AN6650 LINEAR INTEGRATED CIRCUIT MOTOR SPEED CONTROL CIRCUIT DESCRIPTION The AN6650 is a monolithic integrated circuit, designed for the tape recorder. SOP-8 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 3 2 Reference Voltage 1kΩ Start Circuit 10kΩ 10kΩ Motor 7 8 5 6 Phase GND GND ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Supply Voltage Terminal Voltage Terminal 8 Voltage Supply Current Terminal 7 Current Power Dissipation DIP-8 SOP-8 Operating Temperature Storage Temperature SYMBOL VALUE UNIT VCC Vn(n=1,2,3,4) V8 ICC* I7 PD 7.5 -0.5 to 7.5 -0.5 to 1 1000 1000 V V V mA mA mW TOPR TSTQ 750 360 -20 to 70 -40 to 150 *Test Time<5µs Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: [email protected] °C °C AN6650 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Ta=25°C, Vcc=6V, f=1KHZ, unless otherwise specified) PARAMETER SYMBOL Quiescent Circuit Current Reference Voltage Start Voltage Saturation Voltage Reference Voltage Characteristics TEST CONDITIONS ICC MIN TYP MAX UNIT TEST CIRCUIT 2 3 mA 1 1.35 1.2 0.5 1.25 V V V %/V 4 2 2 1 VCC=3V VREF VCC(S) V(SAT) ∆VREF VREF VCC=3V，R2-1>10kΩ 30mAcurrent flow to Ra VCC=1.8V,Ra=4.7Ω VCC=1.8V~7.0V 1.20 -1.25 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 ∆VCC Output Voltage Characteristics ∆VA VA ∆VCC Reference Voltage Current Characteristics ∆VREF VREF Reference Voltage Temperature Characteristics ∆VREF VREF ∆I7 TA=-20~+60°C,VCC=3.0V 0.01 ∆TA TEST CIRCUIT V 8 7 6 5 Ra 4.7Ω 0.1 µF 1 2 3 8 7 6 5 1 2 3 4 0.1 µF 4 10kΩ 0.47Ω 1kΩ 9.1kΩ 1 µF A VCC VCC ∆VREF VREF FIG.1 (Icc, ∆VCC ) FIG 2 (Vcc(s),Vsat) 1 µF 7 6 5 1 2 3 4 0.1 µF 8 7 6 5 1 2 3 4 0.1 µF A 9.1kΩ 10Ω VCC FIG.3 1 µF 1kΩ Ra 4.7Ω 8 9.1kΩ Va LINEAR INTEGRATED CIRCUIT 10Ω 1kΩ AN6650 V VCC FIG 4 1 µF