UTC386 LINEAR INTEGRATED CIRCUIT LOW VOLTAGE AUDIO POWER AMPLIFIER DESCRIPTION The UTC386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 keep the external part count low, but the additional of external resistor and capacitor between pin 1 and pin 8 will increase the gain to any value up to 200. FEATURES *Battery operation *Minimum external parts *Wide supply voltage range:4V~12V *Low quiescent current drain(4mA) *Voltage gains:20~200 *Ground referenced input *Self -centering output quiescent voltage *low distortion DIP-8 BLOCK DIAGRAM 6 VCC 7 Bypass 8 Gain 15kΩ 1 Gain 15kΩ 5 Output 15kΩ 2 -Input 150Ω 1.35kΩ 50kΩ 1 -Input 2 8 Gain 7 Bypass UTC386 3 +Input 50kΩ Gain 4 GND +Input 3 6 VCC GND 4 5 Output ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) Characteristic Supply Voltage Power Dissipation Input voltage Operating Temperature Storage Temperature Symbol Vcc Pd Vi Topr Tstg Value Unit 15 660 -0.4~+0.4 -20 to 70 -40 to 125 V mW V °C °C YOUW ANG ELECTRONICS CO.LTD 1 UTC386 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Vcc=6V,f=1kHz,Ta=25°C, All voltage referenced to GND unless otherwise specified) Characteristic Quiescent circuit current Symbol Test Condition ICCQ Vi=0 Vcc=6V,RL=8Ω,THD=10% Vcc=9V,RL=16Ω,THD=10% Pin1 and pin 8 open 10µF from pin 1 and pin 8 Pin1 and pin 8 open 10µF fron pin 1 and pin 8 Vcc=6V,RL=8Ω,Po=125mW, f=1kHz, pin1 and pin 8 open Vcc=6V,f=1kHz, Cbypass=10µF, pin1 and pin 8 open Pin2 and pin 3 open Pin1 and pin 8 open Output Power Po Voltage Gain GV Bandwidth BW Total harmonic distortion THD Power supply Volatge Rejection Ratio Input Resistance Input Bias current SVR Ri IBIAS Min Typ. Max Unit 4 325 500 26 46 300 60 8 mA mW mW dB dB kHz kHz 250 24 43 28 49 0.2 % 30 dB 50 250 kΩ nA TYPICAL APPLICATION CIRUIT Fig. 2 GV =200 Fig. 1 GV =20dB Vs Vs 6 6 1 2 Vin UTC386 3 7 10kΩ 4 10µF 1 2 8 5 250µF Vin 3 10kΩ YOUW ANG ELECTRONICS CO.LTD 250µF 5 UTC386 0.05µF 10Ω 8 7 4 bypass 0.05µF 10Ω 2