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MITSUMI
4-ch BTL Motor Driver for CD Players
4-ch BTL Motor Driver for CD Players
Monolithic IC MM1469
Outline
This IC is a 4-ch BTL driver developed for driving CD player motors and actuators. With built-in 3.3V (MM1469PH) or 5.0V (MM1469XH) regulator and general-purpose op amp, it supports a variety of applications.
Features
(1) External resistor allows gain adjustment. (2) Few external parts. (3) Built-in 3.3V or 5.0V regulator. (Requires external PNP Tr.) (4) Built-in general-purpose op amp. (5) Built-in thermal shutdown circuit.
Package
HSOP-28
Applications
(1) CD radio cassette recorder (2) VCD
Block diagram
(MM1469XH)
T. S. D : Thermal Shut Down D. BUF : Driver Buffer
28
27
26
25
24 1k
23
22 VCC
21 VCC 1k
20
19
18
17
16
15
D.BUF D.BUF 10k 13k Level shift
D.BUF D.BUF 10k 13k Level shift
50k
DRIVER MUTE
T.S.D
10k
10k (3.3k)
50k
Level shift
13k
13k
10k D.BUF D.BUF 1 2 3 4
1k 5 6 7 8
1k 9
10k D.BUF D.BUF 10 11 12 13 14
note Constane in parenehesis is regulator output voltage 3.3V(MM1469PH).
Level shift
MITSUMI
4-ch BTL Motor Driver for CD Players
Pin configuration
ch1 OUT-A ch1 OUT-B ch1 IN-A ch1 IN-B Tr-B VREG-OUT MUTE 1 2 3 4 5 6 7 28 SUBGND 27 ch4 OUT-A 26 ch4 OUT-B 25 ch4 IN-A 24 ch4 IN-B 23 BIAS-IN 22 VCC
GND ch2 IN-B ch2 IN-A ch2 OUT-B ch2 OUT-A SUBGND OP OUT
8 9 10 11 12 13 14
21 VCC 20 ch3 IN-B 19 ch3 IN-A 18 ch3 OUT-B 17 ch3 OUT-A 16 OP IN(+) 15 OP IN()
1 2 3 4 5 6 7 8 9 10 11 12 13 14
ch1 OUTA ch1 OUTB ch1 INA ch1 INB TrB VREG OUT MUTE GND ch2 INB ch2 INA ch2 OUTB ch2 OUTA SUBGND OP OUT
15 16 17 18 19 20 21 22 23 24 25 26 27 28
OP IN() OP IN(+) ch3 OUTA ch3 OUTB ch3 INA ch3 INB VCC VCC BIASIN ch4 INB ch4 INA ch4 OUTB ch4 OUTA SUBGND
MITSUMI
4-ch BTL Motor Driver for CD Players
Terminal explanations
Pin No. 1 12 17 27 Pin Name ch1OUT A ch2OUT A ch3OUT A ch4OUT A Function Driver ch1 negative output Driver ch2 negative output Driver ch3 negative output Driver ch4 negative output
VCC
Internal equivalent circuit
12k 1 2 11 18 26
12k 12 17
2 11 18 26
ch1OUT B ch2OUT B ch3OUT B ch4OUT B
Driver ch1 positive output Driver ch2 positive output Driver ch3 positive output Driver ch4 positive output
600
27
600
3 10 19 25
ch1IN A ch2IN A ch3IN A ch4IN A
Driver ch1 input Driver ch2 input Driver ch3 input Driver ch4 input
10k 3 10k 10k 10µA 2.5V VCC
4 9 20 24
ch1IN B ch2IN B ch3IN B ch4IN B
Driver ch1 input, gain adjustment pin Driver ch2 input, gain adjustment pin Driver ch3 input, gain adjustment pin Driver ch4 input, gain adjustment pin
10 19 25
4 9 20 24
5
Tr B
Connect to external transistor base
VCC 15k 40k 5
6k
6
VREG OUT
Constant voltage output, connects to external transistor collector
VCC 10µA 3k 2.5V 10k 3k 10k 6
MITSUMI
4-ch BTL Motor Driver for CD Players
Terminal Explanations
Pin No. 7 Pin Name MUTE Function Driver mute control input
50k 50k
Internal equivalent circuit
7
8
GND
GND
GND 8
13 28
Substrate GND
Substrate GND
Substrate GND 13 28
14
OPOUT
Operational amplifier output
VCC 75 14 75
15 16
OPIN() OPIN(+)
Operational amplifier negative input Operational amplifier positive input
15
VCC 10µA 16
21 22
VCC
VCC
21 22
VCC
23
BIAS IN
Bias amplifier input
23
VCC
50µA
MITSUMI
4-ch BTL Motor Driver for CD Players
Absolute Maximam Ratings
Item Storage temperature Supply voltage Power dissipations
(Ta=25°C) Symbol TSTG VCC max. Pd Rating 55 ~ +150 13.5 1.7 *1 Unit °C V 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
Item Operating temperature Operational voltage Symbol TOPR VOPR Rating 35 ~ +85 2.0 ~ 9.0 *2 Unit °C V
*2 Driver section can operate as low as 5.5V.
