MITSUBISHI <CONTROL / DRIVER IC> M56748FP 4-CHANNEL ACTUATOR MOTOR DRIVER DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M56748FP is a semiconductor IC developed as the motor driver used to CD player, CD-ROM. Vref - in 1 36 Standby Vref - out 2 35 SS . GND N.C 3 34 Standby This circuit includes Standby circuit, TSD circuit and 4-Channel BTL Driver that is able to drive four actuator with one IC. 4 33 Gain4 ●Low Output saturation voltage (typ:1.35V,at 0.5A) 5 32 Vctl4(-) ●Large Operating supply voltage range (4.5 – 15V) VM1(-) 6 31 VM4(-) ●Minimum Crossover distortion VM1(+) 7 30 VM4(+) 8 29 APPLICATION 9 GND CD player, CD-ROM, Video CD 10 11 M56748FP Gain1 Vctl1(-) FEATURES 28 GND 27 26 VM2(+) 12 25 VM3(+) VM2(-) 13 24 VM3(-) Vctl2(-) 14 23 Vctl3(out) Gain2 15 22 Vctl3(-) N.C 16 21 Vctl3(+) Vcc 17 20 Vcc Reg5V 18 19 Regbase Outline 36P2R-D N.C : no connection BLOCK DIAGRAM Vref- out 2 + - Gain1 4 Vctl1(-) 5 Vref - in Vcc Vcc 1 17 20 + - Regbase Reg5V 19 18 + + - + - VM1(+) 7 + - VM1(-) 6 + + - + - VM2(-) 13 + 30 VM4(+) + 31 VM4(-) 21Vctl3(+) + - 1,3,4ch Stand by VM2(+) 12 + CH4 CH1 Gain2 15 Vctl2(-) 14 33 Gain4 32 Vctl4(-) 22 Vctl3(-) 23 Vctl3 out TSD + - 25 VM3(+) + 24 VM3(-) CH3 CH2 34 Standby 36 Standby 35 8 , 9 ,10,11,26,27,28,29 SS.GND PGND ( 8PIN) MITSUBISHI <CONTROL / DRIVER IC> M56748FP 4-CHANNEL ACTUATOR MOTOR DRIVER PIN DESCRIPTIONS Pin No. 1 2 3 4 5 6 7 8 to 11 12 13 14 15 16 17 18 Symbol Vref-in Vref-out N.C Gain1 Vctl1(-) VM1(-) VM1(+) GND VM2(+) VM2(-) Vctl2(-) Gain2 N.C Vcc Reg5V Pin No. Function Reference voltage input terminal Reference voltage output terminal 19 20 21 CH1 amp. gain control terminal CH1 amp. inverted input terminal CH1 amp. inverted output terminal 22 23 24 CH1 amp. non-inverted output terminal GND CH2 amp. non-inverted output terminal CH2 amp. inverted output terminal CH2 amp. inverted input terminal CH2 amp. gain control terminal 25 26 to 29 30 31 32 33 34 Power supply Connects the collector of external PNP 35 36 Symbol Reg-base Vcc Vctl3(+) Vctl3(-) Vctl3(out) VM3(-) VM3(+) GND VM4(+) VM4(-) Vctl4(-) Gain4 Function Connects the base of external PNP Power supply CH3 amp. non-inverted input terminal CH3 amp. inverted input terminal CH3 input amp. output terminal CH3 amp. inverted output terminal CH3 amp. non-inverted output terminal GND CH4 amp. non-inverted output terminal CH4 amp. inverted output terminal CH4 amp. inverted input terminal CH4 amp. gain control terminal L standby input terminal Small signal GND H standby input terminal Standby SS. GND Standby ABSOLUTE MAXIMUM RATINGS (Ta=25˚C) Symbol Vcc Io Vin Pt Kθ Tj Topr Tstg Parameter Condition 17 , 20 pin Supply Voltage Output Current Maximum Input Voltage of each Terminals 1 , 4 , 5 , 14 , 15 , 22 , 23 , 32 , With infinite heatsink Power Dissipation With infinite heatsink Thermal derating Junction temperature Operating temperature Storage temperature 33 , 34 Rating 15 700 0 – Vcc 4.5 27.8 150 -20 – 75 -40 – 125 , 36 pin Unit V mA V W ˚C/W ˚C ˚C ˚C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Vcc Supply voltage IO Output current Min. 4.5 Limits Typ. 5.0 Max. 5.5 500 Unit V mA ELECTRICAL CHARACTERISTICS (Ta=25˚C, Vcc=5V, unless otherwise noted) Symbol Parameter Icc1 Circuit current on no-signal Vsat Output saturation voltage Vofs 1 Vofs 2 Output offset voltage-1 Output offset voltage-2 Gv Voltage gain between input and output Standby Standby H standby-on voltage H standby-off voltage L standby-on