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| 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 VREFVREF+ VCC 4 1k 1 2 Reference Voltage 3 Start Circuit 10k 10k Motor 7 8 Phase 5 GND 6 GND ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER Supply Voltage Terminal Voltage Terminal 8 Voltage Supply Current Terminal 7 Current Power Dissipation DIP-8 SOP-8 Operating Temperature Storage Temperature *Test Time<5s SYMBOL VCC Vn(n=1,2,3,4) V8 ICC* I7 PD VALUE 7.5 -0.5 to 7.5 -0.5 to 1 1000 1000 750 360 -20 to 70 -40 to 150 UNIT V V V mA mA mW TOPR TSTQ C C Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: ic@wingshing.com AN6650 PARAMETER Quiescent Circuit Current Reference Voltage Start Voltage Saturation Voltage Reference Voltage Characteristics LINEAR INTEGRATED CIRCUIT SYMBOL ICC VREF VCC(S) V(SAT) VREF VREF VCC ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=6V, f=1KHZ, unless otherwise specified) TEST CONDITIONS VCC=3V VCC=3VR2-1>10k 30mAcurrent flow to Ra VCC=1.8V,Ra=4.7 VCC=1.8V~7.0V 1.20 MIN TYP 2 1.28 1.0 0.2 0.1 MAX 3 1.35 1.2 0.5 1.25 UNIT mA V V V %/V TEST CIRCUIT 1 4 2 2 1 -1.25 Output Voltage Characteristics VA VA VCC VCC=1.8V~7.0V -1.2 0.1 1.2 %/V 3 Reference Voltage Current Characteristics Reference Voltage Temperature Characteristics VREF VREF I7 VREF VREF TA I7=1mA~20mA -0.2 0.01 0.2 %/mA 4 TA=-20~+60C,VCC=3.0V 0.01 %/C 4 TEST CIRCUIT V 8 7 6 5 Ra 4.7 8 7 6 5 0.1 F 0.1 F 1 2 3 4 1 F 9.1k 1 1k 2 0.47 3 4 1 F 10k A VCC VREF VREF VCC FIG.1 (Icc, VCC ) FIG 2 (Vcc(s),Vsat) AN6650 LINEAR INTEGRATED CIRCUIT 8 7 6 5 8 7 6 5 Va Ra 4.7 0.1 F 0.1 F 1 9.1k 1k 2 10 3 4 1 F A 9.1k 1 1k 2 10 3 4 1 F VCC V FIG 4 VCC FIG.3 |
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