Electrical Characteristics
Item Quiescent current Output voltage offset Output voltage "H" Output voltage "L" Gain (Close circuit) Ripple rejection Slew rate Mute-off voltage 5V regulator Output voltage Output load variation Power supply voltage variation Operational Amplifier Offset voltage Input bias current "H" level output voltage "L" level output voltage Output drive current (sink) Output drive current (source) Voltage gain (open circuit) Slew rate Ripple rejection Common mode rejection ratio
(Vcc=8V, Ta=25°C, f=1kHz, unless otherwise specified) Test Conditions No load Min. Typ. Max. Unit 5.5 40 5.2 VIN=0.1Vrms, f=1kHz VIN=0.1Vrms, f=100Hz VOUT=3Vpp square wave, f=100kHz 2.0 IL=100mA IL=0 ~ 200mA VCC=6 ~ 9V (IL=100mA) 4.75 50 10 2 6.0 1.8 50, at VCC 50, at ground VIN=75dBV, f=1kHz VOUT=4Vpp square wave, f=100kHz VIN=20dBV, f=100kHz VIN=20dBV, f=1kHz 70 10 10 50 30 78 1 65 84 5.00 0 0 0 20 5.25 10 25 2 300 7.0 5.6 1.3 8.0 60 2.0 1.55 9.0 8.0 10.5 40 mA mV V V dB dB V/µS V V mV mV mV nA V V mA mA dB V/µS dB dB
Symbol ICC VOO VOHD VOLD GVC RR SR VMOFF VREG VRL VVCC VOFOP IBOP VOHOP VOLOP ISINK ISOURCE GVO SROP RROP CMRR
MITSUMI
4-ch BTL Motor Driver for CD Players
Measuring Circuit
1
ch1-OUT A ch1-OUTB ch1-IN A ch1-IN B Tr-B Vreg-out MUTE
V
SW3 8
GND 28 (sub) ch4-OUT A 27 ch4-OUT B
26 SW6 8 2 SW10 1 10µF/25V AC-IN4 DC-IN4 2.5V
2 3 4 5 6 7
V
10µF/25V AC-IN1
2 1
SW7 to Vcc
ch4-IN A 25 ch4-IN B
24
DC-IN1 2SB1237
V
IL
BIAS-IN 23 Vcc 22
OFF ON
100µF/25V VCC SW2
SW1 2 RIPPLE IN 1
A
VCC 8 0.1µF 100µF/25V SW9 1 10µF/25V 10 ch2-IN A 11 ch2-OUT B 12 ch2-OUT A 13 GND DC-IN3 AC-IN3 2
GND ch2-IN B
Vcc 21 ch3-IN B 20 ch3-IN A
19
10µF/25V AC-IN2
2 1 9 SW8
DC-IN2
V
8 SW4
ch3-OUT B 18 ch3-OUT A
17
8 SW5 10k SW11 10k SW12 VCC 50k 470µF/25V
V
VCC 1 2 3 50
(sub)
OP-IN(+) 16 OP-IN() 15
A
SW18
14 OP-OUT
V
10k 1M
SHORT SW13 10k SW16 SW17 GVO 10k SW14
1 2 3 50k 10µF/25V VOP-IN
10k
1000µF/25V
1M
SW15
MITSUMI
4-ch BTL Motor Driver for CD Players
Application Circuit
SERVO
TRACKING FOCUS
PRE
AMP
SPINDLE
SLED MOTOR to VCC M
19 18 17
TRACKING ACT
28
27
26
25
24
23
22
21
20
SLED
BIAS
16
15
M M 1 4 6 9 X H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FOCUS ACT
MUTE 2SB1237 to Vcc ON-LOW OFF-HIGH 22µF
M SPINDLE MOTOR
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.
