an6657s Panasonic Corporation of North America, an6657s Datasheet
an6657s
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an6657s Summary of contents
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... ICs for Motor AN6657, AN6657S Micromotor Forward/ Reverse Electronic Governors Overview The AN6657 and the AN6657S are the electronic gov- ernors capable of controlling the forward/reverse speed, fast forward, rewind, and start/stop of the micromotors used for the radio/cassette tape recorders, automatic an- swering telephone sets, and so on ...
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... AN6657, AN6657S Absolute Maximum Ratings (Ta= 25˚C) Parameter Supply Voltage Supply Current Output Current AN6657 Power Dissipation AN6657S Operating Ambient Temperature AN6657 Storage Temperature AN6657S Recommended Operating Range (Ta = 25˚C) Parameter Operating Supply Voltage Range Electrical Characteristics (Ta = 25˚C) Parameter Symbol ...
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... Connect to the pin o. To the pin 9. 12 GND pin GND 13 No connection NC Start/stop control pin 14 Start/Stop 15 Forward/reverse control pin Forward/Reverse Constant speed/FF control 16 Constant Speed/FF pin AN6657, AN6657S I/O Voltage Equivalent Circuit – 1. – 1. ...
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... AN6657, AN6657S Supplementary Explanation • Principle of Functioning The AN6657 and the AN6657S are the electronic governors which control the motor speed constantly by making use of the fact that the counter electromotive force generated in the motor winding is proportional to the motor speed when the DC motor rotates. They have two motor drive systems which correspond to the forward and reverse rotations, respectively ...
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... Ia (load torque T). This is also true for the expression (5). • Switching the Various Modes The AN6657 and the AN6657S have five motor drive modes as shown in Table 1. Those modes can be selected depending on the voltage H (3V to 6V) and voltage L (0V to 0.7V) signals applied to the input pins14, 15 and 16. ...
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... AN6657, AN6657S All Temperatures T (Torque) M Fig Temperature Characteristics = Ra Tempera- 1 ture Characteristics • Temperature Compensation of Motor Speed For the normally used motor with core, the temperature compensation of the motor speed can be done by using 3,900 r.p.m/˚C metal coated or coiled resistor as the torque control ...