KA3027D2TF [FAIRCHILD]
4-Channel Motor Driver; 4通道马达驱动器
| 型号： | KA3027D2TF |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 4-Channel Motor Driver |
| 文件： | 总14页 (文件大小：284K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA3027D2
4-Channel Motor Driver
Features
Description
• 3-Channel Balanced TransformerLess(BTL) driver
• 1-Channel forward-Reverse control DC motor driver
• Built-in thermal shutdown circuit
The KA3027D2 is a monolithic IC, suitable for a 1-ch (for-
ward.reverse) control DC motor driver and a 3-ch motor
driver which drives the focus actuator,tracking actuator, and
sled motor of a CD-media system.
• Built-in mute circuit
• Operating supply voltage: 4.5~5.5V
• Corresponds to 3.3V or 5V DSP
28-SSOPH-300
Typical Applications
Ordering Information
• Notebook compact disk ROM (CD-ROM)
• Other portable compact disk media
Device
Package
Operating Temp.
-35 °C ~ 85 °C
-35 °C ~ 85 °C
KA3027D2
28-SSOPH-300
KA3027D2TF 28-SSOPH-300
Rev. 1.0.1
February. 2000.
©2000 Fairchild Semiconductor International
1
KA3027D2
Pin Assignments
FIN
(GND)
27
26
25
24
23
22
21
20
19
18
17
16
15
28
KA3027D2
1
2
3
6
7
4
5
8
9
12
10
11
13
14
FIN
(GND)
2
KA3027D2
Pin Definitions
Pin Number
Pin Name
I/O
-
Pin Function Description
1
V
Signal V
CC
CC
2
DO4-
DO4+
VM3, 4
PGND1
DO3-
O
O
-
Drive4 Output (-)
Drive4 Output (+)
BTL CH3, 4 Power V
3
4
CC
5
-
CH3, 4 Power Ground
Drive3 Output (-)
Drive3 Output (+)
CH4 Mute
6
O
O
-
7
DO3+
MUTE4
VM1,2
DO2-
8
9
-
BTL CH1, 2 Power V
Drive2 Output (-)
Drive2 Output (+)
CC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
O
O
-
DO2+
PGND2
DO1-
CH1,2 Power Ground
Drive1 Output (-)
O
O
I
DO1+
IN1.1
Drive1 Output (+)
OP-AMP CH1 Input (+)
OP-AMP CH1 Input (-)
OP-AMP CH1 Output
OP-AMP CH2 Input (+)
OP-AMP CH2 Input (-)
OP-AMP CH2 Output
OP-AMP CH3 Input
Signal Ground
IN1.2
I
OUT1
IN2.1
O
I
IN2.2
I
OUT2
IN3
O
I
SGND
CTL
-
I
CH4 Motor Speed Control
CH4 Forward
FWD
I
REV
I
CH4 Reverse
REF
I
Bias Voltage Input
CH1, 2 Mute
MUTE1,2
MUTE3
I
I
CH3 Mute
3
KA3027D2
Internal Block Diagram
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+
-
+
+
10K
-
-
10K
10K
+
+
+
-
-
-
10K
20K
10K
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
+
+
+
VM3,4
-
-
-
VM1,2
VM1,2
BTLVM/2
BTLVM/2
10K
BTLVM/2
S W
10K
10K
M S C
+
BTLVM/2
BTLVM/2
10K
BTLVM/2
10K
-
VM3,4
+
+
+
-
-
-
10K
10K
10K
10K
TSD
+
-
+
+
-
-
10K
10K
10K
VM1,2
9
VM3,4
4
MUTE4
8
1
2
3
5
6
7
12
10
11
13
14
4
KA3027D2
Equivalent Circuits
MUTE INPUT
POWER OUTPUT
3
7
2
6
8
50KΩ
50KΩ
11
10
27
28
50Ω
13 14
CH3 LEVEL SHIFT INPUT
SIGNAL REFERENCE INPUT
10KΩ
0.2kΩ
21
26
50Ω
50Ω
ERROR AMP INPUT
LOADING CONTROL INPUT
15
18
16
19
0.2KΩ
23
50Ω
50Ω
50Ω
ERROR AMP OUTPUT
LOADING LOGIC INPUT
17
20
30KΩ
50Ω
24
25
50Ω
30KΩ
5
KA3027D2
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
VCCmax
PD
Value
7
1.4note
Unit
V
Maximum supply voltage
Power dissipation
W
Operating temperature range
Storage temperature range
NOTE:
