ICs for Compact Disc/CD-ROM Player
AN8813NSB
4-channel driver IC for optical disk drive
■ Overview
Unit: mm
18.4±0.2
(5.15)
(4.8)
The AN8813NSB is a 4-channel driver IC of the
BTL method. Ch.1 is used only for the loading
motor with little gain dispersion.
28
22
21
15
+0.10
• For the loading motor channel, there are 4 modes,
that is, forward rotation, reverse rotation, brake
and standby modes, and you can select a mode
among them. The gain of it is fixed to 6 dB (±0.5
dB) with a small dispersion among the products.
• 3.3 V supply voltage is available due to an external PNP-tr.
• Driver I/O gain setting is possible with an additional external resistor
• Since the output and input lines are separated and
respectively collected together, pattern designing
is relatively easy.
0.30–0.05
8.3±0.2
10.93±0.30
(1.315)
■ Features
0° to 10°
1
7
8
14
0.35+0.10
–0.05
(6.4)
(1.2)
0.8
Seating plane
0.1±0.1
2.7±0.2
0.65±0.20
HSOP042-P-0400
■ Applications
• CD/CD-ROM drive
• DVD/DVD-ROM drive
21
PVCC2
9
VO4−
11
VO4+
12
VO3−
13
VO3+
14
VO2−
15
VO2+
16
VO1−
17
VO1+
18
20
PVCC1
■ Block Diagram
1
2 PVCC
8
SVCC
detector
7 SV
CC
1
2 PVCC
22
24
23
Direction
detector
Direction
detector
Direction
detector
Thermal
protection
circuit
Direction
changeover
Fin GND
1
28 V
REF
3.3 V
reg.
6
MC2
5
MC1
10
PGND2
4
IN4
27
IN3
26
IN2
25
IN1
19
Decoder
PGND1
2
1
AN8813NSB
ICs for Compact Disc/CD-ROM Player
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Base control pin for an external transistor
15
Motor driver-2 reverse rotation output pin
of 3.3 V regulator
16
Motor driver-2 forward rotation output pin
2
3.3 V regulator output monitor pin
17
Motor driver-1 reverse rotation output pin
3
N.C. pin
18
Motor driver-1 forward rotation output pin
4
Motor driver-4 input pin
19
Driver GND pin 1 (PGND1)
5
Motor driver-4 control pin 1
20
Driver power supply pin 1 (PVCC1)
6
Motor driver-4 control pin 2
21
1/2 PVCC output pin 1
7
Power supply pin (SVCC)
22
Op-amp. non-inverted input pin
8
1/2 PVCC output pin 2
23
Op-amp. inverted input pin
9
Driver power supply pin 2 (PVCC2)
24
Op-amp. output pin
10
Driver GND pin 2 (PGND2)
25
Motor driver-1 input pin
11
Motor driver-4 reverse rotation output pin
26
Motor driver-2 input pin
12
Motor driver-4 forward rotation output pin
27
Motor driver-3 input pin
13
Motor driver-3 reverse rotation output pin
28
VREF input pin
14
Motor driver-3 forward rotation output pin
Fin
GND pin
■ Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
Power dissipation
*2
Operating ambient temperature
Storage temperature
*1
*1
Symbol
Rating
Unit
SVCC
18
V
ICC
mA
PD
542
mW
Topr
−30 to +85
°C
Tstg
−55 to +150
°C
Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
*2: Ta = 85°C. For the independent IC without a heat sink.
Referring to "■ Application Circuit Example", following the allowable power dissipation characteristic curve of "■
Application Notes".
■ Recommended Operating Range
Parameter
Supply voltage
2
Symbol
Range
Unit
SVCC , PVCC1 , PVCC2
4.5 to 14
V
ICs for Compact Disc/CD-ROM Player
AN8813NSB
■ Electrical Characteristics at Ta = 25°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Current consumption with no load
ITOT
VCC = 8 V, VIN4 = 1 V
5
10
15
mA
Input offset voltage
VIOF
VCC = 8 V, RL1 to RL3 = 8 Ω,
R1 to R3 = 10 kΩ
−10
0
10
mV
Output offset voltage
VOOF
VCC = 8 V, RL1 to RL3 = 8 Ω,
R1 to R3 = 10 kΩ
−50
0
50
mV
G
VCC = 8 V, RL1 to RL3 = 8 Ω,
R1 to R3 = 10 kΩ
18.0
20.0
22.0
dB
Maximum output amplitude (+)
VL+
VCC = 8 V, RL1 to RL3 = 8 Ω,
R1 to R3 = 10 kΩ
4.4
5.0
V
Maximum output amplitude (−)
VL−
VCC = 8 V, RL1 to RL3 = 8 Ω,
R1 to R3 = 10 kΩ
−5.0
−4.4
V
Motor driver 1 to motor driver 3
Gain
Motor driver 4
For loading motor
Input bias current
IIN4
VCC = 8 V, VIN4 = 1 V
150
500
nA
Forward rotation gain
G4+
VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
5.0
5.5
6.0
dB
Reverse rotation gain
G4−
VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
5.0
5.5
6.0
dB
Maximum output amplitude (+)
V4L+
VIN4 = 4 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
4.4
5.0
V
Maximum output amplitude (−)
V4L−
VIN4 = 4 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
−5.0
−4.4
V
IOL(STB) VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
10
µA
Output offset voltage at braking VOF(BRK) VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω, VMC = 5 V
−80
0
80
mV
Output leak current at standby
MC1 pin, MC2 pin
high-level threshold voltage
VMCH
VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω
2.0
V
MC1 pin, MC2 pin
low-level threshold voltage
VMCL
VIN4 = 1 V, VCC = 8 V
RL4 = 8 Ω
0.3
V
VRST
IIN = 10 µA, R1 to R3 = 10 kΩ
3.0
3.2
3.3
V
Output voltage
VREG
VCC = 8 V
3.1
3.3
3.5
V
Output load fluctuation
∆VR
VCC = 8 V
−50
0
50
mV
Supply voltage fluctuation
∆VV
VCC = 8 V to 12 V
−5
0
5
mA
Input offset voltage
VOF
VCC = 8 V
−5
0
5
mV
Input bias current
IBOP
VCC = 8 V
150
500
nA
Reset circuit
Reset operation release supply
voltage
3.3 V regulator
Op-amp.
