TDA5149G Datasheet, PDF (5/28 Pages) NXP Semiconductors – 12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip

Philips Semiconductors
12 V Voice Coil Motor (VCM) driver and
spindle motor pre-driver combination chip
Product specification
TDA5149G
PINNING
SYMBOL
PIN
I/O
DESCRIPTION
CAPY
1
I/O charge pump capacitor
MOT0
2
I motor centre tap input
H1
3
O driver output to gate of upper power FET 1
MOT1
4
I back EMF comparator input 1
L1
5
O driver output to gate of lower power FET 1
H2
6
O driver output to gate of upper power FET 2
MOT2
7
I back EMF comparator input 2
L2
8
O driver output to gate of lower power FET 2
H3
9
O driver output to gate of upper power FET 3
MOT3
10
I back EMF comparator input 3
L3
11
O driver output to gate of lower power FET 3
IDRIVE
12
I adjustment for output stage drive current
SPINSENSEH
13
I positive spindle sense amplifier input
SPINSENSEL
14
I negative spindle sense amplifier input
SISENS
15
O spindle sense amplifier output
AGND
I_ref
SINTIN
16
− general analog ground; note 1
17
O reference current generator output
18
I negative integrator input
ISPIN
19
I positive integrator input, average current adjustment
SICOMP
20
O integrator output
RPOS
21
I duty cycle modulator input
CSS1
22
I/O soft switching capacitor 1
CSS2
23
I/O soft switching capacitor 2
STOSC
24
I/O sawtooth oscillator capacitor
SCANOUT
25
O test output
POR_DELAY
V_DDA1
POR5_ADJ
POR12_ADJ
AMPIN−
26
I/O power-on reset delay capacitor (active LOW)
27
− analog supply voltage 1 (+5 V)
28
O adjustment of POR threshold (for +5 V)
29
O adjustment of POR threshold (for +12 V)
30
I negative input of the uncommitted operational amplifier
AMPIN+
31
I positive input of the uncommitted operational amplifier
PGND1
AMPOUT
32
− power ground 1 for VCM DMOS; note 1
33
O uncommitted operational amplifier output
RESETP
34
O power-on reset digital output with passive pull-up resistor
RESETA
35
O power-on reset digital output with active pull-up resistor
V_CM−
TEMPMON
36
O negative output voltage of the VCM power stage
37
O temperature monitor output
CLAMP
38
I/O clamp capacitor used for head retraction
V_DDV
V_CMIN2
39
− power supply for VCM DMOS driver (+12 V)
40
I switchable VCM control input voltage
1996 May 06
5