TOPR
-35 ~ +85
-55 ~ +150
°C
°C
TSTG
1. When mounted on a 76.2mm × 114mm × 1.57mm PCB (Phenolic resin material).
2. Power dissipation reduces 11.2mW/°C for using above Ta = 25°C
3. Do not exceed P and SOA(Safe operating area).
D
Power Dissipation Curve
PD (temporary)
Pd (mW)
2,000
1,200
SOA
400
0
0
25
50
85 100
125
150
175
Ambient Temperature, Ta (°C)
o
Recommended Operating Conditions (Ta = 25 C)
Parameter
Supply Voltage
Symbol
Min
Typ
Max
Unit
VCC
4.5
-
5.5
V
6
KA3027D2
Electrical Characteristics
(Unless otherwise specified, Ta = 25 °C, V
= VM1,2 = VM3,4 = 5V)
CC
Parameter
Quiescent Current
Symbol
ICC
Conditions
Min.
Typ. Max. Units
Vin = 0V
-
-
8
1
-
12
3
mA
mA
V
CH Mute On Current
CH Mute On Voltage
CH Mute Off Voltage
DRIVE CIRCUIT
IMUTEch
VMONch
Pin27, Pin28, Pin8 = GND
Pin27, Pin28, Pin8 = Variation
-
0.5
-
VMOFFch Pin27, Pin28, Pin8 = Variation
2
-
V
Input Offset Voltage
VIO
VOO
VOM1
VOM2
GVC1
GVC2
RR
-
-20
-40
2.7
3
-
+20
mV
mV
V
Output Offset Voltage
Maximum Output Voltage1
Maximum Output Voltage2
Closed Loop Voltage Gain1
Closed Loop Voltage Gain2
Ripple Rejection Ratio
Slew Rate
VIN = 2.5V
-
+40
RL = 8Ω (CH1, 2)
3.4
3.8
12
18
60
0.8
-
RL = 24Ω (CH3)
-
13.5
20
-
V
f = 1kHz, Vin = 0.1VRMS (CH1, 2)
f = 1kHz, Vin = 0.1VRMS (CH3)
VIN = 0.1VRMS, f = 120Hz
VO = 2VP-P, f = 120kHz
10.5
16
-
dB
dB
dB
V/us
SR
-
-
ERROR OP AMP CIRCUIT
Input Offset Voltage
VOFOP
IBOP
-
-7
-
-
+7
mV
nA
V
Input Bias Current
-
-
300
High Level Output Voltage
Low Level Output Voltage
Output Sink Current
VOHOP
VOLOP
ISINK
-
4.5
4.8
0.2
4
-
-
-
0.5
V
RL = 1KΩ
2
-
mA
mA
dB
dB
V/us
dB
V
Output Source Current
Open Loop Voltage Gain
Ripple Rejection Ratio
Slew Rate
ISOURCE RL = 1KΩ
2
4
-
GVO
RROP
SROP
CMRR
VICM
VIN = -75dB, f = 1kHz
-
75
65
1
-
VIN = -20dB, f = 120Hz
f = 120kHz, 2Vp-p
VIN = -20dB, f = 1kHz
-
-
-
-
-
-
Common Mode Rejection Ratio
Common Mode Input Range
80
-
-
-0.3
4.5
TRAY DRIVE CIRCUIT(V
Input High Level Voltage
Input Low Level Voltage
Output Voltage
= VM3,4 = 5V, RL = 45Ω)
CC
VIH
VIL
-
-
2
-
-
-
-
V
V
0.5
4.2
700
+10
+10
VO
VCTL = 3.5V
2.8
-
3.5
300
-
V
Output Load Regulation
Output Offset Voltage1
Output Offset Voltage2
∆VRL
VOO1
VOO2
-
mV
mV
mV
VIN = 5V, 5V
VIN = 0V, 0V
-10
-10
-
7
KA3027D2
Application Information
1. REFERENCE INPUT
Pin 26 (REF) is a reference Input pin.
1) Reference Input
The applied voltage at the reference input pin must be between 1.5 (V) and 3.5 (V), when Vcc = 5V.
