MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M54543AL is a semiconductor IC capable of directly driving a smallsize bi-directional motor for forward/reverse rotation. FEATURES POWER SUPPLY 1 Wide operating voltage range (Vcc = 4V to 16V) Direct drive capability by TTL, PMOS and CMOS IC outputs Low output saturation voltage (large voltage across motor) Built-in clamp diode Large output current drive (Io (max) = ±1.5A) With brake function Built-in thermal shut-down protector circuit VCC1 1 DRIVER POWER SUPPLY 1 VCC' 1 2 OUTPUT 2 O2 3 INPUT 1 IN1 4 GND 5 INPUT 2 IN2 6 OUTPUT 1 O1 7 DRIVER POWER SUPPLY 2 VCC' 2 8 POWER SUPPLY 2 9 APPLICATION Commercial-use equipment, audio such as tape recorder or radio cassette recorder, and VCR. VCC2 FUNCTIONAL DESCRIPTION The M54543AL is an IC for driving a smallsize 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 (Vcc) and an output power supply (Vcc') independently. The motor rotation speed can be changed by operating Vcc and Vcc' from a separate supply and varying the voltage of Vcc or Vcc'. The IC is also provided with a built-in thermal protector circuit to protect it from thermal destruction in case of abnormal condition such as motor blocking. Outline 9P9 LOGIC TRUTH TABLE INPUT OUTPUT NOTE IN1 IN2 O1 O2 L L "OFF" state "OFF" state H L H L ex.Forward L H L H ex.Reverse H H L L Braking Open BLOCK DIAGRAM POWER SUPPLY 1 VCC1 DRIVER POWER SUPPLY 1 VCC' 1 OUTPUT 2 O2 OUTPUT 1 O1 DRIVER POWER SUPPLY 2 VCC' 2 POWER SUPPLY 2 VCC2 1 2 3 7 8 9 THERMAL SHUT DOWN CONTROL CIRCUIT 4 5 6 IN1 INPUT 1 GND IN2 INPUT 2 MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted) Symbol Parameter VCC (1) Supply voltage (1) VCC (2) VCC' Supply voltage (2) Driver supply voltage VI Input voltage VO Output voltage IO (max) Peak output current IO (1) Continuous output current (1) IO (2) Pd Continuous output current (2) Power dissipation Conditions 2 With an external heat sink (3000mm ×1.5mm) Ratings Unit -0.5 to +16 V -0.5 to +20 -0.5 to +16 V V 0 to VCC V -0.5 to VCC'+2.5 V ±1.5 A ±330 mA ±600 1.15 mA W top=10ms : Repetitive cycle 0.2Hz max 2 With an external heat sink (3000mm ×1.5mm) Ta=75°C Topr Operating temperature -10 to +75 °C Tstg Storage temperature -55 to +125 °C RECOMMENDED OPERATING CONDITIONS (Ta=25°C, unless otherwise noted) Symbol Parameter VCC Supply voltage IO Continuous output current VIH "H" Input voltage VIL "L" Input voltage tB Motor braking interval Tj (shut) Thermal shutdown temperature Limits Test conditions Min. 4 Typ. 12 Max. 15 Unit V ±300 mA 2 VCC V 0 0.4 10 VCC≥7V V 100 ms 150 °C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise noted) Symbol IO (leak) VOH (1) VOH (2) VOL (1) Parameter Output leak current "H" Output saturation voltage (1) "H" Output saturation voltage (2) "L" Output saturation voltage (1) Limits Test conditions Min. Typ. Max. VCC=VCC'=20V VO=20V 100 VI1=VI2=0V VO=0V -100 VCC=VCC'=12V VCC=VCC'=12V VCC=VCC'=12V VI1=2V IOH (1)=-200mA 10.8 11.2 VI2=0V IOH (1)=-500mA 10.7 11.1 VI1=0V IOH (2)=-200mA 10.8 11.2 VI2=2V IOH (2)=-500mA 10.7 11.1 VI1=0V IOL (1)=200mA VI2=2V VI1=VI2=2V VI1=2V IOL (1)=500mA IOL (2)=200mA Unit µA V V 0.2 0.5 0.95 1.35 0.95 1.35 0.2 0.5 0.95 1.35 0.95 1.35 V V VOL (2) "L" Output saturation voltage (2) VCC=VCC'=12V IIH (1) "H" Input current (1) VCC=VCC'=12V, VI1=2V, VI2=0V 50 120 µA IIH (2) "H" Input current (2) VCC=VCC'=12V, VI1=0V, VI2=2V 50 120 µA VI2=0V VI1=VI2=2V IOL (2)=500mA VI1=2V, VI2=0V ICC Supply current 20 VCC=VCC' =16V VI1=0V, VI2=2V Output open VI1=VI2=2V 20 VI1=VI2=0V 4 mA MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) 8 2 25cm ×1.5mm (t) ALUMINUM HEAT SINK 6 4 FREE AIR 2 0 0 25 50 75 100 AMBIENT TEMPERATURE Ta (°C) "H" OUTPUT SATURATION "L" OUTPUT SATURATION -600 600 VCC=VCC'=12V VCC=VCC'=12V -500 500 Ta=75°C -400 400 Ta=25°C -300 300 Ta=-20°C -200 200 -100 0 Ta=75°C Ta=25°C Ta=-20°C 100 0 0.2 0.4 0.6 0.8 1.0 "H" OUTPUT VOLTAGE VCC'-VOH (V) 0 0 0.2 0.4 0.6 0.8 "L" OUTPUT VOLTAGE VOL (V) 1.0 MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION PRECAUTIONS FOR APPLICATION (1) If the motor resistance is high (small output current: several tens of mA at a light load) and Vcc is greater than Vcc' in application examples 2) and 3), current may counter-flow from the Vcc pin to the Vcc' pin. The motor can work at a light load even when the Vcc' pin is opened. For light-load applications, use the M54544AL. The thermal protection of the IC may not work depending on an abnormal condition (such as oscillation, low supply voltage or output short). When using the function, check its operation in the actual using state. If the motor has a large counter electromotive force at a braking time, etc., the internal parasitic Di may malfunction. If fly-back current of 1A or more flows, put a shottkey Di between the output and the GND. Remember that the IC has an about 10µs delay in output switching for high-speed applications such as PWM. (2) As far as motor control and driver IC's are concerned, some possibilities are considered for these IC's to cause such unexpected cases as fire or smoke if they are used beyond its ratings in datasheet or used, even transiently, under the overload conditions. So your action will be highly appreciated to fully look into the rating limits and the using conditions before you use these IC's. And if these IC's are to be used under the conditions out of our specifications, please never fail to give us a contact as to under what conditions they are used. APPLICATION EXAMPLES 1) Motor speed control by VCC and VCC' R2=3Ω VB R1=2Ω C 10 to 100µF M INPUT 1 INPUT 2 9 8 7 6 5 4 3 2 1 M54543AL 2) Motor speed control by the VCC' VCC 2Ω C 10 to 100µF C 1 to 10µF M INPUT 1 INPUT 2 9 8 7 6 5 4 3 2 1 M54543AL 3) Motor speed control by the VCC 1 to 10µF 2Ω C VCC' C 10 to 100µF M INPUT 1 INPUT 2 9 8 7 6 5 4 M54543AL 3 2 1