1999 March 15

4

Philips Semiconductors

Product specification

Brushless DC motor drive circuit

TDF5140A

PINNING

SYMBOL

PIN

DIL18

DESCRIPTION

MOT1

1

driver output 1

TEST

2

test input/output

MOT2

3

driver output 2

VMOT

4

input voltage for the output driver stages

PG IN

5

position generator: input from the position detector sensor to the position

detector stage (optional); only if an external position coil is used

PG/FG

6

position generator/frequency generator: output of the rotation speed and position

detector stages (open collector digital output, negative-going edge is valid)

GND2

7

ground supply return for control circuits

8

positive supply voltage

CAP-CD

9

external capacitor connection for adaptive communication delay timing

CAP-DC

10

external capacitor connection for adaptive communication delay timing copy

CAP-ST

11

external capacitor connection for start-up oscillator

CAP-TI

12

external capacitor connection for timing

+AMP IN

13

non-inverting input of the transconductance amplifier

−AMP IN

14

inverting input of the transconductance amplifier

AMP OUT

15

transconductance amplifier output (open collector)

MOT3

16

driver output 3

MOT0

17

input from the star point of the motor coils

GND1

18

ground (0 V) motor supply return for output stages