4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
4-ch BTL Motor Driver for CD Players
Monolithic IC MM1469
Outline
This IC is a 4-ch BTL driver developed for driving motors and actuators for CD players.
With built-in 3.3V (MM1469PH) or 5.0V (MM1469XH) regulator and general-purpose op-amp, it supports a
variety of applications.
Features
du
c
ts
1. External resistor allows gain adjustment.
2. Few external parts
3. Built-in 3.3V or 5.0V regulator (external PNP-Tr required)
4. Built-in general-purpose op-amp
5. Built-in thermal shutdown circuit
Package
Pr
o
HSOP-28A
Applications
(MM1469XH)
28
27
Ph
as
ed
O
Block diagram
ut
1. CD radio cassette players
2. VCD
26
25
24
D.BUF D.BUF
23
1kΩ
22
VCC
10kΩ
T. S. D : Thermal Shut Down
D. BUF : Driver Buffer
21
20
18
17
16
15
13
14
D.BUF D.BUF
VCC 1kΩ
13kΩ
19
10kΩ
Level shift
Level shift
13kΩ
2.5V
50kΩ
Level shift
10kΩ
13kΩ
13kΩ
10kΩ
2
3
4
10kΩ
1kΩ
1kΩ
D.BUF D.BUF
1
50kΩ
10kΩ
(3.3kΩ)
Level shift
T.S.D
DRIVER MUTE
D.BUF D.BUF
5
6
7
8
9
10
note Constane in parenehesis is regulator output voltage 3.3V(MM1469PH).
11
12
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Pin configuration
1
28 SUBGND
ch1 OUT-B
2
27 ch4 OUT-A
ch1 IN-A
3
26 ch4 OUT-B
ch1 IN-B
4
25 ch4 IN-A
Tr-B
5
24 ch4 IN-B
VREG-OUT
6
23 BIAS-IN
MUTE
7
22 VCC
GND
8
ch2 IN-B
9
ch2 IN-A
10
ch2 OUT-B
11
O
ut
Pr
o
du
c
ts
ch1 OUT-A
21 VCC
20 ch3 IN-B
19 ch3 IN-A
Ph
as
ed
18 ch3 OUT-B
ch2 OUT-A
12
17 ch3 OUT-A
SUBGND
13
16 OP IN(+)
OP OUT
14
15 OP IN(–)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ch1 OUT–A
ch1 OUT–B
ch1 IN–A
ch1 IN–B
Tr–B
VREG – OUT
MUTE
GND
ch2 IN–B
ch2 IN–A
ch2 OUT–B
ch2 OUT–A
SUBGND
OP OUT
15
16
17
18
19
20
21
22
23
24
25
26
27
28
OP IN(–)
OP IN(+)
ch3 OUT–A
ch3 OUT–B
ch3 IN–A
ch3 IN–B
VCC
VCC
BIAS–IN
ch4 IN–B
ch4 IN–A
ch4 OUT–B
ch4 OUT–A
SUBGND
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Terminal explanations
Pin No.
Pin Name
Function
1
ch1–OUT A
Driver ch1 negative output
12
ch2–OUT A
Driver ch2 negative output
17
ch3–OUT A
Driver ch3 negative output
27
ch4–OUT A
Driver ch4 negative output
Internal equivalent circuit
VCC
12kΩ
2
11
ch1–OUT B
ch2–OUT B
12kΩ
1
2
Driver ch1 positive output
12
11
Driver ch2 positive output
17
18
27
26
ch3–OUT B
Driver ch3 positive output
26
ch4–OUT B
Driver ch4 positive output
3
ch1–IN A
Driver ch1 input
10
ch2–IN A
Driver ch2 input
19
ch3–IN A
Driver ch3 input
25
ch4–IN A
Driver ch4 input
600Ω
Pr
o
du
c
ts
18
600Ω
VCC
ut
10kΩ
ch1–IN B
Driver ch1 input, gain adjustment pin
9
ch2–IN B
Driver ch2 input, gain adjustment pin
20
ch3–IN B
Driver ch3 input, gain adjustment pin
24
ch4–IN B
Driver ch4 input, gain adjustment pin
5
Tr– B
10
4
19
9
25
20
Ph
as
ed
O
4
3
10kΩ
10kΩ
10µA
2.5V
24
Connect to external transistor base
VCC
15kΩ
40kΩ
5
6kΩ
6
VREG –OUT
Constant voltage output, connects to
VCC
external transistor collector
10µA
3kΩ
3kΩ
10kΩ
6
2.5V
10kΩ
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Terminal Explanations
Pin No.
