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| MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION DESCRIPTION The M54543AL is a semiconductor IC capable of directly driving a smallsize bi-directional motor for forward/reverse rotation. PIN CONFIGURATION (TOP VIEW) FEATURES 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 POWER SUPPLY 1 VCC1 1 2 3 4 5 6 7 8 9 DRIVER POWER SUPPLY 1 VCC' 1 OUTPUT 2 INPUT 1 O2 IN1 GND INPUT 2 OUTPUT 1 IN2 O1 APPLICATION Commercial-use equipment, audio such as tape recorder or radio cassette recorder, and VCR. DRIVER POWER SUPPLY 2 VCC' 2 POWER SUPPLY 2 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 IN1 L H L H IN2 L L H H OUTPUT O1 "OFF" state O2 "OFF" state NOTE Open ex.Forward ex.Reverse Braking H L L L H L BLOCK DIAGRAM POWER SUPPLY 1 VCC1 1 DRIVER POWER SUPPLY 1 VCC' 1 2 OUTPUT 2 O2 3 OUTPUT 1 O1 7 DRIVER POWER SUPPLY 2 VCC' 2 8 POWER SUPPLY 2 VCC2 9 THERMAL SHUT DOWN CONTROL CIRCUIT 4 IN1 INPUT 1 5 GND 6 IN2 INPUT 2 MITSUBISHI ICs (AV COMMON) M54543AL Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted) Symbol VCC (1) VCC (2) VCC' VI VO IO (max) IO (1) IO (2) Pd Topr Tstg Parameter Supply voltage (1) Supply voltage (2) Driver supply voltage Input voltage Output voltage Peak output current Continuous output current (1) Continuous output current (2) Power dissipation Operating temperature Storage temperature With an external heat sink (3000mm x1.5mm) Ta=75C 2 Conditions With an external heat sink (3000mm x1.5mm) 2 Ratings -0.5 to +16 -0.5 to +20 -0.5 to +16 0 to VCC -0.5 to VCC'+2.5 Unit V V V V V A mA mA W C C top=10ms : Repetitive cycle 0.2Hz max 1.5 330 600 1.15 -10 to +75 -55 to +125 RECOMMENDED OPERATING CONDITIONS (Ta=25C, unless otherwise noted) Symbol VCC IO VIH VIL tB Tj (shut) Supply voltage Continuous output current "H" Input voltage "L" Input voltage Motor braking interval Thermal shutdown temperature VCC7V 2 0 10 100 150 Parameter Test conditions Limits Min. 4 Typ. 12 Max. 15 300 VCC 0.4 Unit V mA V V ms C ELECTRICAL CHARACTERISTICS (Ta=25C, unless otherwise noted) Symbol IO (leak) VOH (1) VOH (2) Parameter Output leak current "H" Output saturation voltage (1) "H" Output saturation voltage (2) VCC=VCC'=20V VI1=VI2=0V VCC=VCC'=12V Test conditions VO=20V VO=0V VI1=2V VI2=0V VI1=0V VI2=2V VI1=0V VI2=2V VI1=VI2=2V VI1=2V IOH (1)=-200mA IOH (1)=-500mA IOH (2)=-200mA IOH (2)=-500mA Limits Min. Typ. Max. 100 -100 10.8 10.7 10.8 10.7 11.2 11.1 11.2 11.1 0.2 0.95 0.95 0.2 0.95 0.95 50 50 0.5 1.35 1.35 0.5 1.35 1.35 120 120 20 20 4 Unit A V V VCC=VCC'=12V IOL (1)=200mA IOL (1)=500mA IOL (2)=200mA IOL (2)=500mA VOL (1) "L" Output saturation voltage (1) VCC=VCC'=12V V VOL (2) IIH (1) IIH (2) "L" Output saturation voltage (2) "H" Input current (1) "H" Input current (2) VCC=VCC'=12V VI2=0V VI1=VI2=2V V A A VCC=VCC'=12V, VI1=2V, VI2=0V VCC=VCC'=12V, VI1=0V, VI2=2V VI1=2V, VI2=0V VCC=VCC' =16V Output open VI1=0V, VI2=2V VI1=VI2=2V VI1=VI2=0V ICC Supply current 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 25cm x1.5mm (t) ALUMINUM HEAT SINK 2 6 4 FREE AIR 2 0 0 25 50 75 100 AMBIENT TEMPERATURE Ta (C) "H" OUTPUT SATURATION -600 VCC=VCC'=12V -500 Ta=75C -400 -300 -200 -100 0 Ta=25C Ta=-20C 400 300 200 100 0 500 600 "L" OUTPUT SATURATION VCC=VCC'=12V Ta=75C Ta=25C Ta=-20C 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0 "H" OUTPUT VOLTAGE VCC'-VOH (V) "L" OUTPUT VOLTAGE VOL (V) 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 10s 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=3 VB R1=2 C 10 to 100F INPUT 2 9 8 7 6 5 4 3 2 1 M INPUT 1 M54543AL 2) Motor speed control by the VCC' VCC 2 C 10 to 100F C 1 to 10F INPUT 2 M INPUT 1 9 8 7 6 5 4 3 2 1 M54543AL 3) Motor speed control by the VCC 1 to 10F 2 VCC' C 10 to 100F INPUT 2 9 8 7 6 5 4 3 2 1 C M INPUT 1 M54543AL |
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