UTCCW574

UTC CW574 LINEAR INTEGRATED CIRCUIT 33V COLOR TV VOLTAGE REGULATOR DESCRIPTION www.DataSheet4U.com The UTC CW574 is a parallel voltage regulator which provides stable harmonious voltage for high frequency tuner head of color TV. FEATURES *Low temperature coefficient. *Low dynamic resister. *Typical voltage: 33V. 1 2 TO-92-2 TO-92-2: 1: Output 2: GND BLOCK DIAGRAM 1 2 PIN FUNCTION PIN 1 2 SYMBOL GND OUT FUNCTION GROUND OUTPUT (31~35V) ABSOLUTE MAXIMUM RATINGS (Tamb=25°C) PARAMETER Stable Current Power Dissipation Operating Temperature Storage Temperature SYMBOL Iz PD Tamb TSTG MIN. MAX. 10 200 UNIT mA mW °C °C -20 -40 75 125 UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R111-008,B UTC CW574 PARAMETER Stable Voltage Dynamic Resister Stable Current And Temperature Characteristics LINEAR INTEGRATED CIRCUIT SYMBOL Vz Rz ∆Vz ELECTRICAL CHARACTERISTICS (Tamb=25°C) TEST CONDITIONS Iz=5mA Iz=5mA,IAC=0.5mA,f=1kHz Iz=5mA, Tamb= -20~75°C -1.0 MIN 31 TYP 33 10 MAX 35 25 1.0 UNIT V Ω mV/°C www.DataSheet4U.com APPLICATION CIRCUIT 115V Vi Rs A R2 R3 R10 TUNER CONTROL 2 33V 1 AGC Bu BV BL AFT VT +B R11 R12 IE The UTC CW574 is a parallel voltage regulator which provides stable harmonious voltage for high frequency tuner head of color TV. The main power 115V goes through Rs resister to position 2 of UTC CW574 then the position A with 33V provides stable voltage for control circuit of high frequency tuner. The circuit from R3 to R10 is potential meter for tuning, acc...