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| MITSUBISHI M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER DESCRIPTION The M56781FP is a semiconductor IC developed as the motor driver used DVD, DVD-ROM, CD-ROM and CD Player. This device include 2 channel BTL drivers and can drive 2 actuators with one IC at the same time. Also, the mute circuit, thermal protection circuit and VREF voltage monitor circuit functions are included. PIN CONFIGURATION (TOP VIEW) GND VM2+ MUTE2B MUTE2A MUTE1 VCC2 VCC1 ININ+ 1 2 3 4 5 6 7 8 9 24 GND 23 VM222 CTL2OUT 21 CTL2+ 20 CTL219 VREF 18 TSDS 17 CTL116 CTL1+ 15 CTL1OUT 14 VM113 GND FEATURES q Low output saturation voltage (typ. 1.35V at 0.5A). q Wide operating supply voltage range (4.5 - 15V). q High current drive capability (maximum 0.9A). q Low crossover distortion. q High frequency capability. M56781FP APPLICATION DVD, DVD-ROM, CD-ROM, CD-PLAYER OPOUT 10 VM1+ 11 GND 12 Outline 24P2Q-A BLOCK DIAGRAM OPOUT IN+ 10 9 IN8 CTL1+ CTL1- CTL1OUT 16 17 15 VM1+ 11 CH1 + - VCC2 A3 + A1 5k x5 5k 5k x5 5k 25k PA + 25k 25k 25k PA + VCC1 2 CH1 MUTE VM114 VCC1 MUTE1 5 H : Mute On L, Open : Mute Off VCC1 7 Vrefm GND 1, 12, 13, 24 19 VREF + 1.4V Vrefm VCC2 TSD 5k x5 A2 + 25k PA + 5k 5k x5 + PA 5k CH2 MUTE VCC2 6 VCC2 2 25k VCC2 H, H Mute On 25k CH2 25k 21 20 22 2 VM2+ 23 VM2- 4 3 18 CTL2+ CTL2- CTL2OUT MUTE2A MUTE2B TSDS MITSUBISHI M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER PIN DESCRIPTIONS Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Symbol GND VM2+ MUTE2B MUTE2A MUTE1 VCC2 VCC1 ININ+ OPOUT VM1+ GND Function GND CH2 Amp. non-inverted output CH2 mute B CH2 mute A CH1 mute Power supply 2 Power supply 1 Op-Amp. inverted input Op-Amp. non-inverted input Op-Amp. output CH1 Amp. non-inverted output GND Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Symbol GND VM1CTL1OUT CTL1+ CTL1TSDS VREF CTL2CTL2+ CTL2OUT VM2GND Function GND CH1 Amp. inverted output CH1 input Amp. output CH1 Amp. non-inverted input CH1 Amp. inverted input Thermal monitor Reference voltage input CH2 Amp. inverted input CH2 Amp. non-inverted input CH2 input Amp. output CH2 Amp. inverted output GND ABSOLUTE MAXIMUM RATING (Ta = 25C) Symbol VCC Io Vin Pd K Tj Topr Tstg Parameter Power supply Output Current Maximum input voltage of each terminals Power dissipation Thermal derating Junction temperature Operating temperature Storage temperature 6 , 7 pins VCC = VBS = 12V 3 3 Conditions Rating 15 900 Units V mA V W C/W C C C , 4 , 5 , 8 , 9 , 16 , 17 , 19 , 20 , 21 pin 0 - VCC 2.97 42.1 150 -20 - +75 -40 - +150 With infinite heatsink With infinite heatsink MITSUBISHI M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER RECOMMENDED OPERATING CONDITIONS Symbol VCC1, 2 Parameter Power supply Min. Limits Typ. 12 Max. Units V ELECTRICAL CHARACTERISTICS (Ta = 25C, VCC1 = VCC2 = VBS2 = 12V, Load = 0 unless otherwise noted.) Symbol ICC1 ICC2 ICC3 VSAT VOFS1 VOFS2 GAIN VMUTEON VMUTEOFF IMUTE Parameter Power supply current - 1 (at Enable condition) Power supply current - 2 (at Mute condition) Power supply current - 3 Output saturation voltage Output Amp. Offset voltage 1 Output Amp. Offset voltage 2 Voltage Gain between input and output Mute ON voltage Mute OFF voltage Mute input current MUTE1 = MUTE2A = MUTE2B = 5V 6 Measurement condition , 7 Min. -- -- -- -- -27 -78 19.1 2.0 -- -- Limits Typ. 1.0 4.5 23 1.35 -- -- 20 -- -- 190 Max. 2.0 7.0 37 1.9 +27 +78 20.8 -- 0.8 250 Units mA mA mA V mV mV dB V V A pins current at VREF = 0. 