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Part Name
Description
TDA5345HT View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA5345HT
5 V spindle & VCM driver combo
Philips Electronics
TDA5345HT Datasheet PDF : 44 Pages
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Philips Semiconductors
5 V spindle & VCM driver combo
Preliminary specification
TDA5345HT
MechClock
Speed Loop
(FLL/PLL)
(digital)
CLOCK
SpinDigOut
commutation
manager
(digital)
SpinCompens
SpinSpeedFilter
Charge
Pumps
Bemf
Comp
SpinCenterTap
SpinMotA
Start-Up
current
limiter
Spindle
drivers
SpinMotB
SpinMotC
SEN_N
SDATA
SCLK
BrakePower
Serial
interface
(digital)
RetReset
RegSense
3.3V
RegNPNBase
Regulator
Reg3v3PwrUp
PowerFault
reference
generator
PorN
PorCap
Por5Adj
Power On Reset
Thermal
monitor
6-bit
DAC
12-bit
DAC
3-step
Retract
& spindle
brake
Shock
sensor
amplifier
VcmCompensIn
+
+
VcmDacOut
VcmInput
VcmCompensOut
Vcm
VcmMinus
AB class
drivers
VcmPlus
Vcm
back-EMF
Amplifier
VcmBemf
OpAmpInM
OpAmpOut
Vcm
Current sense VcmSenseInM
Amplifier
VcmSenseInP
Negative
supply
regulator
Neg3V
PumpNeg3V
ShockInput
ShockFiltOut
Fig.1
TempMux ShockFiltOut
ShockCompOut
GENERAL BLOCK DIAGRAM
1999 June 10
4
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