MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
The M56788FP is a semiconductor integrated circuit in order 5ch
actuator.
FEATURES
APPLICATION
MD, CD-audio, CD-ROM, VCD,DVD etc.
1
42 REG+
OUT3
2
41 REGB
IN3-
3
40 IN1+
VBS2
4
39 VBS1
Vm2
5
38 Vm1
N.C
6
37 IN1-
GND
7
36 OUT1
IN3+
8
35 VM1-
VM3-
9
34 VM1+
VM3+
10
GND
11
VM4+
12
VM4-
13
30 OUT2
VM5+
14
29 GND
VM5-
15
28 IN2-
OUT5
16
27 IN2+
VBS1
39
33 GND
32 VM2+
31 VM2-
IN5-
17
26 MUTE1
IN5+
18
25 MUTE2
IN4+
19
24 SS.GND
IN4-
20
23 VREF
OUT4
21
22 VREFO
Outline
Vm1
38
M56788FP
● Low saturation voltage.
● 3.3V DSP available.
● There are two motor power supplies.
Vm1 CH1,2 motor power supply-1
Vm2 CH3,4,5 motor power supply-2
● Built-in OP amp. for Regulator.
(It enables a Regulator which consists of external PNP Tr.s and
resistors.)
● Flexible Input amp. setting.(It enables PWM control.)
● Low cross-over distortion.(4.5V–13.2V)
● Wide supply voltage range.(4.5V–13.2V)
● Built-in Thermal Shut Down circuit.
● Built-in Mute circuit.(two systems)
MUTE1:CH1–4, MUTE2:CH5
CH3IN
42P9R-B
VBS2
4
Vm2
5
VBS2
+
-
R
E1
VBS1
R
VM1(+) 34
+
-
CH1
VM1(-) 35
+
x5
VM2(+) 32
+
-
CH2
VM2(-) 31
+
x5
R
-
Vm1
Vm2
+
VBS1
+
IN1+ 40
IN1- 37
OUT1 36
-
Vrefm1
R
Vrefm2
Hi:Sleep
E2
SLEEP
Low,Open
MUTE ON
VREG
1–4
CH
VREF
+
+
+
IN3IN3+
OUT3
CH3IN
10 VM3(+)
9 VM3(-)
CH4
+
-
12 VM4(+)
x8
+
13 VM4(-)
VBS2
E4
VBS1
VBS2
REGB 41
CH3
VBS1
VBS1
VREFO 22
VREF 23
VBS2
VREFO
BIAS
+
3
8
2
1
VBS2
OUT2 30
+
E3
+
x8
VBS1
IN2- 28
IN2+ 27
N.C: no connection
VBS2
CH5
x8
5CH
TSD
1.25v
VBS2
E5
REG+ 42
24
26
MUTE1
SS.GND
25
7 11 29 33
MUTE2
GND(4PINS)
20 IN419 IN4+
21 OUT4
+
+
+
-
14 VM5(+)
+
15 VM5(-)
17 IN518 IN5+
16 OUT5
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
PIN FUNCTION
Terminal
1
2
3
4
5
6
7 , 11
8
9
10
12
13
14
15
16
17
18
19
20
21
Symbol
CH3IN
OUT3
IN3VBS2
Vm2
N.C
GND
IN3+
VM3(-)
VM3(+)
VM4(+)
VM4(-)
VM5(+)
VM5(-)
OUT5
IN5IN5+
IN4+
IN4OUT4
Terminal function
CH3 non-inverted input
E3 amplifier output
E3 amplifier inverted input
Bootstrap power supply
Motor power supply
N.C
Motor GND
E3 amplifier non-inverted input
CH3 inverted output
CH3 non-inverted output
CH4 non-inverted output
CH4 inverted output
CH5 non-inverted output
CH5 inverted output
E5 amplifier output
E5 amplifier inverted input
E5 amplifier non-inverted input
E4 amplifier non-inverted input
E4 amplifier inverted input
E4 amplifier output
Terminal
22
23
24
25
26
27
28
29 , 33
30
31
32
34
35
36
37
38
39
40
41
42
Symbol
VREF0
VREF
SS.GND
MUTE2
MUTE1
IN2+
IN2GND
OUT2
VM2(-)
VM2(+)
VM1(+)
VM1(-)
OUT1
IN1Vm1
VBS1
IN1+
REGB
REG+
Terminal function
Reference voltage output
Reference voltage input
Small signal GND
CH5 mute
CH1–4 mute
E2 amplifier non-inverted input
E2 amplifier inverted input
Motor GND
E2 amplifier output
CH2 inverted output
CH2 non-inverted output
CH1 non-inverted output
CH1 inverted output
E1 amplifier output
E1 amplifier inverted input
Motor power supply
Bootstrap power supply