voltage L standby-off voltage Test conditions Min. Vref=Vctl=2.5V Top and Bottom saturation voltage of output power Tr. Load Current Io=0.5A CH1, 2, 4, Vref=Vctl=2.5V CH3, Vref=Vctl=2.5V CH1, 2, 4 CH3 uses input amp. as a buffer. CH1, 3, 4 = Standby ON CH1, 3, 4 = Standby OFF CH1, 3, 4 = Standby ON, 18 pin = 5V CH1, 3, 4 = Standby OFF, 18 pin = 5V -35 -57 7.60 13.6 2.0 Limits Typ. 15 Max. 25 1.35 1.90 8.52 14.54 +35 +57 9.35 15.4 0.8 2.0 4.0 Unit mA V mV dB V V V V MITSUBISHI <CONTROL / DRIVER IC> M56748FP 4-CHANNEL ACTUATOR MOTOR DRIVER EXPLANATION OF OPERATION 1. The characteristics between Control voltage and Output voltage CH1, CH2, CH4 AMP. CH3 AMP. The input Amp. (Vctl terminal) consists of the Inverted Amp. and the output (VM+, VM-) is amplified by the different voltage between Vref and Vctl. The voltage gain of this input Amp. is 1 time. Also, the output Amp. is the Master-Slave constitution. Each of Master Amp. (VM+) and Slave Amp. (VM-) have the gain of 1.33 times and the output voltage refer to the about Vcc/2. The three terminals (Inverted, non-inverted and output) of Input Amp. go to external pins. So, the Amp. constitution (for example, Buffer Amp.) and the Gain can be adjusted by the external resistors. The output Amp., is the same with CH1, 2 and 4, is consisted of the Master-Slave Amp. Each of the MasterAmp. (VM+) and Slave Amp. (VM-) have the gain of 2.66 and the output voltage refer to the about Vcc/2. Output of non-inverted Amp. (Gain=1.33) Vref + + Output of non-inverted Amp. (Gain=2.66) VM+ CH1 + Gain Vref + + CH3 Vctl+ + Vctl VM- Vctl- + + Vctlout 10kΩ 10kΩ Input of inverted Amp. (Gain=1) Output of inverted Amp. (Gain=1.33) CH1, 2, 4 Amp. Input Amp. (sets gain externally) Output of inverted Amp. (Gain=2.66) CH3 Amp. (uses input Amp. as a Buffer Amp.) Vctl 0.5V 1V Vref (2.5V) VM- Vref (2.5V) VM+ Vctl+ VM+ VM- 1.33V 1.33V = Vcc/2 = Vcc/2 1.33V Gain= 2.66V 1V = 2.66 TIMES = 8.5 db VM+ 1.33V Gain= 2.66V 0.5V = 5.32 TIMES = 14.5 db VM- MITSUBISHI <CONTROL / DRIVER IC> M56748FP 4-CHANNEL ACTUATOR MOTOR DRIVER TYPICAL CHARACTERISTICS Output saturation voltage–Load current characteristics (Vcc=5V) (V) Output voltage 5 Top side saturation voltage 0.84 4 0.89 0.95 1.00 1.05 Output H voltage 3 The voltage range that is able to drive a motor 2 1 Output L voltage 0.06 0.18 0.12 0.24 0.30 Bottom side saturation voltage 100 200 300 400 500 FREQUENCY CHARACTERISTICS (dB) 40 (mA) Load current (deg) 180 PHASE GAIN 20 90 GAIN(8.5dB) 0 0 PHASE -20 -90 -40 -180 0.03 0.06 0.1 0.3 0.6 1 3 6 10 FREQUENCY (KHZ) Power Dissipation (Pdp) (W) THERMAL DERATING With infinite heatsink 5.0 4.5 4.0 Without heatsink 3.0 2.0 1.2 1.0 0 25 50 75 100 125 Ambient Temperature (Ta) (˚C) 150 30 60 100 300 600 MITSUBISHI <CONTROL / DRIVER IC> M56748FP 4-CHANNEL ACTUATOR MOTOR DRIVER Application Example 15K Vref-in 1 2.5V Vref Stand by TSD + OP1 - 36 2 Vref-out N.C 5K 3 4 2K 23K 15K 5K + - + - Gain1 OP1 OP1 Gain4 10K 10K 10K 10K VM1(–) + - PA VM1(+) 7 + PA Pre-driver 6 + PA - VM4(–) PA + VM4(+) 28 11 26 VM2(+) + - Pre-driver PA M VM2(–) PA + Pre-driver 27 12 17 VM3(+) PA + VM3(–) Gain2 Spindle 25 M 24 0.022uF 23 560K 10K Vctl3(–) + OP1 N.C Vcc + OP1 Vcc 16 + PA - Vctl3(out) 14 10K Tracking GND 10 15 VCTL 30 9 GND VCTL 31 29 13 Standby 33 8 Slide SS.GND 32 Pre-driver Focus 35 Standby 34 5 VCTL 7.5V 23K 5K OP1 + 22 21 82K 10K 10K Vcc 20 18 19 R Regbase 5V 1uF 10uF 560K pwm1 Vcc Reg5V 3R pwm2 0.022uF Vctl3(+) + - 82K