AN6657

ICs for Motor AN6657, AN6657S Micromotor Forward/ Reverse Electronic Governors s Overview The AN6657 and the AN6657S are the electronic governors capable of controlling the forward/reverse speed, fast forward, rewind, and start/stop of the micromotors used for the radio/cassette tape recorders, automatic answering telephone sets, and so on. AN6657 Unit : mm 1 2 21.7±0.3 3 4 5 6 7 8 6.3±0.25 16 15 14 13 12 10 9 s Features Wide operating supply voltage range ; V CC =4.5V to 14V Stable reference voltage (1.3V) and easy speed control Large starting torque and maximum control torque Good secular drift because of external power transistor Provided with the motor stop function ; ICC =20µA or less at stop time Capable of controlling forward/reverse rotation, fast forward/constant speed, and start/stop via 3 input pins 0.51min. 3.8±0.25 (3.45) 0.3 – + 0.1 5 0.0 3 ~ 15˚ 7.62±0.25 16-Lead DIP Package (DIP016-P-0300E) s Applications Speed control of the micromotors for the radio cas- AN6657S Unit : mm 0.4±0.25 settes Speed control of the micromotors for the microcassettes of the automatic answering telephone sets Control of the tape loading motors for the DATs, etc. 0.4 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1.5±0.2 10.1±0.3 0.65 0.1±0.1 1.27 0.3 4.2±0.3 6.5±0.3 s Block Diagrom GND 16 15 Drive Mode Swiching Logic 14 13 12 11 VCC 10 9 16-Lead SOP Package (SOP016-P-0300) Ref.Voltage 1kΩ 10kΩ Amp. For./Rev. Drive Circuit 1 2 3 4 5 6 7 8...