E1 amplifier non-inverted input
Regulator PNP base connect
Regulator voltage setting resistor
ABSOLUTE MAXIMUM RATING (Ta=25˚C )
Symbol
VBS
Vm
Io
Parameter
Bootstrap power supply
Motor power supply
Output Current
Vin
Maximum input voltage of terminals
Pt
Kq
Tj
Topr
Tstg
Power dissipation
Thermal derating
Junction temperature
Operating temperature
Storage temperature
Conditions
Rating
15
15
500
0–VBS1
0–VBS2
1.2
9.6
150
-20–+75
-40–+150
VBS power supply
Vm power supply
23, 25, 26, 27, 28, 37, 40PIN
1, 3, 8, 17, 18, 19, 20, 42PIN
Free Air
Free Air
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Vm1,Vm2 Motor power supply
VBS1,VBS2 Bootstrap power supply
Min
Limits
Typ
5.0
Vm*+1.0
Max
Units
V
V
Units
V
V
mA
V
V
W
mW/˚C
˚C
˚C
˚C
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
ELECTRICAL CHARACTERISTICS (Ta=25˚C, VBS=Vm=5V unless otherwise noted.)
Symbol
Icc1
Parameter
Conditions
Min
Limits
Typ
35
Max
50
Units
Supply current-1
VBS1,VBS2,Vm1,Vm2 current
Supply current-2
VBS1,VBS2,Vm1,Vm2 current at Sleep Mode
(MUTE 1=MUTE 2=0V).
1.3
2.2
mA
Vsat1
CH1–5 Saturation voltage
Top and Bottom saturation voltage.
Load current 0.5A and no bootstrap.
1.35
1.9
V
Voff1
Voff2
Voff3
Voff4
Voff5
CH1 output offset voltage
CH2 output offset voltage
CH3 output offset voltage
CH4 output offset voltage
CH5 output offset voltage
41
41
47
47
47
mV
mV
mV
mV
mV
Icc2
Gain1
Gain2
Gain3
Gain4
Gain5
VinE
VoutE
VofE
IinE
VREFO=OUT1=1.5V
VREFO=OUT2=1.5V
VREFO=CH3IN=1.5V
VREFO=OUT4=1.5V
VREFO=OUT5=1.5V
CH1 Voltage Gain between input {VM1(+)–VM1(-)}
and output
(OUT1–VREFO)
CH2 Voltage Gain between input {VM2(+)–VM2(-)}
and output
(OUT2–VREFO)
CH3 Voltage Gain between input {VM3(+)–VM3(-)}
and output
(CH3IN–VREFO)
CH4 Voltage Gain between input {VM4(+)–VM4(-)}
and output
(OUT4–VREFO)
CH5 Voltage Gain between input {VM5(+)–VM5(-)}
and output
(OUT5–VREFO)
E1,2,3,4,5 amplifier input voltage E1,E2 amp
range
E3,E4,E5 amp
E1,E2 amp(no load)
E1,2,3,4,5 amplifier output
voltage range
E3,E4,E5 amp(no load)
E1,2,3,4,5 amplifier offset voltage Vin = 1.5V(at buffer )
E1,2,3,4,5 amplifier input current IN+=IN-=1.5V
Reg-out
Regulator output voltage range
VinVREF
VREF amplifier input voltage
range
VofVREF
IinVREF
Vmute-on
Vmute-off
Imute
At VBS=7.5V, Regulator voltage setting
resistor 10K/30K, connects external PNP.
-41
-41
-47
-47
-47
4.5
5
5.5
V/V
4.5
5
5.5
V/V
7.2
8
8.8
V/V
7.2
8
8.8
V/V
7.2
8
8.8
V/V
0.5
0.5
0.5
0.5
-10
-1.0
-0.05
VBS1-2.0
VBS2-2.0
VBS1-0.5
VBS2-0.5
+10
0
V
V
V
V
mV
µA
4.8
5.0
5.2
V
VBS1-2.0
V
-0.05
+10
0
0.8
mV
µA
V
V
170
250
µA
1.0
VREF amplifier offset voltage
VREF amplifier input current
Mute-on voltage
Vin=1.5V ±2mA load
VREF=1.5V
Mute-on
-10
-1.0
Mute-off voltage
Mute-off
Mute terminal input current(at 5V input
voltage)
2.0
Mute terminal input current
mA
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
MUTE Function
M56788FP has 2 MUTE terminals and the functions are as follows.
