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MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
DESCRIPTION
The M56749FP is a semiconductor integrated circuit designed for a CD-ROM actuator driver. This device can function 4 channel actuators by 1 chip due to include 4 channel BTL drivers. Also, this device include a mute circuit, a Vcc check circuit and TSD function.
PIN CONFIGURATION (TOP VIEW)
Vrefm-out Mute3chMute4chVctl1L Vctl1H 1 2 3 4 5 6 7 36 35 34 33 32 31 30 Vref Vrefm SS . GND Vctl4L Vctl4H VM4(-) VM4(+)
FEATURES
qLower saturation voltage. (typical 1.35V at load current 500mA) qWide supply voltage range. (4.5V to 13.2V) qLower cross-over distortion.
VM1(-) VM1(+)
M56749FP
8 9 GND 10 11 VM2(+) 12 13 14 15 16 17 18
29 28 27 26 25 24 23 22 21 20 19 VM3(+) VM3(-) Vctl3(-) Vctl3(+) Vm2 Vbs2 -Por GND
APPLICATION
CD-ROM
VM2(-) Vctl2H Vctl2L Vm1 Vbs1 Vcc
Outline 36P2R-D
BLOCK DIAGRAM
Vm1 Vbs1 16 17 Vref 36 Vcc 18 - POR -Por 19 Vrefm 35 Vrefm-out 1 Vbs2 Vm2 20 21
+ Vctl1L Vctl1H 4 5
+ + +
Vm2
+ + +
33 Vctl4L 32 Vctl4H
VM1(+) 7 VM1(-) 6
CH1
Vm2 2
+ -
30 VM4(+) 31 VM4(-)
CH4
22 Vctl3(+) Vctl2L 15 Vctl2H 14 VM2(+) 12 VM2(-) 13
+ + +
Mute on : Low or open
+ 23 Vctl3(-) 4ch TSD CH3
3ch CH2
+ +
25 VM3(+) 24 VM3(-)
2 Mute3ch-
3 Mute4ch-
34 SS.GND
8
-
11 26
-
29
PGND (8PIN)
MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
PIN DESCRIPTION
Pin No.
1 2 3 4 5 6 7 8
to
12 13 14 15 16 17 18
11
Symbol Vrefm-out Mute3chMute4chVctl1L Vctl1H VM1(-) VM1(+) GND VM2(+) VM2(-) Vctl2H Vctl2L Vm1 Vbs1 Vcc
Function Vm2 middle voltage output 3th channel mute terminal 4th channel mute terminal 1st channel Low gain input 1st channel High gain input 1st channel inverted amp. output 1st channel non-inverted amp. output GND 2nd channel non-inverted amp. output 2nd channel inverted amp. output 2nd channel High gain input 2nd channel Low gain input Motor power supply-1 Bootstrap power supply-1 5V power supply
Pin No.
19 20 21 22 23 24 25 26
to
30 31 32 33 34 35 36
29
Symbol -Por Vbs2 Vm2 Vctl3(+) Vctl3(-) VM3(-) VM3(+) GND VM4(+) VM4(-) Vctl4H Vctl4L SS. GND Vrefm Vref
Function Vcc check signal output Bootstrap power supply-2 Motor power supply-2 3th channel non-inverted amp. input 3th channel inverted amp. input 3th channel inverted amp. output 3th channel non-inverted amp. output GND 4th channel non-inverted amp. output 4th channel inverted amp. output 4th channel High gain input 4th channel Low gain input Small signal GND Vm2 middle voltage monitor Reference voltage input
ABSOLUTE MAXIMUM RATINGS (Ta=25C)
Symbol Vbs Vm Vcc Io Vin Pt K Tj Topr Tstg Parameter Bootstrap power supply Motor power supply 5V power supply Output Current Maximum input voltage of terminals Power dissipation Thermal derating Junction temperature Operating temperature Storage temperature Conditions and 20 pins input voltage 16 and 21 pins input voltage 18 pin input voltage
