TDF5242 datasheet(11/20 Pages) PHILIPS

11 / 20 page

1997 Sep 12

Philips Semiconductors

Preliminary speciﬁcation

Brushless DC motor drive circuit

TDF5242T

AMP OUT (open collector)

Isink

output sink current

−−

Vsat

saturation voltage

II =40mA

−

1.5

2.1

output voltage

−0.5

−

+18

slew rate

RL = 330 Ω; CL =50pF

−−

mA/

µs

gm(tr)

transfer gain

0.3

−−

DIR

VIL

LOW level input voltage (reverse

rotation)

reverse mode;

4V<VP <18V

−−

2.3

VIH

HIGH level input voltage (normal

rotation)

normal mode;

4V<VP <18V

2.7

−−

IIL

LOW level input current (reverse

rotation)

reverse mode;

Tamb =25 °C

−−20

−µA

IIH

HIGH level input current (normal

rotation)

normal mode;

Tamb =25 °C

−

−µA

BRAKE

VBM

brake-mode voltage

enable brake mode;

4V<VP <18V

−−

2.3

normal mode;

4V<VP <18V

2.7

−−

input current

brake mode; Tamb =25 °C

−−20

−30

µA

normal mode;

Tamb =25 °C

−

020

µA

FG (push-pull)

VOL

LOW level output voltage

IO = 1.6 mA

−−

0.4

VOH

HIGH level output voltage

IO = −60 µA

−

VP − 0.3 −

tTHL

HIGH-to-LOW transition time

Tamb =25 °C;

CL = 50 pF; RL =10kΩ

−

0.5

−µs

ratio of FG frequency and

commutation frequency

Tamb =25 °C

−

CAP-ST

Isink

output sink current

1.5

2.0

2.5

µA

Isource

output source current

−2.5

−2.0

−1.5

µA

VSWL

LOW level switching voltage

Tamb =25 °C

−

0.20

−

VSWH

HIGH level switching voltage

Tamb =25 °C

−

2.20

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

comm

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