TDA5341 Datasheet, PDF(4/28 Page) NXP Semiconductors – Brushless DC motor and VCM drive circuit with speed control

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TDA5341 Datasheet, PDF (4/28 Pages) NXP Semiconductors – Brushless DC motor and VCM drive circuit with speed control

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Philips Semiconductors

Brushless DC motor and VCM drive circuit

with speed control

Product speciï¬cation

TDA5341

PINNING

SYMBOL

CAPST

CAPTI

CLAMP1

AMPOUT

AMPINâ

AMPIN+

MOT0

MOT2

FREDENA

BRAKE

TESTIN

TP1

VEE1

GAINSEL

VDD

VEE

CAPCDM

CAPCDS

PRESET

MOT3

CAPCPC

ILIM

CNTRL

VDD1

CLAMP2

CAPCP

FB1

FB2

RETRACT

VEE3

FILTER

VCMIN1

VCMIN2

DPULSE

Vref

VCM+

DATA

CLOCK

VDD3

1997 Jul 10

DESCRIPTION

external capacitor for starting oscillator

external capacitor for timer circuit

external capacitor used to park the heads; must be externally connected to CLAMP2

uncommitted operational ampliï¬er output

uncommitted operational ampliï¬er invert input

uncommitted operational ampliï¬er direct input

motor centre tap input

motor driver output 2

friction reduction mode enable input (active HIGH)

10 frequency generator (tacho) output

11 brake input command (active LOW)

12 test input for power output switch-off (active HIGH)

13 test purpose 1 (should be left open-circuit)

14 ground for the spindle motor drivers

15 VCM gain adjustment input (switch ON when GAINSEL is LOW)

16 general power supply

17 general ground

18 external capacitor for adaptive commutation delay (master)

19 external capacitor for adaptive commutation delay (slave)

20 set the motor drivers into a ï¬xed state: MOT1 = F (ï¬oating), MOT2 = L, MOT3 = H

21 motor driver output 3

22 frequency compensation of the current control

23 current limit control input

24 motor control

25 power supply 1 for the spindle motor drivers

26 external capacitor used to park the heads; must be externally connected to CLAMP1

27 external capacitor for the charge pump output

28 output of the VCM preampliï¬ers

29 switchable output of the VCM preampliï¬er

30 park input command (active LOW)

31 ground 3 for the actuator driver

32 charge pump output to be connected to an external ï¬lter

33 VCM voltage control input

34 switchable VCM voltage control input

35 data pulse input of the frequency comparator of the speed control

36 voltage reference input

37 positive output of the VCM ampliï¬er

38 input data of the serial port (active HIGH)

39 clock input signal to shift DATA into SERIALIN register (active HIGH)

40 power supply 3 for the actuator driver

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