■ 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.

■ Features

• Wide operating supply voltage range ; VCC =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

■ Applications

• Speed control of the micromotors for the radio cassettes

• Speed control of the micromotors for the microcassettes of the automatic answering telephone sets

• Control of the tape loading motors for the DATs, etc.