Ω VSS=6V 0.13 RL=4Ω 1.7 2.3 RL=8Ω VSS=9V 1.3 RL=8Ω POUT Stereo 8 (per channel) VSS=12V 2.4 RL=16Ω 0.18 RL=32Ω VSS=3V 0.06 RL=4Ω 2.8 RL=8Ω VSS=6V 1.5 Output Power (d=10%) RL=8Ω POUT Bridge VSS=9V 4.7 W Stereo 0.3 1.5 % Distortion Bridge d V SS=9V; RL=4Ω 0.5 % Supply Voltage Rejection SVR f=100Hz,V R=0.5V,Rg=0 40 46 dB Rg=0 1.5 3 mV Input Noise Voltage eN (IN) Rg=104Ω 3 6 mV Cross-Talk CT f=1KHz, Rg=10K Ω 40 52 dB

TEA2025D LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 8 www.unisonic.com.tw QW-R107-017,B ■ APPLICATION INFORMATION(Cont.) Output Capacitors. The low cut off frequency due to output capacitor depending on the load is given by: FL = 1 2πCOUT *RL With COUT 470µF and RL=4 ohm it means FL=80Hz. Stability A good layout is recommended in order to avoid oscillations. In general, the designer must pay attention on the following points: -Short wires of components and short connections. -No ground loops. -Bypass of supply voltage with capacitors as nearest as possible to the supply I.C. pin. The low value (polyester) capacitors must have good temperature and frequency characteristics. -No sockets. 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: all that happens is that P OUT (and therefore PD) and Id are reduced. APPLICATION SUGGESTION The recommended values of the components are those shown on stereo application circuit of Fig.2 different values can be used, the following table can help the designer. Component Recommended Purpose Larger Than Smaller Than C1,C2 0.22µF Input DC Decoupling in Case of Slider Contact Noise of Variable Resistor C3 100µF Ripple Rejection Degradation of SVR, Increase of THD at Low Frequency and Low Voltage C4,C5 100µF Bootstrap C6,C7 470µF Output DC Decoupling Increase of Low Frequency Cut-off C8,C9 0.15µF Frequency Stability Danger of Oscillations C10,C11 100µF Inverting Input DC Decoup ling Increase of Low Frequency Cut-off

TEA2025D LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 8 of 8 www.unisonic.com.tw QW-R107-017,B ■ TYPICAL CHARACTERISTICS Supply Current vs.Supply Voltage (RL=4Ω) Vss(V) 36 9 STEREO I(mA) Output Voltage vs. Supply Voltage 36 9 12 15 STEREO VOUT(V) Vss(V) Output Power vs. Supply Voltage (THD=10%,f=1KHz) Vss(V) 36 9 0.5 1.5 STEREO PoUT(W) 2.5 3.5 RI=4Ω RI=8Ω RI=16Ω THD vs. Output Power (f=1KHz,Vss=6V) 00 . 20 . 4 0.1 0.80.6 1 PoUT(W) STEREO RI=4Ω RI=8Ω RI=16Ω THD(%) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.