M54543L: An electronic component of Commercial-use Equipment

The component M54543L is a common electronic component which is usually used in the commercial-use equipment, audio such as tape recorder or radio, cassette recorder and VCR as well.

The M54543L is an IC for driving a small size bi-directional motor for forward/reverse rotation. When both of inputs 1 and 2 are "L", outputs 1 and 2 are "OFF". When input 1 is "H" and input 2 is "L", output 1 is "H" and output 2 is "L" (forward rotation). When input 1

is "L" and input 2 is "H", output 1 is "L" and output 2 is "H" (reverse rotation). When both of inputs 1 and 2 are "H", both of outputs 1 and 2 are "L" (braking).

The IC is provided with a control circuit power supply (V_cc) and an output power supply (V_cc') independently. The motor rotation speed can be changed by operating Vcc and V_cc' from a separate supply and varying the voltage of V_cc or V_cc'.

FEATURES

1.    Wide operating voltage range (Vcc = 4V to 16V)

2.    Direct drive capability by TTL, PMOS and CMOS IC outputs

3.    Low output saturation voltage (large voltage across motor)

4.    Built-in clamp diode

5.    Large output current drive (Io (max) = ±1.2A) 

6.   With brake function