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TDA5149G Datasheet, PDF (4/28 Pages) NXP Semiconductors – 12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip | |||
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Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
Product speciï¬cation
TDA5149G
handbook, full pagewidth
Ccomp Rcomp
VCM
input
from the
serial port
Rin2
Rin1
VCMIN2 40
from the
POR circuit
VGAINSEL
VCM_CONT1
PARK
VCM_CONT2 CIRCUITRY
brake
park
disable
VCMIN1 41
VCMref
â
PREAMP
+
FOLLOWER
VCM
reference
input
Rfb
50
VCMSENSOUT 46
VCMref
Vref(o) 49
+12 v
R
R*
â
PREAMP
+
TDA5149G
BUFFER
FOLLOWER
50 kâ¦
â
SENSE
+
50 kâ¦
Iref 17
+12 V
POR12ADJ 29
+5 V
POR5ADJ 28
REFERENCE
CURRENT
GENERATOR
REFERENCE
VOLTAGE
GENERATOR
â
COMP
+
+
COMP
â
LATCH
CIRCUITRY
LACTIVE LHOLD
from the
serial port
TEMPERATURE
SENSOR
POWER-
ON RESET
GENERATOR
â
OPAMP
+
30 AMPINâ
31 AMPIN+
33 AMPOUT
38 CLAMP
32 PGND1
from the
spindel
36 VCMâ
20 kâ¦
39 VDDV
23 kâ¦
44 VCM+
M
R8
27 â¦
100 nF
48 PGND2
10 kâ¦
10 kâ¦
43
VCMSENSEL
42
VCMSENSEH
+5 V
+12 V
53 LATCHACTIV
latch
52
LATCHHOLD
37 TEMPMON
to the
PARK
circuit
27 â¦
100 nF
26
PORDELAY
35
RESETA
34
RESETP
MGE656
Fig.2 Block diagram of the VCM and RESET circuits.
1996 May 06
4
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