M54649L Datasheet PDF

MITSUBISHI M54649L DUAL Bi-DIRECTIONAL MOTOR DRIVER DESCRIPTION The M54649L is a semiconductor i...

MITSUBISHI M54649L DUAL Bi-DIRECTIONAL MOTOR DRIVER DESCRIPTION The M54649L is a semiconductor integrated circuit that is capable of directly driving two smallsize bi-directional motors rotating in both forward and reverse directions. PIN CONFIGURATION (TOP VIEW) GND Output 2 Output 3 Input 1 Input 2 Input 3 Power supply 1 Input for output control Power supply 2 for output Output 1 O2 O3 IN1 IN2 IN3 VCC1 VR VCC2 O1 1 2 3 4 FEATURES q Capable of driving two motors in both forward and reverse directions q Equipped with “H” output voltage control pin q Built-in thermal protection circuit q Large output current drive (IO(max) = 1.6A) q Wide range of operating supply voltage (VCC = 4 – 18V) q Capable of directly driving with CMOS IC output M54649L 5 6 7 8 9 10 APPLICATION Sound equipment such as tape deck and radio cassette, VTR, and other general consumer appliances FUNCTION The M54649L consists of input circuit, control circuit, constant current circuit and output circuit. Two motors are connected to the IC; both of them are connected to output pin O1, and one is connected to output O2, and the other is connected to output O3. The motors are controlled by three input levels of input pins IN1 to IN3. As shown in the logic truth table, the control statuses of ‘forward rotation’, ‘reverse rotation’, ‘brake’ and ‘OFF’ are selectable. The input circuit provides hysteresis functions that prevent malfunction due to rounding at rising edge and falling edge ...