UTC6650 LINEAR INTEGRATED CIRCUIT MOTOR SPEED CONTROL CIRCUIT DESCRIPTION The UTC6650 is a monolithic integrated circuit designed for the tape recorder. FEATURES *Wide operating supply voltage:Vcc=1.8V- 7V *Few external components *Easy Speed control mode DIP-8 BLOCK DIAGRAM COMP. INPUT VREF- 4 1 VREF+ VCC 2 3 Reference Voltage 1kΩ Start circuit 10kΩ MOTOR 7 8 5 6 PHASE GND GND YOUW ANG ELECTRONICS CO.LTD 1 UTC6650 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25°C) Characteristic Supply Voltage Terminal Voltage Terminal 8 Voltage Supply Current Terminal 7 Current Power Dissipation Operating Temperature Storage Temperature Symbol Value Unit VCC Vn(n=1,2,3,4) V8 Icc I7 PD Topr Tstg 7.5 -0.5~7.5 -0.5~1 1000 1000 750 -20 +70 -40 +150 V V V mA mA mW °C °C ELECTRICAL CHARACTERISTICS (Ta=25°C,VCC=6V,f=1kHz,unless otherwise specified) Test Characteristic Quiescent Circuit Current Reference Voltage Start Voltage Saturation Voltage Reference Voltage Characteristics Output Voltage Characteristics Reference Voltage Current Characteristics Reference Voltage Temperature Characteristics Symbol ICC VREF VCC(S) VSAT VREF VREF Min Units circuit Typ Max 3 1.35 1.2 0.5 1.25 mA V V V %/V 1 4 2 2 1 VCC=3V VCC=3VR2-1>10kΩ 30mA current flow to Ra VCC=1.8V,Ra=4.7Ω VCC=1.8V~7.0V -1.25 2 1.28 1.0 0.2 0.1 VCC=1.8V~7.0V -1.2 0.1 1.2 %/V 3 I7=1mA~20mA -0.2 0.01 0.2 %/mA 4 %/°C 4 1.20 VCC VA VA Test Conditions VCC VREF VREF I7 TA=-20~+60°CVCC=3.0V VREF VREF 0.01 TA YOUW ANG ELECTRONICS CO.LTD 2 UTC6650 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT V 8 7 6 5 8 7 6 5 1 2 3 4 Ra 4.7Ω 0.1µF 1 2 3 0.1µF 4 1µF 10kΩ 0.47Ω 1kΩ 9.1kΩ 1µF A VCC VCC Fig.1 8 7 6 5 1 2 3 4 8 7 6 5 1 2 3 4 Ra 0.1µF 0.1µF A 9.1kΩ 10Ω VCC V Fig.3 YOUW ANG ELECTRONICS CO.LTD 1µF 10Ω 1kΩ 1µF 1kΩ 4.7Ω 9.1kΩ Va Fig.2 VCC Fig.4 3 UTC6650 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT 7 6 5 0.1µF UTC6650 1 2 3 4 9.1kΩ 1kΩ 1000pF 0.4Ω 3Ω 510Ω Vcc YOUW ANG ELECTRONICS CO.LTD 1µF M Ro=4Ω 8 4