UTC8227

UTC8227 LOW FREQUENCY POWER AMPLIFIER DESCRIPTION LI NEAR I NTEGRATED CI RCUI T The UTC8227 is the audio power amplifier with built-in two channel developed for portable radio cassette tape recorder with power ON/OFF switch. FEATURES *Wide operating supply voltage: Vcc=5~12V *Low quiescent supply current (Icc=21mA,typical,at Vcc=9V ,Vi=0) *Output power Po=2.50W/CH at Vcc=9V,RL=4ohm ,f=1kHz,Thd=10% *Soft Clip *Built-in Thermal shut-down protection circuit *Stand-by Switch HDIP-12 TEST CIRCUIT SW1 1000µF 100µF Vcc2 Vcc1 1 12 3 Boot strap 1 100µF 1000µF Input 1 6 NF1 47µF 120Ω Output 1 5 9 0.015µF 45Ω 30kΩ 2 RL Ripple 47µF 7 Input 2 NF2 100µF 10 11 Boot strap 2 1000µF Output 2 8 47µF 120Ω 0.015µF 45Ω 30kΩ RL TAB Pre GND 4 Power GND YOUW ANG ELECTRONI CS CO. LTD 1 UTC8227 Characteristic Supply Voltage Output Current Power Dissipation(note) Operating Temperature Storage Temperature Note: Value for mounting on PC board LI NEAR I NTEGRATED CI RCUI T Symbol Vcc Io Pd Topr Tstg ABSOLUTE MAXIMUM RATINGS(Ta=25°C) Value 20 2.5 4 -20 ~ +75 -55 ~ +150 Unit V A W °C °C ELECTRICAL CHARACTERISTICS (Ta=25°C,Vcc=9V,RL=4Ω,Rg=600Ω,f=1kHz,unless otherwise specified) Characteristic Quiescent current Output Power Total Harmonic Distortion Voltage Gain Input Impedance Output Noise Voltage Ripple Rejection Ratio Cross Talk Input Offset Voltage Standby Current Symbol Icc Po THD Gv1 Gv2 Rin Vno R.R C.T V7,8 Vi=0 Test Conditions THD=10%,RL=4Ω THD=10%,RL=3Ω Po=0.4W/CH...