99W139A
4-Channel BTL driver
BA5994FM
Description
The BA5994FM is a 4-channel BTL driver for an
actuator and motor driver of CD/CD-ROM. (Inputs for
the driver connect to an operational amplifier and it is
compatible with various applications.)
Channel 2&3 include a short-brake function.
Dimension
(Units:mm)
Features
1) 4-channel BTL driver
2) Wide dynamic range (4V typical at PreVcc=12V,
PowVcc=5V, RL=8Ω
)
3) Built-in thermal shut down circuit
4) Separating Vcc into Pre and Power (Power divides into
Channel1&2 and Channel 3&4) makes for improved
power efficiency, by a lower supply voltage drive
5) Mute operated individually with Channel 4 and Channel 1&2&3
6) All channels are mute in standby mode
7) Suitable for low operation voltage DSP by wide dynamic range
pre operational amplifier.
8) Built-in short-brake circuit (Channel 2&3)
HSOP-M28
Applications
CD, CD-ROM
Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Supply voltage
Power dissipation
Output current
Operating temperature range
Storage temperature rang
Symbol
PREVcc, POWVcc
Pd
I
OMAX
Topr
Tstg
Limits
13.5
2.2
1
-35 ~
-55 ~
*1
*2
Unit
V
W
A
˚C
˚C
+85
+150
*1
On less than 3% (percentage occupied by copper foil), 70mm
70mm, t=1.6mm, glass epoxy mounting.
Derating: 17.6mW/˚C for operation above Ta=25˚C
*2
The output current must not exceed the maximum ASO.
January, 2000
Recommended Operating Conditions
(Ta=25 ˚C)
Parameter
Supply voltage
Symbol
PREV
CC
POWV
CC
Min.
4.5
4.5
Typ.
-
-
Max.
13.2
PREV
CC
Unit
V
V
Electrical characteristics
(Unless otherwise noted, Ta=25 ˚C, PreVcc=12V, PowVcc1=5V, PowVcc2=5V, V
BIAS
=1.65, V
RL
=8W)
Parameter
Quiescent current
All Channel Standby Current
<Driver block>
Output offset voltage
Maximum output voltage 1
Maximum output voltage 2
Closed loop voltage gain 1
Closed loop voltage gain 2
<Pre operational amplifier>
Input offset voltage
Input bias current
High level output voltage
Low level output voltage
Output sink current
Output source current
VOFOP
VBOP
VOHOP
VOLOP
ISI
ISO
6
-
9
-
1
300
0
-
11
-
-
500
6
300
-
0.3
-
-
mV
nA
V
V
mA
V
BIAS
=6V
V
BIAS
=6V
Output to PreVcc by 50W,V
BIAS
=6V
VOOF
VOM1
VOM2
GVC1
GVC2
70
3.6
7.5
10
16
0
4.0
9
12
18
70
-
-
14
20
mV
V
V
dB
dB
CH1, 2 VIN=V
BIAS
CH3, 4 VIN=V
BIAS
1.65V
1.65V
*
Symbol
IQ
IQST3
Min.
-
-
Typ.
20
-
Max.
30
1
Unit
mA
mA
No load
No load (Pre circuit current)
Conditions
CH1, 2 VIN=V
BIAS
0.5V
CH3, 4 VIN=V
BIAS
0.5V
*
m
A
Output to GND by 50W,V
BIAS
=6V
This product is not designed for protection against radioactive rays.
*
PowVcc1=PowVcc2=12V
10k
Application circuit
15
10k
10k
10k
LEVEL
SHIFT
Tray motor
LEVEL
SHIFT
M
14
focus coil
10k
10k
10k
10k
16
10k
17
10k
10k
10k
Sled motor
LEVEL
SHIFT
LEVEL
SHIFT
M
12
13
tracking coil
10k
Vcc 10k
18
STANDBY
Vcc 10k
12V(for ch3,4)
10k
11
0.1mF
0.1mF
H=ENABLE
L=STANDBY
STANDBY
CH1,2,3
H=ENABLE
L=STANDBY
CH4
20
21
22
20k
10k
10k
23
10k
24
25
10k
20k
10k
26
10k
27
Vcc
28
0.1mF
SB1
SB2
1
2
3
4
5
6
7
8
9
DIGITAL SERVO
TRACKING
SLED
FOCUS
BIAS
5V(for ch1,2)
19
10
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