UTC820

UTC820 DESCRIPTION LI NEAR I NTEGRATED CI RCUI T 1.2W AUDIO POWER AMPLIFIER The UTC820 is a monolithic integrated circuit audio amplifier. It is designed for audio frequency Class B amplifiers. FEATURES *Wide operating supply voltage:Vcc=3~14V *Low quiescent supply current(Icc=4mA,typical) *Medium output power Po=1.2W at Vcc=9V,RL=8ohm ,Thd=10% *Good ripple rejection *Minimum number of external parts required. DIP-8 BLOCK DIAGRAM Ripple Bootstrap Vcc Output 8 7 6 5 CB NF Input GND w ABSOLUTE MAXIMUM RATINGS(Ta=25°C) w Characteristic Symbol Vcc Ipeak PD Topr Tstg Value 16 1.5 1.25 -20 ~ +70 -40 ~ +150 Unit V A W °C °C w .D Supply Voltage Output Peak Current Power Dissipation Operating Temperature Storage Temperature at aS hYOUW ee ANG ELECTRONICS CO.LTD t4 U .c om 1 www.DataSheet4U.com 1 2 3 4 UTC820 ELECTRICAL CHARACTERISTICS Characteristic Quiescent circuit current LI NEAR I NTEGRATED CI RCUI T (Ta=25°C,Vcc=9V,f=1kHz,RG=600Ω,RF=120Ω,RL=8Ω,unless otherwise specified) Symbol ICCQ Test Conditions VI=0 Vcc=9V,RL=4Ω,THD=10% Vcc=9V,RL=8Ω,THD=10% Vcc=6V,RL=4Ω,THD=10% Vcc=6V,RL=8Ω,THD=10% Vcc=12V,RL=8Ω,THD=10% Po=500mW RF=0 RF=120Ω RG=10kΩ Min Typ 4 1.6 1.2 0.75 0.5 2 0.3 75 36 5 0.3 Max 12 Units mA 0.9 0.4 Output Power Po W Total Harmonic Distortion Open Loop Voltage Gain Closed Loop Voltage Gain Input Resistance Output Noise Voltage THD Gvo Gvc RI VNO 1.0 39 1.0 33 % dB dB MΩ mW BW(-3dB)=50~20kHz TEST CIRCUIT VCC 100µF/ 16V R3 56Ω...