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TDA5149 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. TDA5149
Description  12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 4 page
background image
1996 May 06
4
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
TDA5149G
Fig.2 Block diagram of the VCM and RESET circuits.
handbook, full pagewidth
MGE656
M
FOLLOWER
FOLLOWER
PREAMP
PREAMP
PARK
CIRCUITRY
SENSE
BUFFER
REFERENCE
CURRENT
GENERATOR
REFERENCE
VOLTAGE
GENERATOR
LATCH
CIRCUITRY
LACTIVE
LHOLD
from the
serial port
TEMPERATURE
SENSOR
POWER-
ON RESET
GENERATOR
OPAMP
to the
PARK
circuit
COMP
COMP
+5 V
+12 V
+12 v
from the
serial port
from the
POR circuit
Ccomp R
comp
VCMIN2
VCMIN1
Rfb
VCMSENSOUT
VCMref
Vref(o)
Iref
POR12ADJ
POR5ADJ
VCM_CONT1
VCM_CONT2
AMPIN
AMPIN
+
AMPOUT
CLAMP
PGND1
VDDV
VCM+
VCM−
PGND2
VCMSENSEL
VCMSENSEH
latch
LATCHACTIV
LATCHHOLD
TEMPMON
RESETP
RESETA
PORDELAY
26
35
34
37
52
53
42
48
43
44
39
36
32
38
33
31
30
40
41
50
46
49
17
29
28
100 nF
R8
from the
spindel
27
100 nF
27
Rin2
Rin1
VCM
input
VCM
reference
input
TDA5149G
disable
park
brake
VGAINSEL
VCMref
R
R
*
20 k
23 k
50 k
10 k
10 k
50 k
+
+
+
+
+
+
+5 V
+12 V




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