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PDF AN8488SB Data sheet ( Hoja de datos )
| Número de pieza | AN8488SB | |
| Descripción | 3-phase full-wave motor driver and DC motor BTL driver IC | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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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
VCC2
det.
Reset
VREF
det.
1
1 page  
ICs for Compact Disc/ CD-ROM Player
AN8488SB
s Usage Notes
1. Use the VCC2 at VCC2 ≥ VM2 . And use power supply always at on state. Otherwise it will cause malfunction.
2. On driver gain setting of driver block.
Voltage gain of power amplifier: 23 dB
10 kΩ
10 kΩ
11
500 Ω
×7 4
M Load
Input Input pin
5.5 kΩ
×7 7
Power amp. Output pin
VREF
VREF
3. On operation mode of mute:
H
PC
L (Open)
Driver output
Active
Mute
4. On SS pin mode:
Spindle block
Driver block
H
On
On
SS
M L (Open)
Off Off
On Off
5. On brake mode of spindle block:
BRK
H
L (Open)
EC < ECR
Acceleration
Acceleration
EC > ECR Reverse rotation brake
Short brake
6. Take time to check the characteristics on use.
When changing an external circuit constant for use, consider not only static characteristics, but also transient charac-
teristics and external parts with respect to the characteristics difference among ICs so that you can get enough margin.
7. Avoid short-circuit between output pin and power supply, output pin and GND (line-to-supply and line-to-ground
fault) and output pins (load short-circuit). Otherwise the IC will be damaged and is likely to get fired.
8. Be cautious on a dip soldering. Prior study is required.
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AN8488SB.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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