2. SEPARATED CHANNEL MUTE FUNCTION
These pins are used for individual channel mute operation.
1) When the mute pins (pin27, 28 and 8) are Low level, the mute circuits are enabled and the output circuits are muted.
2) When the voltages of the mute pins (pin27, 28 and 8) are High level, the mute circuits are disabled and the output circuits
operate normally.
3) If the chip temperature rises above 175 °C, then the thermal shutdown (TSD) circuit is activated and the output circuits are
muted.
Mute1, 2 (pin 27)-CH1, 2 mute control input pin.
Mute3 (pin 28)-CH3 mute control input pin. Mute4(pin8) - CH4 mute control input pin.
3. PROTECTION FUNCTION
Thermal Shutdown (TSD)
1) If the chip temperature rises above 175 °C the thermal shutdown (TSD) circuit is activated and the output circuit is in the
Mute state, that is Off state.
The TSD circuit has a temperature hysteresis of 25 °C.
4. FOCUS, TRACKING ACTUATOR, SLED MOTOR DRIVE
CIRCUIT
M
Power Amp
1) The reference voltage REF is given externally through pin 26.
R4
R4
AP3
AP2
- +
-
+
2) The error amp output signal is amplified by R2/R1 and then fed to the
level shift circuit.
Vr
R3
R3
-
+
3) The level shift circuit produces the differential output voltages and drives
the two output power amplifiers.
LEVEL
SNIFT
Since the differential gain of the output amplifiers is equal to 2 × (1+ R4/
R3), the output signal of the error amp is amplified by (R2/R1) × 2 ×
(1+R4/R3).
AP1
R2
+
-
26
+
-
R1
Vref
17 20 21
16 19
4) If the total gain is insufficient, the input error amp can be used to increase
the gain.
EA
Error Amp
+
-
Vin
15 18
5) The bias voltage (Vr) is about a half of the supply voltage(VM).
8
KA3027D2
5. TRAY MOTOR DRIVE CIRCUIT
1) Rotational Direction Control
3
2
DO4+
DO4-
M
- The forward and reverse rotational direction is controlled by FWD (pin
24) and REV (pin 25) inputs. Conditions are as follows.
- Vr(Power reference voltage) is (VM34-VBE) / 2
D
D
LEVEL SHIFT
M. S. C
Input
Output
CTL
23
FWD
REV
H
DO4+
Vr
DO4-
Vr
State
Brake
S. W
H
H
L
IN
IN
L
H
L
Forward
Reverse
Brake
FWD
24
REV
25
H
L
H
L
L
Vr
Vr
2) Motor Speed Control
- The motor speed is proportional to the differential voltage between the pin3(DO4+) and the pin2(DO4-).
- By applying the voltage to the pin23 of CTL, the motor speed can be controlled and it is linearly proportional to the
applied control voltage.
- When both VM3,4 and Vcc are 5V, and the applied control voltage is higher than 4V, the motor speed is not proportional
to the control voltage but the motor speed becomes constant.
- If the pin23 is opened, the motor torque becomes maximum.
- The maximum output swing is 3.8V, when VM3,4 and Vcc are 5V.
9
KA3027D2
Typical Performance Characteristics
< V & I
CC
>
< V
& V >
OM
CC
CC
VOM (V)
ICC (mA)
16
14
14
12
10
8
12
10
8
CH1
CH2
CH3
6
6
Ta=25℃
4
4
VCC=VM12=VM34
RL1=8ohm (CH1,2)
RL2=24ohm(CH3)
Ta=25℃
VCC=VM12=VM34
2
2
0
4
0
2
6
8
10
12
14
VCC (V)
5
8
11
14
VCC (V)
< I & VOUT >
OM
< V
& G >
VC
CC
GVC (dB)
VOUT (V)
4.5
20
18
16
14
12
10
8
4
3.5
3
CH1 Upp.
CH1 Low
CH2 Upp.
CH2 Low
CH3 Upp.
