TDA5345HT Datasheet, PDF (5/44 Pages) NXP Semiconductors – 5 V spindle & VCM driver combo

Philips Semiconductors
5 V spindle & VCM driver combo
Preliminary specification
TDA5345HT
PINNING (GREY ROWS MEANS NEW PINS))
SYMBOL
SpinVddA
SpinRectBemf
SpinMotA
VcmVddM
SpinGndAB
VcmMinus
n.c.1
SpinMotB
VcmGndPow
SpinVddBC
VcmPlus
n.c.2
SpinMotC
VcmVddP
SpinGndC
GNDAna1
VcmCompensOut
VcmRef
VcmCompensIn
VcmInput
VcmVdd5Div2
VcmSenseInM
VcmSenseInP
Vdd5Ana1
PorN
PorCap
BdGap
Por5Adj
VcmBemf
OpAmpInM
OpAmpOut
GNDAna2
RefCurRes
Reg3v3PwrUp
PumpNeg3 V
Neg3 V
PowerFault
CLOCK
SDATA
Vdd5Dig
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
DESCRIPTION
spindle MotA half bridge power supply
spindle “Clamp”: rectified Bemf
spindle power output: A
VCM- half bridge power supply
spindle MotA & MotB half bridges ground
VCM inverted power output (VCM-)
not connected ; connect it to ground
spindle power output: B
VCM H-bridge ground
spindle MotC & MotB half bridges power supply
VCM non-inverted power output
not connected; connect it to ground
spindle power output: C
VCM+ half bridge power supply
spindle MotC half bridge ground
analog ground
VCM error amplifier output
VCM loop reference voltage (1.5 V)
VCM error amplifier inverted input
VCM loop input
internal Vdd5/2 reference voltage for the VCM
VCM sense amplifier inverted input
VCM sense amplifier non-inverted input
analog power supply
power On Reset output
external capacitor used to set the Power On Reset delay
internal band-gap reference voltage (for production trimming)
5 V power on reset threshold adjustment
VCM Back-Emf amplifier output
VCM Back Emf Operational Amplifier inverted input
VCM Back Emf Operational Amplifier output
analog ground
external 33 kΩ resistor
hardware enable / disable for the 3.3 V regulator (at Power Up)
-3 V regulator pump capacitor
-3 V regulator output sense pin
battery low warning
digital timing clock
serial port Data line
digital power supply
1999 June 10
5
I/O
I
O
O
SUPPLY
GROUND
O
GROUND
O
GROUND
I
O
GROUND
O
SUPPLY
GROUND
GROUND
O
O
I
I
I/O
I
I
SUPPLY
O
O
I
I
O
I
O
GROUND
O
I
O
I
O
I
I
SUPPLY