BH6573FV
Optical disc ICs
PWM driver for CD
BH6573FV
BH6573FV is a 4-channel PWM driver developed for driving stepping motor, and DC motor of DSC, and also developed
for driving DC motor, and actuator of CD / MD.
This IC has achieved lower power consumption of the set by using power MOSFET in output.
!
Applications
CD, MD, DSC, DVC
!
Features
1) Four channels of power MOS-H bridges are contained.
2) Available for PWM input.
3) Applicable for stepping-motor drive.
4) Separating VM into CH1, CH2 and CH3 / 4.
5) Low on-resistance 1.3Ω (typ.)
6) Low power consumption.
7) SSOP-B24 package.
!
Absolute maximum ratings
(Ta=25°C)
Parameter
H-bridge power supply voltage
Control circuit power supply voltage
Driver output current
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
M
V
DD
I
O
Pd
Topr
Tstg
Limits
6
6
1000
1025
∗1
∗2
Unit
V
V
mA
mW
°C
°C
−40~+85
−55~+150
∗1
The current is guaranteed 1.0A is case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum
on-time of 5msec.
∗2
When a 70mm×70mm, 1.6mm thick glass epoxy substrate having a copper foil content of less than 3% is mounted.
When the circuit if used at Ta of 25°C or more, subtract 8.2mW per degree from the rating.
!
Recommended operating conditions
Parameter
H-bridge power supply voltage
Control circuit power supply voltage
Symbol
V
M
V
DD
Min.
1.6
2.0
Typ.
5.0
3.0
Max.
5.5
5.5
Unit
V
V
1/8
BH6573FV
Optical disc ICs
!
Block diagram
24
23
22
21
20
19
18
17
16
15
14
13
PSB1
PSB2
INTERFACE
H BRIDGE
(Pow MOS)
H BRIDGE
(Pow MOS)
INTERFACE
PREDRIVE
PREDRIVE
PREDRIVE
H BRIDGE
(Pow MOS)
H BRIDGE
(Pow MOS)
PREDRIVE
INTERFACE
INTERFACE
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
!
Pin descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Pin name
GND
IN1R
IN1F
OUT1F
VM1
OUT1R
OUT2R
VM2
OUT2F
IN2F
IN2R
V
DD
GND
CH1 Reverse input
CH1 Forward input
CH1 Forward output
Power supply for CH1 power block
CH1 Reverse output
CH2 Reverse output
Power supply for CH2 power block
CH2 Forward output
CH2 Forward input
CH2 Reverse input
Power supply for pre block
Functions
Pin No.
13
14
15
16
17
18
19
20
21
22
23
24
Pin name
GND
IN4R
IN4F
OUT4F
OUT4R
VM3
OUT3R
OUT3F
IN3F
IN3R
PSB2
PSB1
GND
CH4 Reverse input
CH4 Forward input
CH4 Forward output
CH4 Reverse output
Power supply for CH3, 4 power block
CH3 Reverse output
CH3 Forward output
CH3 Forward input
CH3 Reverse input
CH3, 4 power save control pin
CH1, 2 power save control pin
Functions
2/8
BH6573FV
Optical disc ICs
!
Electrical characteristics
(unless otherwise noted, Ta=25°C, V
M
=5V, V
DD
=3V, f
IN
=176kHz, RL=8Ω-47uH)
Parameter
Symbol
Min.
−
−
−
V
DD
−0.4
−
−
−1
−
−
−
−
220
Typ.
Max.
Unit
µA
µA
µA
Drivimg 4channels
Conditions
Measuring
circuit
Fig.1
<H-bridge power supply voltage>
Upon no signal
IMST
200
350
<Control circuit power supply voltage>
Upon no signal
Upon operation
<Logic input character>
"H" level input voltage
"L" level input voltage
"H" level input current
"L" level input current
Output in-resistance 1
Output in-resistance 2
Propagation delay time
Minimum input pulse width
V
IH
V
IL
I
IH
I
IL
R
ON
R
ON
tRISE
tFALL
t
MIN
−
−
−
−
1.3
1.8
0.2
0.2
−
−
0.3
1
−
2.0
2.6
1
1
−
V
V
µA
µA
Ω
Ω
usec
usec
nsec
Output pulse more than 1/2tMIN
Sum of on-resistance of top and that of bottom (V
M
=5V, V
DD
=3V)
Sum of on-resistance of top and that of bottom (V
M
=2.5V, V
DD
=3V)
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
I
DD
1
I
DD
2
0
6
1
70
Fig.1
Fig.1
This product is not designed for protection against radioactive rays.
4/8
BH6573FV
Optical disc ICs
!
Measuring circuit
H
L
H
L
H
L
H
L
8Ω
47µH
8Ω
47µH
H
L
H
L
VO3
VO4
A
IIN3R
A
IIN3F
V
V
A
IIN4F
A
IIN4R
24
PSB1
23
PSB2
22
21
20
19
18
17
16
15
14
13
INTERFACE
H BRIDGE
(Pow MOS)
H BRIDGE
(Pow MOS)
INTERFACE
PREDRIVE
PREDRIVE
PREDRIVE
H BRIDGE
(Pow MOS)
H BRIDGE
(Pow MOS)
PREDRIVE
INTERFACE
INTERFACE
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
A
IIN1R
IIN1F
A
V
VO2
V
VO1
IIN2F
A
IIN2R
A
8Ω
H
L
H
L
47µH
8Ω
47µH
H
L
H
L
A
I
DD
V
DD
A
IMST
VM
Fig.1
!
Circuit operation
Truth table
PSB1∗
H
H
H
H
L
∗
PSB mode
PSB1
H
H
L
L
PSB2
H
L
H
L
OUT1, 2
Output is followed by truth table
Output is followed by truth table
Hi-Z
Hi-Z
OUT3, 4
Output is followed by truth table
Hi-Z
Output is followed by truth table
Hi-Z
PSB2∗
H
H
H
H
L
IN1∼4F
L
L
H
H
X
IN1∼4R
L
H
L
H
X
OUT1∼4F
Hi-Z
L
H
L
Hi-Z
OUT1∼4R
Hi-Z
H
L
L
Hi-Z
5/8
京公网安备 11010802033920号
EEWORLD
