M54641L

M54641L MITSUBISHI | Alldatasheet

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Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION M 54641L/FP MITSUBISHI <CONTROL / DRIVER IC> DES CRIPT IO N The M54641 is a semiconductor integrated circuit that is capable of directly driving a smallsize bi-directional motor rotating in both forward and reverse directions. FEAT URES l Wide range of operating voltage (VCC = 4 – 10V,VCC ’(max)= 20V) l Low output saturation voltage in stationary motor circuit (large voltage across motors) l Built-in clamp diode l Provided with output voltage control pin (VZ) l Built-in thermal shutdown circuit (Tj(shut) = 120˚C standard) APP LICAT IO N Sound equipment such as tape deck and radio cassette, and VTR FUNCT IO N The M54641 is an IC for driving a smallsize bi-directional motor that rotates in both forward and reverse directions. Giving signal to inputs IN1 and IN 2 outputs the signal of the same phase to output pins O1 and O2. That is, giving high-level signal to input IN 1 and low-level signal to input IN2 sets output O 1 to high-level and output O 2 to low-level. Connection of a motor between output pins O1 and O 2 uses O1 as an output current source and O 2 as an output current sink to rotate the motor. In addition, giving the reverse signal to inputs IN1 and IN 2 sets O1 and O2 to low-level and high- level, respectively, resulting in rotating the motor reversely. However, when both IN1 and IN2 are set to “H”, both O 1 and O2 are set to low-level, resulting in sudden stop of motor rotation. (Brake mode) If the Zener diode of certain voltage, for example, is added to the VZ pin, the output “H” voltage does not rise over the Zener voltage and the motor rotates at constant speed. If the VZ pin is connected to the output power supply VCC’ pin, the rotating speed of the motor can be varied by varying the VCC’ voltage. The motor rush current and the current with the motor put in stationary status are as follows: Iop(max) = 800mA and IO(max) = 150mA. PIN C O N FIG URAT IO N (TO P VIEW ) Outline 8P5 Output voltage control Power supply Output 2 Input 2 Output power supply Input 1 Output 1 Input Output RemarksIN1 No operation of IC Reverse rotation Brake LO G IC TRUT H TABL E VZ VCC O 2 IN2 VCC ’ IN1 O 1 GND Outline 10P2-C VZ IN2 VCC ’ O 1 NC Output voltage control Input 2 Output power supply Output 1 GND IN1 VCC O 2 NC Input 1 Output 2 Power supply NC: noconnection L H L H IN2 L L H H O 1 “OFF” state H L L O 2 L H L B LOC K D IAGR A M Power supply VCC Output power supply VCC ’ Constant voltage source Output voltage controlVZ Output 2O 2 Output 1O 1 Input circuit Input circuit Control circuit Output circuit Output circuit Input 1IN1 Input 2IN2 GND M54641L M54641FP Forward rotationex “OFF” state

Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION M 54641L/FP MITSUBISHI <CONTROL / DRIVER IC> V mA V V REC O M M ENDE D O PERAT IN G C O NDITIO N (Ta = 25˚C, unless otherwise noted) Limits Min. Typ. Max.Symbol Conditions UnitParameter VCC Supply voltage Outputcurrent ±100 0.6 IO VIH VIL “H” input voltage “L” input voltage tS Motor braking interval TS Operation temperature of thermal protection circuit (junction temperature) VCC ms ABS O LUT E M AXIM UM RAT ING S (Ta=25˚C, unless otherwise noted) VCC ’ Output GND VZOutput circuitInput circuit1 2 GND VCC 15k1k INInput IN PUT /O U TPUT CIRC UIT -0.5 – +12 -0.5 – +20 -0.5 – VCC’+2.5 ±150 mW mA 570 100 VCC VCC ’ VI VO IO(max) IO Pd Topr Tstg Supply voltage Output Supply voltage Input voltage Output voltage Allowable motor rush current Continuous output current Power dissipation Operating temperature Storage temperature tOP =10ms: cycle time 0.2HZ or less Ta = 60˚C(M54641L) 0 – VCC ±800 -10 – 60 -55 – 125 V V V V mA Symbol Ratings UnitParameter Conditions Tj Junction temperature VI<VCC 3.0 100 100 120 Though the IC is equipped with a thermal shutdown circuit for prevention against thermal breaking, the threshold temperature is set to 100°C min. Set the driving current in such a way that this thermal shutdown circuit cannot operate during normal operation.

Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION M 54641L/FP MITSUBISHI <CONTROL / DRIVER IC> Limits Min. Typ. Max. Symbol Test conditions UnitParameter I O(leak) V OH V OL V O1-O2 I I I CC “H” output saturation voltage EL ECT R ICAL CHARACT ERISTICS a =25˚C, V CC = 5V, unless otherwise noted) “L” output saturation voltage Output leak current Voltage between outputs (1) and (2) (Voltage across Motor) Input voltage Supply current V CC ’= 20V V Z : Open V CC ’= 12V V Z : Open V CC ’= 12V V Z : Open V CC ’= 12V V Z = 7V V CC ’= 12V V CC = 10V V CC ’= 12V V I = 3V V I = 5V Output OPEN V O = 20V V O = 0V I OH = -50mA I OH = -100mA I OH = 50mA I OH = 100mA I O = ±100mA Output open In “OFF” state Forwardrotation or reverse rotation Braking -100 0.3 0.4 7.7 180 380 3.0 8.0 12.0 10.5 10.4 0.1 0.2 7.0 100 240 1.2 4.5 7.5 10.2 10.0 6.3 m A V V V m A mA TYPICAL CHARACT ERISTICS Condition

• With basic installation (epoxy board of 5cm x 5cm x 0.8mmt with copper foil on a single side)
• t : Power apply time Thermal Derating (M54641L) (Absolute Maximum Rating) 25 50 60 75 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Power Dissipation P d(max) (W) Ambient Temperature T a (˚C) t = 20 sec t = t = 10sec Thermal Derating (M54641FP) (Absolute Maximum Rating) 25 50 60 75 100 0.2 0.4 0.6 0.8 Power Dissipation P d(max) (W) Ambient Temperature T a (˚C) “H” Output Saturation Characteristics T a = 25˚C V CC ’= 12V V Z = Open “H” Output Current I OH (mA) “H” Output Voltage V CC’ OH (V) -50 -100 -150 -200 “L” Output Saturation Characteristics T a = 25˚C V CC ’= 12V V Z = Open “L” Output Current I OL (mA) “L” Output Voltage V OL (V) 100 150 200 100

Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION M 54641L/FP MITSUBISHI <CONTROL / DRIVER IC> CAUT IO NS Since the thermal protection function of this IC may not work in abnormal status (oscillation, low supply voltage, output short- circuit, 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. 10 m 8 765 43 21 M V B 10 – 100 m F IN IN APP LICAT IO N EXA M PLE M V B IN IN 10 – 100 m F M5 4641L M5 4641FP