17 2,3,4, Free Air Free Air 5
,
14 , 15 , 19 , 22 , 23 , 32 , 33 , 35 , 36
pins
Rating 15 15 7.0 700 0 - Vcc 1.2 9.6 150 -20 - +70 -40 - +150
Unit V V V mA V W mW/C C C C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min. 4.5 Limits Typ. 5.0 5.0 Vm+1.0 Max. 5.5 Unit V V V
Vcc 5V power supply Vm1,Vm2 Motor power supply Vbs1,Vbs2 Bootstrap power supply
MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=Vbs1=Vbs2=Vm1=Vm2=5V, no-load current unless otherwise noted.)
Symbol Icc1 Icc2 Vsat Vofs1 Vofs2 VPor Parameter Sleep Mode Supply current-1 Sleep Mode Supply current-2
16 18
Conditions ,
17 , 20 , 21
Min.
pins input current (Vref=Vctl=2.1V)
pin input current (Vref=Vctl=2.1V) Top and Bottom saturation voltage. Saturation voltage Load current 500mA. 1st, 2nd channel. Vref=Vctl=2.1V, Vm1=5V Output offset voltage-1 Output offset voltage-2 3th, 4th channel. Vref=Vctl=2.1V,Vm2=Vbs2=12V Vcc voltage when 19 pin (-POR circuit) Vcc check voltage ( 19 pin L to H) returns to High from Low condition. 3th and 4th channels Mute-on. 3th and 4th channels Mute-off. 2 and 3 pin input current at 5V input voltage. 1 pin output voltage at load current 1.0mA when Vrefm ( 35 pin) inputs 0V. 1 pin output voltage at load current 0.5mA when Vrefm ( 35 pin) inputs 5V.
36
Limits Typ. 20 3.0 1.35
Max. 30 6.0 1.90 +26 +100
Unit mA mA V mV mV V mV V V A V V
-26 -100 4.10 80 2.0 170 0.15 Vbs2- Vbs21.9 2.25 1.5 2.1 4.25 130
4.40 180 0.8 250 0.3
VPor
Vcc check circuit Hysteresis Vmute-on Mute-on voltage Vmute-off Mute-off voltage Imute Mute terminals input current VrefmL VrefmH Vrefin Vref amp. Low output voltage Vref amp. High output voltage Vref amp. Input voltage range
pin input voltage range.
Vcc-1.2
V
Voltage gain of each channel
Symbol Gain1L Gain1H Gain2L Gain2H Gain3 Gain4L Gain4H Parameter 1st channel voltage gain (L) 1st channel voltage gain (H) 2nd channel voltage gain (L) 2nd channel voltage gain (H) 3th channel voltage gain 4th channel voltage gain (L) 4th channel voltage gain (H) {VM1(+)-VM1(-)} (Vctl1L-Vref) {VM1(+)-VM1(-)} (Vctl1H-Vref) {VM2(+)-VM2(-)} (Vctl2L-Vref) {VM2(+)-VM2(-)} (Vctl2H-Vref) {VM3(+)-VM3(-)} Vctl3(+)-Vctl3(-) {VM4(+)-VM4(-)} (Vctl4L-Vref) {VM4(+)-VM4(-)} (Vctl4H-Vref) Conditions (Vctl1L= (Vctl1H= (Vctl2L= (Vctl2H=
4
Min. pin) pin) pin) pin) 8.86 14.6 11.1 14.5 -3.07 11.1 14.4
Limits Typ. 9.77 15.6 12.0 15.4 1.94 12.0 15.3
Max. 10.6 16.4 12.9 16.2 -1.33 12.9 16.1
Unit db db db db db db db
5
15
14
(Vctl3(+)= 22 pin) (Vctl3(-)= 23 pin) (Vctl4L=
33
pin)
(Vctl4H= 32 pin is connected 10k)
MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
Input and output characteristics of each channels