MUTE 1
26 pin
High
Low/Open
High
Low/Open
MUTE 2
25 pin
High
High
Low/Open
Low/Open
Power and Control Amp.
circuits of CH1 to CH4.
ENABLE
DISABLE
ENABLE
DISABLE
Power and Control Amp.
circuits of CH5.
ENABLE
ENABLE
DISABLE
DISABLE
VREF Amp.
VREG Amp.
ENABLE
ENABLE
ENABLE
DISABLE
ENABLE
ENABLE
ENABLE
ENABLE
When both MUTE1 inputs and MUTE 2 inputs are low voltage or open, the IC is in Sleep Mode.
INPUT and OUTPUT CHARACTERISTICS of EACH CHANNELS
Vm1
CH1,2
<INPUT>
OUT
r
r
+
Vrefm1 Amp.
Vrefm1
1.5V
R
VREFO
+
VREF
1.5V
R
+
-
VM+
2.5R
<OUTPUT>
Vref Amp.
OUT
R
ININ+
Input Amp.
R
VM-
VM-
0.5V
Vrefm1
(Vm/2)
0.5V
2.5R
Gain=x5
Reference 1.5V
Vm2
CH3
VM+
2.5R
+
-
+
0.2V
2.5R
<INPUT>
CH3IN
+
r
r
Vrefm2 Amp.
Vrefm2
1.5V
R
VREFO
+
VREF
1.5V
R
0.2V
4R
+
-
VM3+
4R
<OUTPUT>
VM3+
Vref Amp.
CH3IN
R
OPOUT
+
OPOP+
OP Amp.
R
+
-
VM3-
4R
VM3-
0.8V
Vrefm2
(Vm/2)
0.8V
4R
Gain=x8
Reference 1.5V
Vm2
CH4,5
<INPUT>
OUT
r
r
+
Vrefm2 Amp.
Vrefm2
1.5V
R
VREFO
VREF
1.5V
+
+
-
VM+
4R
<OUTPUT>
Vref Amp.
OUT
ININ+
R
R
VM+
4R
+
-
+
Input Amp.
Reference 1.5V
R
0.2V
4R
VM-
0.8V
Vrefm2
(Vm/2)
0.8V
4R
Gain=x8
VM-
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
I/O terminal Equivalent circuit
(1)E1, E2 input amplifier
I/O terminal equivalent circuit
(2)E3, E4, E5 input amplifier
I/O terminal equivalent circuit
(IN1+, IN1-, OUT1, IN2+, IN2-, OUT2)
(IN3+, IN3-, OUT3, IN4+, IN4-, OUT4, IN5+, IN5-, OUT5)
VBS1
VBS2
E3 amplifier
isn't include.
GND
VBS1
GND
IN*-
VBS1
IN*+
GND
VBS1
GND
OUT*
(3)VREF amplifier I/O terminal
equivalent circuit
VBS2
GND
IN*-
VBS2
IN*+
GND
VBS2
OUT*
(3)VREG amplifier I/O terminal
equivalent circuit
(VREF, VREFO)
(REG+, REGB)
VBS1
VBS2
1.25V
9.5K
2K
GND
VBS1
GND
VREF
VBS1
VREFO
(5)CH3IN input terminal equivalent circuit
Please refer to the application circuits.
(It shows the circuitry of the IC.)
GND
VBS2
GND
REG+
REGB
(3)MUTE equivalent circuit
(MUTE1, MUTE2)
MUTE*
GND
VBS1
2K
23K
GND
VBS2
CH3IN
VBS2
23K
GND
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
I/O terminal equivalent circuit
(7)CH1,CH2 power I/O terminal equivalent circuit
(VM1(+), VM1(-), VM2(+), VM2(-))
VBS1
Vm1
VM
The equivalent circuits of an output stage of power amplifiers are
shown in(7) and(8) .
The power supplies of CH1, CH2 are Vm1.
And the power supplies of CH3, CH4, CH5 are Vm2.
The source side of the power amplifier output stage consists of a
PNP and a NPN.
In the case of the CH1 and CH2, the emitta of the PNP is
connected to VBS1, and in the case of the CH3, CH4 and CH5, it
is connected to VBS2. So the power supplies of the PNP can be
adjusted externally.