MITSUMI
4-ch BTL Motor Driver for CD Players
Characteristics
Input Voltage Output Voltage(1) Driver Circuit(RL=8)
6 4 2
VO (V)
Output voltage
VCC 9V 8V 7V 6V
0 -2 -4 -6 -4
VCC 6V 7V 8V 9V
-2
0
2
4
Input voltage VIN (V)
Input Voltage Output Voltage(2) Driver Circuit(VCC=8V)
RL
6
Output voltage
4 2
VO (V)
16 8 4
0 -2 -4 -6 -4
RL 4 8 16
-2
0
2
4
Input voltage VIN (V)
Supply Voltage Output Offset Voltage Driver Circuit
Output Offset voltage
30 20 10 0 -10 -20 -30 4 6 8 10 12 14
VOO (mV)
Supply voltage VCC (V)
Output Load Variaion 5V Regulator
5.10 IL=100mA 5.05
VREG (V)
Output voltage
5.00 4.95 4.90 -0.1 0 0.1 0.2 0.3 0.4
Load Current IL (A)
MITSUMI
4-ch BTL Motor Driver for CD Players
Characteristics
Input Voltage Output Voltage(1) Driver Circuit
6 4 2 0 -2 -4 -6 -4 -2 0 2 4
Input Voltage Output Voltage(2) Driver Circuit
6 4 2 0 -2 -4 -6 -4 -2 0 2 4
Output voltage
Output voltage Input voltage VIN (V)
VO (V)
VO (V)
Input voltage VIN (V)
Supply Voltage Output Offset Voltage Driver Circuit
Output Offset voltage
30 20 10 0 -10 -20 -30 4 6 8 10 12 14
Output Load Variation 5V Regulator
5.10
Output voltage
OFFSET VOO (mA)
5.05
Vreg (V)
5.00 4.95 4.90 -0.1 0 0.1 0.2 0.3 4
Supply voltage VCC (V)
Load Current IL (mA)
Temperature Voltage 5V Regulator
5.10
Supply Voltage Output Voltage Op Amp
15
Output voltage
Output voltage
VOHOP VOLOP (V)
Vreg (V)
5.05 5.00 4.95 -50
10 5 0
-25
0
25
50
75
100
0
5
10
15
Temperature Ta (ºC)
Supply voltage VCC (V)
Supply Voltage Output Voltage Op Amp
100
Output Current
ISINK ISOURCE (mA)
80 60 40 20 0 0 5 10 15
Supply voltage VCC (V)
MITSUMI
4-ch BTL Motor Driver for CD Players
Characteristics
Temperature Voltage 5V Regulator
5.10 IL=100mA
Output voltage
5.05
VREG (V)
5.00 4.95 -50 -25 0 25 50 75 100
Temperature Ta (ºC)
Supply Voltage Output Voltage Op Amp
15
Output voltage
VOH
VOHOP VOLOP (V)
10 5 VOL 0 0 5 10 15
Supply voltage VCC (ºC)
Supply Voltage Output Voltage Op Amp
100
Output Current
ISINK ISOURCE (mA)
80 60 40 20 0 0 5 10
Sink
Source
15
Supply voltage VCC (V)