ICs for Compact Disc/CD-ROM Player
AN8497SA
3-channel linear input PWM driver IC
s
Overview
The AN8497SA is a PWM output 3-channel
driver IC supporting linear inputs, and best suited for
an actuator and a motor drive for CD-ROM and
DVD-ROM. Due to its linear input, a conventional
system can be used only by replacing a driver. And,
due to an adoption of PWM output, you can reduce
considerably power consumption compared with a
conventional driver. Further a space saving surface
mount package is adopted thanks to its low thermal
generation.
32
11.0±0.3
17
Unit: mm
6.1±0.3
8.1±0.3
0.65±0.10
1
16
0.2
–0.05
1.5±0.2
+0.10
•
Maximum 64% reduction of power consumption
compared with a conventional linear 3-channel
driver IC
•
Free gain setting by an external resistor due to
voltage feedback
•
Standby function available (standby current
<
20 µA)
•
Only for supply voltage 5 V
•
Phase compensation function
(0.625)
0.65
0.3
–0.05
+0.10
Seating plane
0.65±0.10
0.1±0.1
s
Features
(0.5)
SSOP032 P-0300
s
Applications
•
Optical disk drive
VPUMP
s
Block Diagram
PG12
VM3
N.C.
RO2
RO3
BC1
BC2
FO2
SO2
FO3
PG3
SB
CLK
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
Standby
(full circuit)
H
bridge
Pre-
driver
Pre-
driver
H
bridge
V/I
Pre-
driver
Charge pump
Triangular
wave
oscillator
17
TSD
V
REF
detection
detection
H
bridge
V/I
V/I
Logic
Logic
Logic
ABS
ABS
ABS
10
11
12
13
14
15
In3
YC1A
YC2A
SGND
VM12
YC1B
YC2B
SV
DD
FO1
RO1
SO1
FB1
In1
FB2
In2
V
REF
16
1
2
3
4
5
6
7
8
9
FB3
SV
DD
CT
1