AN8488SB Datasheet, PDF (1/8 Pages) Panasonic Semiconductor – 3-phase full-wave motor driver and DC motor BTL driver IC

ICs for Compact Disc/ CD-ROM Player
AN8488SB
3-phase full-wave motor driver and DC motor BTL driver IC
s Overview
The AN8488SB is a motor driver IC incorporat-
ing a 3-phase full-wave motor driver and DC motor
BTL driver IC with a reverse rotation brake/short
brake changeover function. It is encapsulated into a
high allowable power dissipation package (with cop-
per block).
s Features
• 3-phase full-wave and snubberless
• FG output
• Current limit
• Reverse rotation prevention
• Thermal protection circuit built-in
s Applications
• Various types of optical disk drive
42
1
(1.20)
18.4±0.2
(10.00)
(1.95)
34
30
22
9
13
21
(3.20)
0.80
0.35^{+–00..1005}
Seating plane
HSOP042-P-0400C
Unit: mm
(1.315)
0° to 10°
0.5±0.2
s Block Diagram
16
H1+
H1− ¹⁷
H2+ ^{18 Hall}
amp.
H2− ^{19 matrix}
Direction
changeover
H3+ ²⁰
H3− ²¹
VH ²³
Direction
detection
Detection _ER
Hall
Logic
bias
EP = ER × EA
Upper side
distribution
Lower side
distribution
Amp.
Amp.
EC ²⁷
ECR ²⁶
EA
Absolute
value
Start/stop
VTL
Thermal
protection
circuit
Upper
side
power
Lower
side
power
1
2
VM2
FG
Brake _comparator
circuit
V_CC2
det.
Reset
V_REF
det.
1