ICs for Compact Disc/CD-ROM Player
1
AN8746SA
PWM driver IC for portable CD player
n Overview
The AN8746SA is a 4-channel actuator/motor
drive IC by DMOS direct PWM method for a
portable CD player.
n Features
• R
ON
= 1.8 W (typ.)
• Supply voltage range
(Control block: 2.0 V to 3.6 V, power block: 1.2 V
to 3.6 V)
• Current at standby
(Control block: 1 m A or less, power block: 1 m A or
less)
• With an output pin of monitoring 1/2 of the power
supply voltage
n Applications
• Portable CD player
SSOP032-P-0300
Unit: mm
n Block Diagram
116
(0.5)
(0.625)
32
11.0±0.3
6.1±0.3
0.65±0.10
0.65±0.10
0.1±0.1
1.5±0.2
8.1±0.3
17
0.65 0.3
+0.10
–0.05
0.2
+0.10 –0.05
Seating plane
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Reset
TSD
VBG
V
M1
monitor
Logic circuit
Logic circuit
Pre-
driver
Pre-
driver
Pre-
driver
Pre-
driver
V
G
limiter
H
bridge
H
bridge
H
bridge
H
bridge
V
M4
AC PC Fi4 Ri4 Ro4 PGND4 Fo
4
Fo
3
PGND3 Ro3 Ri3 Fi3 V
GI
V
GO
V
M3
V
M1
V
C
MON
Fi1
Ri1
Ro1
PGND1
Fo
1
Fo
2
PGND2
Ro2
Ri2
Fi2
GND
N.C. V
M2
Logic circuit
Logic circuit