3
AN8813NSB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
OP-amp. (continued)
High-level output voltage
VOH
VCC = 8 V
6.0
V
Low-level output voltage
VOL
VCC = 8 V
1.7
V
Output driving current sink
ISIN
VCC = 8 V
2.0
mA
Output driving current source
ISOU
VCC = 8 V
2.0
mA
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Thermal protection circuit
Operating temperature
equilibrium value
TTHD
180
°C
Operating temperature
hysteresis width
∆TTHD
45
°C
VIN4
0.5
2.5
V
Motor driver 4
IN4 pin input setting range
■ Usage Notes
1. This IC has no output short-circuit protection circuit and is likely to emit smoke and break down when there is a
short-circuit between output and VCC or output and GND.
2. An appropriate prior study should be done for use of dip soldering.
■ Application Notes
• PD Ta curves of HSOP042-P-0400
PD T a
2.500
2.240
Power dissipation PD (W)
2.000
Mounted on standard board
(glass epoxy:
75 mm × 75 mm × t1.6 mm)
Rth(j-a) = 55.8°C/W
1.500
1.042
1.000
Independent IC
without a heat sink
Rth(j-a) = 119.9°C/W
0.500
0.000
0
25
50
75
100
Ambient temperature Ta (°C)
4
125
150
ICs for Compact Disc/CD-ROM Player
AN8813NSB
■ Application Circuit Example
RL2
22
Fin
21
20
19
18
7
Fin
8
9
10
11
15
23
6
14
24
5
16
25
4
13
PVCC1
R1
26
27
2
R2
RL1
V1
3
28
1
R3
V2
17
V3
12
VREF
5V
SVCC
PVCC2
RL4
RL3
V4
When the AN8813NSB is use, take into account the following cautions and follow the power dissipation characteristic curve.
1. Load current IP1 flowing into load RL1, RL2 is supplied through pin 20.
| V18 −V17 |
| V16 −V15 |
IP1 =
+
RL1
RL2
2. Load current IP2 flowing into load RL3, RL4 is supplied through pin 9.
| V14 −V13 |
| V12 −V11 |
IP2 =
+
RL3
RL4
3. Dissipation increase (∆PD) inside the IC (power output stage) caused by loads RL1, RL2, RL3 and RL4 is as follows:
| V18 −V17 |
| V16 −V15 |
∆PD = (PVCC1 − | V18 −V17 |) ×
+ (PVCC1 − | V16 − V15 |) +
RL1
RL2
| V14 −V13 |
| V12 −V11 |
= (PVCC2 − | V14 −V13 |) ×
+ (PVCC2 − | V12 − V11 |) ×
RL3
RL4
4. Dissipation increase (∆PS) inside the IC (signal block supplied from pin 7) caused by loads RL1, RL2, RL3 and RL4
comes roughly as follows:
V
V
∆PS = 3 × { 1 × (2 × SVCC + | V18 −V17 |) + 2 × (2 × SVCC + | V16 −V15 |)
R2
R1
V3
V4
+
× (2 × SVCC + | V14 −V13 |)} +
× (3 × SVCC + | V12 −V11 |), where R4: Internal resistor 12.3 kΩ
R4
R3
5. Dissipation increase in a driver operating mode is ∆PD + ∆PS .
6. Allowable power dissipation without load (PD1) can be found as follows:
PD1 = SVCC × I(SVCC) +PVCC1 × I(PVCC1) + PVCC2 × I(PVCC2)
7. Allowable power dissipation in a load operating mode (PD) comes roughly as follows:
PD = PD1 + ∆PD + ∆PS
5