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PDF SA5664 Data sheet ( Hoja de datos )
| Número de pieza | SA5664 | |
| Descripción | 3-PHASE SPINDLE MOTOR DRIVER | |
| Fabricantes | Silan Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SA5664 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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SA5664
3-PHASE SPINDLE MOTOR DRIVER FOR CD-ROM
DESCRIPTION
The SA5664 is a CD-ROM spindle motor driver supporting reverse-
rotation preventing circuit. It incorporates power save circuit, thermal shut
down circuit, FG output, hall bias, etc. The 3-phase full-wave pseudo linear
driving system achieves high-performance and multi-function.
FEATURES
* 3 -phase, full-wave, pseudo linear driving system.
* Built-in power save in stop mode.
* Built-in current limiter.
* Built-in 3X and 1X hall FG output.
* Built-in TSD (thermal shutdown) circuit.
* Built-in gain switch pin.
* Built-in hall bias circuit.
* Built-in rotational direction detector.
* Built-in short-brake.
* Built-in reverse rotation prevented circuit.
* Built-in brake mode pin.
* Corresponds to 3.3V DSP.
HSOP-28-375-0.8
ORDERING INFORMATION
Device
SA5664
Package
HSOP-28-375-0.8
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.08.09
Page 1 of 12
1 page  
SA5664
FUNCTION DESCRIPTIONS
(1) Input-output table
Input condition
Pin no.
9 10 11 12 13
H1+ H1- H2+ H2- H3+
Condition1 L M H M M
Condition2 H M L M M
Condition3 M M L M H
Condition4 M M H M L
Condition5 H M M M L
Condition6 L M M M H
Caution1: regular EC<ECR, reverse EC>ECR
Input voltage: H=2.6 V, M=2.5 V , L=2.4 V
14
H3-
M
M
M
M
M
M
Output
Regular
Reverse
74 2 74 2
A1 A2 A3 A1 A2 A3
HL L LH H
LH H HL L
LH L HL H
HL H LH L
L L H HH L
LHH LL H
Test
point
7 pin HI
7pin low
4 pin HI
4pin low
2pin HI
2pin low
(2) Torque voltage range, gain switch
Fig.1
l By amplifying the voltage difference between Ec and ECR from servo IC, the torque sense amp produces
the input (VAMP) for the current sense amp.
l The output current (Io) is converted into the voltage (VNF) through the sense resistor (RNF) and compared
with the VAMP. By the negative feedback loop the sensed output voltage, VNF is equal to the input VAMP.
Therefore, the output current (Io) is linearly controlled by the input VAMP.
l As a result, the signals Ec and ECR can control the velocity of Motor by controlling the output current (Io) of
the driver.
l The range of the torque voltage is shown Fig.2
Fig.2
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.08.09
Page 5 of 12
5 Page 
PACKAGE OUTLINE
HSOP-28-375-0.8
SA5664
UNIT: mm
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.08.09
Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SA5664.PDF ] | |
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