Pin Name
7
MUTE
Function
Internal equivalent circuit
Driver mute control input
7
50kΩ
50kΩ
GND
13
Substrate
28
GND
GND
GND
8
Substrate GND
Substrate GND
13
ts
8
14
OP–OUT
Operational amplifier output
du
c
28
Pr
o
VCC
75Ω
14
O
ut
75Ω
OP–IN(–)
Operational amplifier negative input
16
OP–IN(+)
Operational amplifier positive input
21
VCC
Ph
as
ed
15
VCC
15
10µA
16
VCC
22
VCC
21
22
23
BIAS–IN
Bias amplifier input
VCC
23
50µA
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Absolute Maximam Ratings
(Ta=25°C)
Item
Symbol
Rating
Unit
Storage temperature
TSTG
–55 ~ +150
°C
Supply voltage
VCC max.
13.5
V
Power dissipations
Pd
1.7 *1
W
*1 Use base condition:100x100mm, t=1.6mm, copper leaf 50%, glass epoxy mounting.
Derating is done at 13.6mW/°C for operation above Ta=25°C
Recommended Operating Conditions
Symbol
Rating
Unit
Operating temperature
TOPR
–35 ~ +85
°C
Operational voltage
VOPR
2.0 ~ 9.0 *2
V
ts
Item
Pr
o
Electrical Characteristics
du
c
*2 Driver section can operate as low as 5.5V.
(Vcc=8V, Ta=25°C, f=1kHz, unless otherwise specified)
Item
Symbol
Test Conditions
Quiescent current
ICC
Output voltage offset
VOO
Output voltage "H"
VOHD
Output voltage "L"
VOLD
Gain (Close circuit)
GVC
VIN=0.1Vrms, f=1kHz
Ripple rejection
RR
VIN=0.1Vrms, f=100Hz
60
dB
Slew rate
SR
VOUT=3Vp–p square wave, f=100kHz
2.0
V/µs
Mute-off voltage
VMOFF
Ph
as
ed
O
ut
No load
Min. Typ. Max. Unit
5.5
8.0
–40
5.2
7.0
10.5
mA
40
mV
5.6
V
1.3
1.55
V
8.0
9.0
dB
2.0
V
5V regulator
Output voltage
VREG
IL=100mA
4.75
5.00
5.25
V
Output load variation
VRL
IL=0 ~ 200mA
–50
0
10
mV
Power supply voltage variation
VVCC
VCC=6 ~ 9V (IL=100mA)
–10
0
25
mV
–2
0
2
mV
20
300
nA
Operational Amplifier
Offset voltage
VOFOP
Input bias current
IBOP
"H" level output voltage
VOHOP
"L" level output voltage
VOLOP
Output drive current (sink)
ISINK
50Ω, at VCC
10
50
mA
Output drive current (source)
ISOURCE
50Ω, at ground
10
30
mA
Voltage gain (open circuit)
GVO
VIN=75dBV, f=1kHz
78
dB
Slew rate
SROP
VOUT=4Vp–p square wave, f=100kHz
1
V/µs
Ripple rejection
RROP
VIN=–20dBV, f=100kHz
65
dB
Common mode rejection ratio
CMRR
VIN=–20dBV, f=1kHz
84
dB
6.0
V
1.8
70
V
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Measuring Circuit
SW3
8Ω
V
2
10µF/25V
SW7
1
ch1-OUT A
GND 28
(sub)
2
ch1-OUTB
ch4-OUT A 27
3
ch1-IN A
4
ch1-IN B
ch4-OUT B
SW6
V
8Ω
26
1
to Vcc
AC-IN1
2
ch4-IN A 25
SW10
DC-IN1
2SB1237
5
Tr-B
ch4-IN B
1
10µF/25V
24
AC-IN4
DC-IN4
IL
6
Vreg-out
7
MUTE
BIAS-IN 23
2.5V
Vcc 22
SW1
100µF/25V
VCC
OFF
ts
V
2
1
du
c
RIPPLE IN
SW2
ON
VCC
GND
2
9
DC-IN2
AC-IN2
8Ω
V
10 ch2-IN A
ch3-IN B 20
ch3-IN A
11 ch2-OUT B
12 ch2-OUT A
Ph
as
ed
SW4
8Ω
V
10kΩ
OP-IN(–) 15
10kΩ
SW12
V
10kΩ
50kΩ
SW13 10kΩ SW16
1
2
1MΩ
SW17
3
SW14
1MΩ
50kΩ
10µF/25V
VOP-IN
10kΩ
10kΩ
1000µF/25V
VCC
470µF/25V
SHORT
GVO
AC-IN3
SW11
14 OP-OUT
A
SW18
10µF/25V
DC-IN3
17
OP-IN(+) 16
(sub)
50Ω
1
SW5
ch3-OUT A
100µF/25V
2
SW9
19
ch3-OUT B 18
13 GND
VCC
1
2
3
ch2-IN B
SW8
ut
1
O
10µF/25V
0.1µF
Vcc 21
Pr
o
8
A
SW15
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Application Circuit
SPINDLE
BIAS
FOCUS
AMP
SLED
PRE
TRACKING
SERVO
SLED
MOTOR
TRACKING
ACT
to VCC
27
26
25
24
23
22
21
20
19
18
17
16
15
13
14
du
c
28
ts
M
FOCUS
ACT
3
4
5
6
8
7
ut
2
MUTE
2SB1237
to Vcc
O
1
Pr
o
M M 1 4 6 9 X H
ON-LOW
OFF-HIGH
9
10
11
12
M
SPINDLE
MOTOR
Ph
as
ed
22µF
5V REGULATOR OUT
Precautions for use
(1) A thermal shut down circuit is built. When the temperature of the chip reaches 175ºC typ., the output
current is muted.
