M54685L

M54685L MITSUBISHI | Alldatasheet

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Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR M 54685L MITSUBISHI <CONTROL / DRIVER IC> PIN C O N FIG URAT IO N (TO P VIEW )DES CRIPT IO N The M54685L 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 = 4.5 – 14V) l Possible direct driving with TTL, PMOS and CMOS outputs l Small outline (10-pin SIP) l Built-in clamp diode l Low output saturation voltage (large voltage across motors) l Large output current drive (IO (max)= 500mA) l Provided with brake functions l Built-in thermal shutdown protection circuit APP LICAT IO N Micro-cassette for phone-answering machine, tape deck, radio cassette, and other sound equipment, and VTR and general consumption appliances FUNCT IO N The M54685L is an IC that can control the forward rotation, reverse rotation and speed of small DC brush motor. For the basic operation of this IC, output modes are selected, as shown in the logic truth table at right, by applying appropriate TTL- level input to R, L and STB inputs. The PLAY mode is a mode where speed is controllable and is used to control the speed of motor by using two resistances, R T and RS, as shown in the application example. R T and RS are generally given by the following formulae: R T = K•R a (K: current proportional constant, R a: Motor armature resistance) R S = Ka•N/IB (N: rotating speed, Ka: Motor generation constant, IB: PSC bias current) FSC and RSC are pins to connect resistance that restricts the rotating speed in FF and PLAY. B LOC K D IAGR A M LO G IC TRUT H TABL E LL H L H H H L H H H H L R L STB Mode High speed forward rotation (FF) GOVERNOR forward rotation (PLAY) High speed reverse rotation (REW) Brake Standby O 1 Power supply 352987 O 2VCC PSC Output 2 Output 1 R input L input Standby input FF speed control REW speed control RSCGNDFSCSTBLR 4 1610 Governor circuit Control circuit (Thermal protection circuit) Outline 10P5 Output 1 FF speed control REW speed control Output 2 Speed control R input L input Standby input Power supply O 1 FSC PSC R L STB VCC RSC O 2 GND M54685L

Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR M 54685L MITSUBISHI <CONTROL / DRIVER IC> O V mA V PIN FUNCT IO N N AM E Pin No. ABS O LUT E M AXIM UM RAT ING S (Ta = 25˚C, unless otherwise noted) Ratings Symbol Conditions Unit V CC Supply voltage Output voltage I O V O Allowable motor rush current Continuous outputcurrent P d Power dissipation Operating temperature T stg Storage temperature t ON 5sec, duty of 10% or less W Pin name Name FSC RSC GND O PSC R L STB V CC Output pin for motor driving Fast forward rotating speed adjustment pin Fast reverse rotating speed adjustment pin Output pin for motor driving Ground Governor forward rotation speed control pin Output mode selection input pin Output mode selection input pin Standby input pin (power save function) Power supply Parameter V mA V I I Op T opr Input voltage However, P d must not exceed the maximum rating T a = 50˚C, when mounted in glass epoxy board -0.5 – 16 -0.5 – V CC -0.5 – V CC +2.5 ±500 (Note 1) ±200 1.2 -20 – 75 -40 – 125 ˚C Note 1: When mode is switched to FF or REW mode, up to 1.0A is allowed as sink current (I OL ) with t ON 100ms. REC O M M ENDE D O PERAT IN G C O NDITIO N (Ta = 25˚C, unless otherwise noted) Symbol Limits “H” input voltageV IH “L” input voltage Parameter V CC V IL Supply voltage Unit MaxTyp Min V V V V CC 0.4 6.0 4.5 2.0

Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR M 54685L MITSUBISHI <CONTROL / DRIVER IC> EL ECT R ICAL CHARACT ERISTICS (Ta = 25˚C, Vcc = 6V, unless otherwise noted) V CC = 4.5 – 14V Current proportional constant Voltage characteristic (1) mA m A V Limits Min. Typ. Max. Symbol Test conditions UnitParameter I IH “H” input current 0.1 “L” input current V CC -0.7 %/V I IL V OH “H” output voltage “L” output voltage Reference voltage I = 40mA Bias current K V IH = 5V V CC -1.1 0.1 0.85 0.22 V CC -0.9 V CC -0.9 0.2 1.2 1.00 1.3 0.4 V CC -0.7 0.4 1.15 %/V Voltage characteristic (2) Current characteristic (1) Current characteristic (2) Temperature characteristic (1) Temperature characteristic (2) Standby supply current Supply current V OL V ref I CC (S) I CC I B V ref V ref V CC K K V CC V ref V ref I K K I V ref V ref T a K K T a V IL = 0V FF, REW mode I O = -150mA PLAY mode I O = -150mA FF, REW mode I O =150mA PLAY mode R a = 5 V CC = 4.5 – 14V, I = 40mA I = 50 – 200mA I = 50 – 200mA T a = -20 – 75˚C T a = -20 – 75˚C I = 40mA V CC = 16V FF, REW mode Output OPEN PLAY mode Output OPEN Brake mode Output OPEN V CC -1.1 0.1 0.2 0.02 0.01 0.01 0.01 5.0 1.8 100 7.0 V V %/mA %/mA %/˚C %/˚C mA m A mA 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 TYPICAL CHARACT ERISTICS Thermal Derating
• When installed in the board; 50 x 50 x 0.8tmm Glass epoxy board Copper foil area: 50%
• t means the power applied time and single pulse is adopted. 3.0 2.78 2.0 1.42 1.0 0 25 50 75 100 Ambient Temperature T a (˚C) Power Dissipation P d (W) t = t = 30sec t = 10sec APP LICAT IO N EXA M PLE M R T (200 ) R S (500 ) Control signal (20 ) V CC =6V (20 ) M5 4685L Insert, if necessary. m H m F 9 8 76 5 4 32 1