SA5810 Datasheet, PDF (4/8 Pages) Silan Microelectronics Joint-stock – 5CHANNAL CD/DVD MOTOR DRIVER WITH POWER DOWN CONTROL

SA5810
(Continued)
Pin No
Pin name
I/O
Pin Description
10
VOL +
O
Loading driver positive output
11
VO2 -
O
Driver channel 2 negative output
12
VO2 +
O
Driver channel 2 positive output
13
VO1 -
O
Driver channel 1 negative output
14
VO1 +
O
Driver channel 1 positive output
15
VO4 +
O
Driver channel 4 positive output
16
VO4 -
O
Driver channel 4 negative output
17
VO3 +
O
Driver channel 3 positive output
18
VO3 -
O
Driver channel 3 negative output
19
GND
I/O Ground
20
POWVCC34
I/O POWVCC (ch3 and ch4)
21
MUTE
I
Mute control pin
22
OPOUT3
I/O Channel 3 pre-amplifier output pin
23
OPIN3 -
I
Channel 3 pre-amplifier inverse input
24
OPIN3 +
I
Channel 3 pre-amplifier non-inverse input
25
OPOUT4
I/O Channel 4 pre-amplifier output pin
26
OPIN4 -
I
Channel 4 pre-amplifier inverse input
27
OPIN4 +
I
Channel 4 pre-amplifier non-inverse input
28
BIAS
I
Bias input pin
Note: Positive output and negative output are the polarities with respect to the input. (For example, if pin5 voltage
is high, then pin 14 voltages become high.)
FUNCTION DESCRIPTION
1) This IC has a built in thermal shutdown circuit that mutes the output current when the chip temperature
reaches 175(°C (typ.). The hysteresis is set to 25 (°C (typ.), so the driver circuits start up again when the chip
temperature falls to 150(°C (typ.).
2) The driver buffer is switched off when the supply voltage falls below 3.8V (typ.), and is switched back on
when the voltage reaches 4.0V (typ.) again.
3) Bias pin (pin28) should be pulled up to more than 1.1V. In case the bias pin voltage is pulled down below
0.7V (Typ), the output current is muted.
4) Mute is applied when the mute pin voltage falls below 0.5V (typ.). Normally, operate with this pin at 1.5V at
least.
5) If the power supply is too low, the internal thermal shutdown circuit will mute the driver. When the mute on,
and bias voltage is low, BTL driver (except loading driver) will mute, but the pre-amplifier will not mute at
anytime. When muting occurs, the output voltage of BTL driver is POWVCC/2V.
6) Loading driver input logic truth table
FWD (1pin)
REV (2pin)
VOL+ (10pin)
VOL- (9pin)
Function
L
L
OPEN
OPEN
Open
L
H
H
L
REV
H
L
L
H
FWD
H
H
L
L
Play
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.1 2006.09.11
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