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MITSUBISHI
M54543AFP
Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
DESCRIPTION
The M54543AFP is a semiconductor integrated circuit that is capable of directly driving a smallsize bi-directional motor rotating in both forward and reverse directions.
PIN CONFIGURATION (TOP VIEW)
FEATURES
qWide range of operating voltage (VCC=4 - 15V) qPossible direct driving with TTL, PMOS and CMOS IC outputs qSmall outline (10-pin SOP) qLow output saturation voltage (large voltage across motors) qBuilt-in clamp diode qLarge output current drive (IO(max) = 700mA) qProvided with brake function qBuilt-in thermal shutdown protection circuit
Output 2 Input 1
O2 IN1 GND
1
Output 10 VCC'1 power supply 1 9 8 7 6 VCC1 NC VCC2 Power supply 2 Power supply 1
M54543AFP
2 3 4 5
Input 2 Output 1
IN2 O1
VCC'2 Output power supply 2
Outline 10P2-C NC : no connection
APPLICATION
Sound equipment such as tape deck and radio cassette, VTR, and other general consumer appliances
BLOCK DIAGRAM
Power supply 1 VCC1 Output power supply 1 Output 2 Output 1 VCC'1 O2 O1 Output power supply 2 VCC'2 Power supply 2 VCC2
Thermal protection circuit
Input control circuit
IN1 Input 1
GND
IN2 Input 2
MITSUBISHI
M54543AFP
Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
FUNCTION
The M54543AFP is an IC for driving a smallsize bi-directional motor that rotates in both forward and reverse directions. When both inputs 1 and 2 are set to low-level, outputs 1 and 2 are set to "OFF". When input 1 is set to high-level and input 2 is set to lowlevel, output 1 is set to high-level and output 2 is set to low-level (forward rotation status). When input 1 is set to low-level and input 2 is set to high-level, output 1 is set to low-level and output 2 is set to high-level (reverse rotation). When both inputs 1 and 2 are set to high-level, both outputs 1 and 2 are set to low-level (brake status). The power supply (VCC) to the control circuit and the power supply (VCC') for output are independently provided. The rotating speed of the motor can be therefore changed by using VCC and VCC' as
different power supplies and by making VCC or VCC' variable. In addition, built-in thermal protection circuit protects the IC from thermal destruction in case of abnormal condition such as motor blocking.
LOGIC TRUTH TABLE
Input IN1 L H L H IN2 L L H H Output Remarks O1 O2 "OFF" state "OFF" state No operation of IC ex Forward rotation H L ex Reverse rotation L H Brake L L
ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted)
Symbol VCC(1) VCC'(1) VI VO IO(max) IO(1) Pd Topr Tstg Parameter Supply voltage (1) Output supply voltage (1) Input voltage Output voltage Allowable motor rush current Continuous output current(1) Power dissipation Operating temperature Storage temperature Conditions Ratings -0.5 - +16 -0.5 - +16 0 - VCC -0.5 - VCC+2.5 700 150 200 -10 - 75 -55 - 75 Unit V V V V mA mA mW C C
tCC=10ms : cycle time 0.2Hz or less Ta=75C
RECOMMENDED OPERATING CONDITION (Ta=25C, unless otherwise noted)
Symbol VCC IO VIH VIL tB t j (shut) Parameter Supply voltage Continuous output current "H" input voltage "L" input voltage Motor braking interval Thermal shutdown However, indicates the junction temperature only in the case of temperature VCC7V. Min. 4 2 0 10 Limits Typ. 12 5 100 150 Max. 15 100 VCC 0.4 Unit V mA V V ms C
ELECTRICAL CHARACTERISTICS (Ta=25C, unless otherwise noted)
Symbol IO(leak) Parameter Output leak current "H" output saturation voltage "L" output saturation voltage Voltage between outputs (1) and (2)
(Voltage across motors)
Test conditions VCC=VCC'=16V VI1=VI2=0V VCC=VCC'=12V VI1=0V, VI2=2V or VI1=2V, VI2=0V VCC=VCC'=12V VI1=2V, VI2=0V or VI1=0V, VI2=2V VCC=VCC'=12V, VI1=2V, VI2=0V or VI1=0V, VI2=2V IO=100mA, VO1-VO2=VOH1-VOL2 VCC=VCC'=12V, VI=2V VCC=VCC'=12V Output open VI1=2V, VI2=0V VI1=0V, VI2=2V VI1=2V, VI2=2V VI1=0V, VI2=0V VO=16V VO=0V IOH=-50mA IOH=-100mA IOL=50mA IOL=100mA
Min.
Limits Typ.
Max. 100
Unit A V
11.0 10.9
11.25 11.20 0.05 0.1 0.2 V 0.4 V 120 20 4 A
VOH
VOL
VO1-O2 II
9.6 50
Input current
ICC
Supply current
mA
MITSUBISHI
M54543AFP
Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
TYPICAL CHARACTERISTICS
Thermal Derating (Absolute Maximum Rating)
0.8 0.7 Allowable Package Power Dissipation Pd(max) (W) 0.6 0.5 0.4 0.3 0.2 0.1 0 0 25 50 75 100 M54543AFP
Ambient Temperature Ta (C)
"H" Output Saturation Characteristics
-200 200
"L" Output Saturation Characteristics
"H" Output Current IOH (mA)
Ta=-20C
"L" Output Current IOL (mA)
Ta=75C Ta=25C Ta=-20C 100
Ta=25C -100 Ta=75C
VCC=VCC'=12V
VCC=VCC'=12V 0 0 0.2 0.4 0.6 0.8 1.0 "H" Output Voltage VCC'- VOH (V) 0 0 0.2 "L" Output Voltage VOL (V) 0.4
MITSUBISHI
M54543AFP
Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
CAUTIONS
Since the thermal protection function of this IC may not work in abnormal status (oscillation, low supply voltage, output shortcircuit, etc.), check the operation in the IC installation status when using this function. When the motor back electromotive force is large with the brakes applied, for example, malfunction may occur in internal parasitic Di. If flyback current of 1A or more flows, add Schottky Di to the portion between the output and the GND. When the IC is used at a high speed for PWM, etc., note that switching of output results in delay of approx.10s.
APPLICATION EXAMPLES
1) When VCC and VCC' are used as the same power supply
R2=3 VCC
R1= 2
10
9
8
7
6
10 - 100F
M54543AFP
1 Input 1
2
3
4
5 Input 2
M
2) When VCC is used as a fixed power supply and VCC' is used as a variable power supply
VCC 2 C 10 10 - 100F 9 8 7 6 C 1 - 10F
M54543AFP
1 Input 1
2
3
4
5 Input 2
M
3) When VCC is used as a variable power supply and VCC' is used as a fixed power supply
C 1 - 10F 10 9 8 7 6
2 VCC' C 10 - 100F
M54543AFP
1 Input 1
2
3
4
5 Input 2
M

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