CH3 Low
2.5
2
CH1
CH2
CH3
1.5
1
Ta=25℃
VCC=VM12=VM34
6
Ta=25℃
VCC=VM12=VM34
RL1=8ohm (CH1,2)
RL2=24ohm(CH3)
4
0.5
0
2
0
3
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
5
7
9
11
13
15
17
19
VCC (V)
IOM (A)
< V
CC
& I
(ERROR AMP) >
< V
& I
(ERROR AMP) >
Isource (mA)
source
CC
sink
Isink (mA)
7
16
14
12
10
8
6
5
4
3
2
1
CH1
CH2
CH1
CH2
6
4
Ta=25℃
RL=1Kohm
Ta=25℃
RL=1Kohm
2
0
4
0
4
6
8
10
12
14
6
8
10
12
14
VCC (V)
VCC (V)
10
KA3027D2
Typical Performance Characteristics (Continued)
< CTL & OUTPUT VTG (TRAY PART) >
< I
load
& V (LOAD REGULATION (TRAY PART) )>
O
VO (V)
VO (V)
8
12
DO4+
DO4-
7
6
5
4
3
2
1
10
8
6
4
Ta=25℃
Ta=25℃
VCC=13V
RL=24ohm
VCC=8V, CTL=3.5V
2
FWD=5V, REV=0V → DO4+
FWD=0V, REV=5V → DO4-
FWD=5V, REV=0V
0
0
0
0.2
0.4
0.6
0.8
1
0
2
4
6
8
10
12
CTL (V)
Iload (A)
< TEMP & G
>
< TEMP & OUTPUT VTG (TRAY PART) >
VC
GVC (dB)
VO (V)
21
10
9
8
7
6
5
4
3
2
1
0
18
15
12
9
VO1
VO2
CH1
CH2
CH3
6
VCC=VM12=VM34=5V
RL1=8ohm (CH1,2)
RL2=24ohm(CH3)
VCC=VM34=8V CTL=6.8V → VO1
VCC=VM34=13V CTL=9.5V → VO2
RL=24ohm
3
0
- 40
- 20
0
20
40
60
80
100
- 40
- 20
0
20
40
60
80
100
TEMP (℃)
TEMP (℃)
11
KA3027D2
Typical Application Circuits 1
(Differential PWM Control Mode)
SLED MUTE
VCC
1
2
MUTE3 28
VCC
DO4-
MUTE1,2 27
FOCUS, TRACKING MUTE
TRAY MOTOR
3
4
5
6
7
REF
REV
FWD
26
25
24
23
22
DO4+
VM3,4
PGND1
DO3-
BIAS VOLTAGE
CONTROL
(TRAY)
5V
FORWARD
REVERSE
CTL
5V
SLED MOTOR
DO3+
SGND
KA3027D2
TRAY MUTE
8
9
MUTE4
21
20
19
IN3
OUT2
IN2.2
VM1,2
DO2-
5V
10
SLED
TRACKING
ACTUATOR
11 DO2+
12 PGND2
13 DO1-
IN2.1 18
OUT1 17
IN1.2 16
IN1.1 15
PWM2
PWM1
TRACKING
PWM2
PWM1
FOCUS
FOCUS
ACTUATOR
SERVO AMP
14
DO1+
Thermal Shut Down Circuit
The IC over heats above 175°C and fails when overload condition continues for a long time. So, KA3027D2 has a thermal shut
down circuit to prevent this conditon.
12
KA3027D2
Typical Application Circuits 2
(Voltage Control Mode)
SLED MUTE
VCC
1
2
MUTE3 28
VCC
DO4-
MUTE1,2 27
FOCUS, TRACKING MUTE
TRAY MOTOR
3
4
5
6
7
REF
REV
FWD
26
25
24
23
22
BIAS VOLTAGE
CONTROL
DO4+
VM3,4
PGND1
DO3-
(TRAY)
5V
FORWARD
REVERSE
CTL
5V
SLED MOTOR
DO3+
SGND
KA3027D2
TRAY MUTE
8
9
MUTE4
IN3 21
VM1,2
DO2-
20
19
OUT2
IN2.2
5V
10
TRACKING
ACTUATOR
11 DO2+
12 PGND2
13 DO1-
IN2.1 18
OUT1 17
SLED
TRACKING
FOCUS
IN1.2
16
FOCUS
ACTUATOR
SERVO AMP
14
DO1+
IN1.1 15
F
R E
13
KA3027D2
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
12/1/00 0.0m 001
Stock#DSxxxxxxxx
2000 Fairchild Semiconductor International
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