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| ICs for Motor AN6651 Motor Control Circuit s Overview The AN6651 is an IC designed for the rotating speed control of a compact DC motor which is used for a tape recorder, record player, etc. 8.0 - 0.1 3.05 + 0.5 Unit : mm 3.8 1.94 1234 1.778 1.778 5.334 1234 s Features * Small four-lead plastic package for compact motor. Fewer external parts low reference voltage (1.0V typ.), wide motor speed setting *Highly stable operation over a wide range of supply voltage and torque supply voltage, VCC = 3.5V ~ 14.4V * Reverse voltage protection circuit is built-in 0.50.2 1.778 3.5max. 15.0min. *Stable 11.5max. 0.50.1 1.44 1.76 4-Lead SIP Package (SSIP004-P-0000) s Pin Descriptions Pin No. 1 2 3 4 VCC Control Pin GND Motor Pin Pin Name s Block Diagram 2 VREF VCC 1 COM 40 4 3 GND AN6651 s Absolute Maximum Ratings (Ta= 25C) Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature 1 ICs for Motor Symbol VCC ICC *2 PD *1 Topr Tstg Rating 14.4 2000 1300 -20 ~ + 75 - 40 ~ +150 Unit V mA mW C C * Ta = 25C, With a 10 x 10mm bakelite printed circuit board (35m Cu leaf) *2 t 5s s Electrical Characteristics (Ta = 25C) Parameter Reference Voltage Bias Current Current Proportional Constant Saturation Voltage Voltage Characteristics (1) Voltage Characteristics (2) Current Characteristics (1) Current Characteristics (2) Temperature Characteristics (1) Temperature Characteristics (2) Symbol VREF IBias K Vsat VREF /VCC VREF K /VCC K VREF /I4 VREF K /I4 K VREF /Ta VREF K /Ta K VCC = 6V VCC = 6V, DI4 = 40mA VCC = 4.2V, Ra = 5.0 VCC = 3.5V ~ 14V , Ra = 1k VCC = 3.5V ~ 14V , DI4 = 40mA I4 = 50mA ~ 200mA I4 = 50mA ~ 200mA Ta = -20C ~ 75C, VCC = 6V , Ra = 1k Ta = -20C ~ 75C, DI4 = 40mA 35 Condition VCC = 6V, Ra = 1k min. 0.85 typ. 1.0 0.8 40 1.15 - 0.1 0.2 - 0.02 - 0.01 0.01 0.01 max. 1.15 1.8 45 2 V %/V %/V %/mA %/mA %/C %/C Unit V mA s Characteristics Curve PD - Ta 1.6 1.4 Power Dissipatior PD (W) 1.2 1.0 0.8 0.6 0.4 0.2 0 -20 0 (2) (1) With a 10 x 10mm bakelite printed circuit board (35m Cu leaf) (2) Without heat sink (1) s Application Circuit VCC 22H RT 180 Micro Motor M Ea Ra RS 2 10F 1 AN6651 3 4 Motor Constants 20 40 60 80 100 120 140 160 180 Ambient Temperature Ta (C) Ka : Electromotive force constant = 1.1mV/rpm Ra : Internal resistor = 5 KT : Torque constant = 100g * cm/A |
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