Output of non-inverted Amp. (Gain = X2.0) Vref 36 + Reference voltage (Vref=2.1V) + 7 VM1+ Vref (2.1V)
The voltage between the input and output when a voltage is inputted from Vctl( 4 pin).
Vctl1L 1V
Vctl1L Vctl1H
10K 4 5 5K
+ 7.5K
+ -
6 VM1Vref (2.1V)
VM1- VM1+ 1.5V 1.5V
(Unit of resistance: )
Output of inverted Amp. (Gain = X2.0)

non-inverted Amp. (Gain = X2) Vref 36 + Reference voltage (Vref=2.1V) + 12 VM2+ Vref (2.1V)
The voltage between the input and output when a voltage is inputted from Vctl2( 15 pin).
Vctl2L 1V
Vctl2L
7.5K 15 5K
+ 7.5K
+ -
13 VM2Vref (2.1V)
VM22.0V 2.0V
VM2+
Vctl2H 14
inverted Amp. (Gain = X2)

non-inverted Amp. (Gain = X2) Vref 36 10K Vctl3+ 22 + Vctl3- 23 10K 2K + 2K + 25 VM3+ Vref (2.1V)
The voltage difference of 1V is inputted between Vctl3- and Vctl3+.
Vctl31V Vctl3+
Reference voltage (Vrefm= Vm2/2)
+ -
24 VM3Vrefm (Vm2/2)
VM30.8V
VM3+
inverted Amp. (Gain = X2)

non-inverted Amp. (Gain = X5) Vref 36 + Reference voltage (Vrefm= Vm2/2) inverted Amp. (Gain = X5) + 30 VM4+ Vref (2.1V)
Vctl4H ( 32 pin) is connected 10k and the voltage between a input (Vin4) and out when a voltage is inputted from Vin4.
Vin4 1V
Vin4
Vctl4L 33 10k 18K 32 2K Vctl4H
+ 7.2K
+ -
31 VM4VM4Vrefm (Vm2/2) 3.0V 3.0V VM4+
MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
BASICALLY CHARACTERISTICS (Typical value)
Output saturation voltage and Load current characteristic (Vbs=Vm=Vcc=5V) 5.0 (V)
Top side saturation voltage 0.84 0.89 0.95 1.00 1.05
4.0 Output voltage
3.0
This device can use this voltage value for actuator drive.
2.0
1.0
0.06 0.12 0.18 0.24 0.30
Bottom side saturation voltage
100
200
300 Load current
400
500 (mA)
FREQUENCY CHARACTERISTIC
40 (dB) 180 (dB)
20
90
GAIN
GAIN 0
PHASE
0 PHASE
-20
-90
-40 0.03 0.06 0.1 0.3 0.6 1 3 6 Frequency 10 30 60 100 300 600 (kHZ)
-180
THERMAL DERATING
6.0 Power dissipation (Pdp) (W) 5.0
4.5
With infinite heatsink
4.0
Without heatsink
3.0 2.0
1.2
1.0
0
25 50 75 100 125 Ambient temperature (Ta) (C)
150
MITSUBISHI
M56749FP
4 CHANNEL ACTUATOR MOTOR DRIVER
APPLICATION CIRCUIT
1 Vrefm-out
3ch 25K 25K 23K
4ch
OP1
Vm2
10K
OP1
36 Vref
2.1V
35 Vrefm 34 SS . GND
2 Mute3ch3 Mute4ch-
23K
10K
5V
4 Vctl1L
10K
OP1
OP1
18K
33 Vctl4L
5 Vctl1H 6 VM1-
5K
7.5K
7.2K
2K
32 Vctl4H 31 VM4-
PA
PA
Tracking
1ch
7 VM1+ 8 GND 9 GND 10 GND 11 GND 12 VM2+
10K 10K 10K 5K
10K 2.5K 12.5K 10K
M
30 VM4+
Slide
4ch
PA +
PA +
29 GND 28 GND 27 GND 26 GND 25 VM3+
10K 5K
2.5K 12.5K
10K 5K
5K
10K
PA +
PA +
Focus
2ch
13 VM2-
10K 10K
PA
10K 5K
5K
10K
10K 10K
M
24 VM323 Vctl3 22 Vctl3+
Tray
3ch
PA
14 Vctl2H 15 Vctl2L
2K 5K 7.5K
OP1
10K
7.5K
OP1
2K
10K
21 Vm2
5V
16 Vm1 TSD
12V
12V
17 Vbs1
20 Vbs2
18 Vcc
Vcc (Unit of resistance: ) -Por
20K
19 - Por
function * When the(Bootstrap pins). does not use, terminals and
16 21
17
and
20
pin must be connected with Motor power supply

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