GND
(8)CH3,CH4,CH5 power amplifier output terminal equivalent circuit
(VM3(+), VM3(-), VM4(+), VM4(-), VM5(+), VM5(-))
VBS2
Vm2
VM
GND
[About bootstrap advantage]
The output stage of the power amplifier consists of the preceding
components. If VBS* is provided with higher voltage input than
Vm*(The recommendationvoltage is Vm*+1V) externally, the
output range can be wider than that of VBS*=Vm*.
Please take advantage of this bootstrap function for the system
which has many power supplies. And it is the same with the
external bootstrap circuit which provides VBS* with higher voltage
inputs than Vm*.
Also the bootstrap can decrease the saturation voltage at the
source side of the power amplifier output stage. Therefore, when
the outputs of the power amplifiers which drive motors and
actuators are fully swung, the power dissipation of the IC will be
decreased.
THERMAL DERATING
6.0
(W)
3.6W using N-type board
Power Dissipation (Pdp)
5.0
4.0
2.6W using P-type board
3.0
2.0
1.0
0
25
50
75
100
Ambient Temperature Ta(˚C)
125
150
(˚C)
This IC's package is POWER-SSOP, so improving the board on
which the IC is mounted enables a large power dissipation without
a heat sink.
For example, using an 1 layer glass epoxy resin board, the IC's
power dissipation is 2.6W at least. And it comes to 3.6W by using
an improved 2 layer board.
The information of the N, P type board is shown in the board
information.
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT No.1 single input (linear signal) • Direct voltage control
5V
VREFO
VBS1
VBS2
Vrefm1
VREFO
+
E3
E1
IN3-
-
+ -
IN1OUT1
R1
VREF
IN3+
IN1+
VCTL1
1.5V
R
+ -
Vm1
VREFO
Vrefm2
VREFO
+
R
5V
Vref
+ -
Vm2
R
-
R
5V
VCTL3
OUT3
R6
R2
R5
CH3IN
M
+ -
VM3-
E2
E4
x2.5
+
+ -
VM2+
IN4+
-
R4
IN4-
TRACKING
OUT4
VREFO
VCTL4
R8
R7
x5
+ -
VM2-
x4
x2.5
VM4+
- +
R3
x8
SPINDLE
+ -
VCTL2
x2.5
x4
IN2+
IN2OUT2
VM3+
- +
Ra
FOCUS
x4
x5
VM1-
VREFO
x2.5
- +
+ -
VM1+
M
x8
VM4-
- +
x4
SLED
VBS
REGB
REG+
-
Reg-amp
10K
E5
1.25V
+
+
14K
IN5+
-
3V
IN5OUT5
SS.GND
VM5+
1–4CH
x4
SS.GND
M
x8
TSD
GND
(4PINS)
- +
5CH
x4
VCTL5
R10
VM5-
ROADING
MUTE2
SLEEP
Hi:Sleep
- +
MUTE1
VREFO
R9
MITSUBISHI <CONTROL / DRIVER IC>
M56788FP
5 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT No.2 Differential PWM input • Direct voltage control (FOCUS, TRACKING, SPINDLE,
SLED, ROADING)
5V
VREFO
VBS1
VBS2
VREFO
R1
IN3R6
OUT3
CH3IN
x2.5
-
PWM2
R7
IN4R8
-
C4
+
IN4+
R7
PWM1
- +
- +
+ -
R3
C4
x5
VM2-
+ -
PWM1
PWM2
TRACKING
OUT4
x4
x2.5
M
x8
SLED
VBS
VM4-
- +
x4
VREFO
VM4+
- +
R3
E4
x2.5
+
R4
VM3-
E2
C2
VM2+
M
x8
x4
IN2+
IN2OUT2
R4
x2.5
SPINDLE
+ -
VM1-
VM3+
-
Ra
FOCUS
x4
x5
C3
VREFO
It can be opened at
Propagation
characteristic check.
R8
+
VM1+
C2
R6
E3
E1
C3
+
+ -
R2
C1
IN1OUT1
-
R1
R5
Vrefm1
R5
R
C1
VREFO
PWM2
VREF
IN3+
IN1+
VREFO
1.5V
PWM1
Vrefm2
+ -
Vm1
R2
Vref
+
PWM1
PWM2
R
5V
R
+ -
Vm2
-
R
5V
VREFO
-
10K
Reg-amp
E5
1.25V
IN5+
IN5-
C5
+
REG+
-
+
14K
R10
REGB
3V
R10
OUT5
SS.GND
C5
PWM2
GND
(4PINS)
VM5-
PWM1
x4
SS.GND
M
x8
TSD
R9
R9
1–4CH
- +
5CH
x4
VM5+
ROADING
MUTE2
SLEEP
Hi:Sleep
- +
MUTE1