6 , 7 pins current at VREF = VCTL = 2.5V, MUTE = 5V. 6 , 7 pins current at VREF = VCTL = 2.5V, MUTE = 0V. Top and Bottom power Transistors saturation voltage (at IO = 0.5A). VREF = VCTL = 2.5V, VCC = VBS = 5V (CTL Amp. = buffer.) VREF = VCTL = 2.5V, VCC = VBS = 12V (CTL Amp. = buffer.) {VM(+) - VM(-)} (VCTL - VREF) (CTL Amp. = buffer.) CH2 is Mute-ON mode when MUTE2A = H and MUTE2B = H condition. MITSUBISHI M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER ELECTRICAL CHARACTERISTICS (Ta = 25C, VCC1 = VCC2 = VBS1 = VBS2 = 12V, Load = 0) Symbol VCTLIN VCTLIN VA3IN VA3OUT VA3OFS VREFS VREF1 Parameter CTL Amp. Input voltage range CTL Amp. Output voltage range A3 Amp. Input voltage range A3 Amp. Output voltage range A3 Amp. Offset voltage VREF monitor voltage VREF input current Load = 0 Load = 0 When VREF voltage is under this values, M56781FP makes the Bias shut off. VREF = 2.5V 1.25V VCTL 3.75V Test conditions A1 and A2 Amps. A1 and A2 Amps. Load = 0 Min. 1.5 1.0 0 1.0 -5 -- -1 Limits Typ. -- -- -- -- -- 1.4 -0.37 Max. VCC-1.2 VCC-1.0 VCC-1.9 VCC-1.0 +5 1.8 0.1 Units V V V V mV V mA CH1 AND CH2 INPUT AND OUTPUT CHARACTERISTICS Non-inverted Amp. (Gain = 5.0 times) VREF Reference Voltage VREFM = 5.65V + VM+ VREF (2.5V) Input 0.5V CTL+ R INPUT R CTL+ - + - VM- VM1Inverted Amp. (Gain = 5.0 times) 2.5V VREFM 2.5V VM1+ CTLOUT THERMAL DRATING CURVE (W) With infinite heatsink 5.0 4.5 Power dissipation (Pd) 4.0 Without heatsink 3.0 2.0 1.2 1.0 0 0 25 50 75 100 125 150 (C) Ambient temperature (Ta) MITSUBISHI M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER TYPICAL CHARACTERISTICS Output Saturation Voltage - Load Current Characteristics. VCC1 = VCC2 = 12V (V) 12 Top side saturation voltage 11 0.84 0.89 0.95 1.00 1.05 Output Voltage The voltage range that is able to drive a motor. 2 1 0.06 0 0 100 200 300 400 500 (mA) 0.12 0.18 0.24 0.30 Bottom side saturation voltage FREQUENCY CHARACTERISTICS (dB) 40 GAIN (deg) 180 PHASE 20 GAIN 90 0 PHASE 0 -20 -90 -40 0.03 0.06 0.1 0.3 0.6 1 3 6 10 30 60 100 300 600 (kHz) FREQUENCY -180 Focus VCC2 12V CTL1OUT R + + PA + CTL1+ PA R 5R VREF offset revise resistance VCC1 12V Input VM1+ A1 VM1+ CTL1R 5R Tracking VCC1 VCC2 CTL1OUT 5R Input VREF R 5R offset revise resistance CTL1+ VREF R VREF + VM1PA R 5R IN+ A3 CH2 MUTE + + - MUTE1 IN+ VREF Traverse INOPout MUTE2B MUTE2A MUTE1 A3 + Vrefm1 = 5.65V Vrefm1 = 5.65V R 5R MUTE2A MUTE2B CTL2out CH2 MUTE OPout A2 PA CTL2+ offset revise resistance + CTL2+ R 5R CTL2+ M R + PA R 5R VM25R VREF R - Input (+) A2 + + APPLICATION CIRCUIT This show the 4 actuators drive circuit using two M56781FP. Vrefm2 = 5.65V Vrefm2 = 5.65V R - Tray Input (+) L H Input (-) L Stop (SB) Forward If MUTE2A and MUTE2B are connected to Input(+) and Input(-), this device can be shut off the output when Input(-) and Input(+) are High condition. M56781FP 2-CHANNEL ACTUATOR MOTOR DRIVER MITSUBISHI H Reverse Shut off - Input (-) + VM2+ - CTL2- R 5R Input CTL2out R 5R PA 5R M R 5R VM2PA 5R VM2+ + Tray - 5R R 5R VM1PA IN- CTL1- A1 . DSP |
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