Transcript
ICs for CD/CD-ROM Player
AN8377N 3-channel Linear Driver ■ Overview
Unit : mm
(maximum drive current : 500mA) Stable circuit operation against supply voltage change and temperature change due to the built-in stabilized power supply • Built-in +5V low drop power supply (external PNP power transistor) • Built-in reset circuit (reset voltage : 4.82V) • Built-in thermal protective circuit (operating temperature : 159 ; typ.) • Built-in power cut circuit (motor driver 1 only)
17
1 5±0 1
17
•
0 5±0 1
16 15 14 13 12 11 10 9
0 560 1
3 80±0 3
ø2.1
+ 0.1
0 ~ 6˚
0.45 – 0.05
7.62±0.25
16-Lead DIP Package with Fin (HDIP016-P-0300)
■ Applications Linear driving of the DC motors and actuators of the CD players, CD radio cassette tape recorder, and so on.
■ Block Diagram
15
13
14
BTL Motor Driver 1
RST Thermal Shutdown
9
10
BTL Motor Driver 3
11
12
BTL Motor Driver 2
5V Regulator (low–sat)
3
4
–
16
Error Amp +
5
–
Error Amp +
7
100kW
Band– gap (2 5V)
100kW
2
100kW
1
VCC
3 05±0 25 1 06±0 25
1 2±0 25
1 2 3 4 5 6 7 8
4 70 25
2.54 2.54
27 4±0 3
■ Features • Operating supply voltage range ; VCC=5.5V to 18V • Built-in 3 circuits of voltage BTL drivers
21 6±0 3
6 35±0 3
5 08±0 1
The AN8377N is an IC which incorporates 3 circuits of BTL drivers for driving various DC motors such as actuators (focus, tracking, traverse), spindles, and loading of the CD players, and the +5V low drop type power supply.
–
P VCC
F GND Error Amp +
6
8 VREF (1⁄2VCC)
ICs for CD/CD-ROM Player
AN8377N ■ Absolute Maximum Ratings (Ta=25˚C) Parameter
Symbol
Rating
VCC
20
Supply Voltage
Unit V
Power Dissipation
PD
1500
Operating Ambient Temperature
Topr
–25 ~ +80
C
Storage Temperature
Tstg
–55 ~ +150
C
mW
■ Recommended Operating Range (Ta=25˚C) Parameter
Symbol
Range
Operating Supply Voltage Range
VCC
5.5V ~ 16V
■ Electrical Characteristics (Ta=25˚C) Parameter
Symbol
Condition
min.
typ.
max.
Unit
7
10.5
15
VCC=12V, RL=50W
4.75
5
5.25
V
DVRI
VCC=12V, RL=50W ~ 25W
–15
30
mV
DVRVC
VCC=15.5V ~ 5.5V , RL=50W
–15
50
mV
No Load Current
ICC
VCC=12V
5V Regulator Output Voltage
VRO
5V Regulator Load Change 5V Regulator Input Change
mA
Reset Threshold Voltage
VRST
4.55
4.82
5.1
V
Reset Threshold Hysteresis Width
VHYS
90
170
310
mV
Reset Operating Minimum Voltage
VR (min.)
Input Offset Voltage
VIOF
Output Offset Voltage
VOOF
Minimum VCC Voltage at which V15=Low VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW VCC=18V, RL=20W, RIN=10kW
V
3.1 –7
7
mV
–50
50
mV
22.5
dB
– 0.85
0.85
dB
7.1
10.9
V
–10.9
–7.1
V
–10
30
mV
1.2
V
Gain (+)
G+
(+) (–) Relative Gain
GR
Limit Voltage (+)
VL+
Limit Voltage (–)
VL–
Dead Zone Width
VDZ
PC Input Threshold (L)
VPCL
VCC=18V
PC Input Threshold (H)
VPCH
VCC=18V
2.8
Motor Driver 2 Output Voltage at Reset
V2RS
VCC=3.5V, RL=10kW
–50
50
mV
Motor Driver 3 Output Voltage at Reset
V3RS
VCC=3.5V, RL=10kW
–50
50
mV
Motor Driver 1 Output Voltage at Reset
V1RS
VCC=3.5V, RL=10kW
–50
50
mV
5V Regulator External Transistor Base Current Limit Value
I3LIM
16
mA
Thermal Protective Circuit Operating Temperature Balancing Value
TTHD
159
C
Thermal Protective Circuit Operating Temperature Hysteresis Width
DTTHD
64
C
16.5
9
20
V
12
Note) The specified values of VIOF, VOOF, G+, GR, VL+, VL– , and VDZ are common ones for each of the motor driver 1, motor driver 2, and motor driver 3 circuits.
ICs for CD/CD-ROM Player
AN8377N
■ Application Circuit (Used when driving the focus, tracking actuator, and traverse motor) from MN6622 or MN6625
+5V M
20kW 16
15
14
13
12
11
10
9
AN8377N
1
2
3
4
5
F
6
7
8
A1547 PVCC
VCC Motor Driver 3
+ 22mF
Motor Driver 2
5V
Motor Driver 1
(shot circuit possible)
VREF (typ 2 5V)
■ Pin Descriptions (The following description applies when the 3 channels for the motor drivers 1, 2, and 3 are used.) Pin No.
Symbol
I/O
DC Voltage (VCC/12V)
Equivalent Circuit
Description
1 1
PVCC
I
12V
2
VCC
I
12V
3
TB
O
11.3V
Power VCC pin. Supplies a current flowing to the output power transistor.
33
VCC pin. Not connected to the power VCC pin.
2
3
External PNP transistor base connection pin
4 10kW
10kW
4
VMON
I
5V
External PNP transistor collector connection pin (=5V output pin)
ICs for CD/CD-ROM Player
AN8377N
■ Pin Descriptions (Cont.) (The following description applies when the 3 channels for the motor drivers 1, 2, and 3 are used.) DC Voltage (VCC/12V)
Pin No.
Symbol
I/O
Equivalent Circuit
Description
15
RST
O
F
GND
I
0V
8
VREF
I
2.5V
5
TVDI
I
2.5V
6
FDI
I
2.5V
7
TDI
I
2.5V
9
TD –
O
(0.3V)
10
TD+
O
(0.3V)
BTL driver 3 non-inverting output pin
11
FD –
O
(0.3V)
BTL driver 2 inverting output pin
12
FD+
O
(0.3V)
BTL driver 2 non-inverting output pin
13
TVD –
O
(0V)
15 Reset output pin. Open collector output type.
200W
F
GND pin
VREF input pin
8
Driver 1 error input pin 5
Driver 2 error input pin
500W
or
6
14
TVD+
O
or
Driver 3 error input pin
7 (P VCC)
BTL driver 3 inverting output pin
(0V)
9
10
or
or
11
12
or
or
13
14
BTL driver 1 inverting output pin BTL driver 1 non-inverting output pin
16
16
PC
I
0V
PC (power cut) input pin