(2) If the mute (7PIN) voltage is open or is less than 0.5V, the output current is muted. Under normal operating
conditions, make sure to pull pin (7PIN) above 2.0V.
(3) If the bias pin (23PIN) drops below 1.4V, the output current is muted. Make sure that under normal
operating conditions, this pin is at 1.6V or above.
(4) If the power supply voltage drops below 4.5V typ., the drivers are turned OFF. When the voltage exceeds
4.7V typ., the drivers return to their previous state.
(5) The channel 4 output is muted in the event of a thermal shut down, mute on, bias pin voltage drop.Other
sections are not muted. When muted, the internal bias voltage of the output pin becomes (roughly (VCC-VF)/2).
(6) The built-in input resistance has a positive temperature coefficient of 1500ppm/ºC. When changing the
gain using an external resistance, the gain will change as the temperature of the resister changes. When
using the built-in input resistance, there are virtually no gain variation due to temperature.
(7) Make sure to connect a 0.47µF capacitor to the IC input to filter out voltage ripple.
(8) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect these to
the external GND.
(9) The capacitor connected between the regulator output (6PIN) and the GND also serves to stop oscillation
of the IC circuit. Consequently, make sure to use one with good temperature characteristics.
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Characteristics
Input Voltage – Output Voltage(1) Driver Circuit(RL=8Ω)
VCC
9V
8V
7V
6V
4
2
VO (V)
Output voltage
6
0
VCC
-2
6V
7V
8V
9V
-4
-6
-4
-2
0
2
4
Input voltage VIN (V)
Input Voltage – Output Voltage(2) Driver Circuit(VCC=8V)
RL
∞
16Ω
8Ω
4Ω
ts
4
du
c
2
0
RL
4Ω
8Ω
16Ω
∞
-2
-4
-6
-4
Pr
o
VO (V)
Output voltage
6
-2
0
2
4
Input voltage VIN (V)
ut
30
O
20
10
0
-10
Ph
as
ed
VOO (mV)
Output Offset voltage
Supply Voltage – Output Offset Voltage Driver Circuit
-20
-30
4
6
8
10
12
14
Supply voltage VCC (V)
Output Load Variaion 5V Regulator
IL=100mA
5.05
VREG (V)
Output voltage
5.10
5.00
4.95
4.90
-0.1
0
0.1
0.2
Load Current IL (A)
0.3
0.4
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Characteristics
6
4
2
0
-2
-4
-6
-4
-2
0
2
VO (V)
Input Voltage – Output Voltage(2) Driver Circuit
Output voltage
VO (V)
Output voltage
Input Voltage – Output Voltage(1) Driver Circuit
4
6
4
2
0
-2
-4
-6
-4
-2
Input voltage VIN (V)
30
20
10
0
-10
-20
-30
10
12
ts
4.95
4.90
-0.1
14
0
0.1
0.2
0.3
4
Pr
o
Load Current IL (mA)
Temperature – Voltage 5V Regulator
Supply Voltage – Output Voltage Op Amp
ut
O
5.05
5.00
-25
0
25
50
75
100
Ph
as
ed
4.95
-50
Temperature Ta (ºC)
Supply Voltage – Output Voltage Op Amp
100
80
60
40
20
0
0
5
10
Supply voltage VCC (V)
15
VOHOP VOLOP (V)
15
5.10
Vreg (V)
5.00
du
c
8
5.05
Vreg (V)
Output voltage
6
Supply voltage VCC (V)
Output voltage
4
5.10
4
ISINK ISOURCE (mA)
2
Output Load Variation 5V Regulator
Output voltage
OFFSET VOO (mA)
Output Offset voltage
Supply Voltage – Output Offset Voltage Driver Circuit
Output Current
0
Input voltage VIN (V)
10
5
0
0
5
10
Supply voltage VCC (V)
15
4-ch BTL Motor Driver for CD Players MM1469
MITSUMI
Characteristics
Temperature – Voltage 5V Regulator
5.10
5.05
VREG (V)
Output voltage
IL=100mA
5.00
4.95
-50
-25
0
25
50
75
100
Temperature Ta (ºC)
du
c
VOH
10
5
VOL
Pr
o
VOHOP VOLOP (V)
Output voltage
15
ts
Supply Voltage – Output Voltage Op Amp
0
0
5
10
15
ut
Supply voltage VCC (ºC)
O
Supply Voltage – Output Voltage Op Amp
ISINK ISOURCE (mA)
Output Current
Ph
as
ed
100
Sink
80
60
40
Source
20
0
0
5
Supply voltage VCC (V)
10
15