TDF5140 datasheet(7/19 Pages) PHILIPS

7 / 19 page

1999 March 15

Philips Semiconductors

Product speciﬁcation

Brushless DC motor drive circuit

TDF5140A

CHARACTERISTICS

VP = 14.5 V; Tamb =25 °C; unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

supply voltage

note 1

−

supply current

note 2

−

3.7

VVMOT

input voltage to the output driver

stages

see Fig.1

1.7

−

Thermal protection

TSD

local temperature at

temperature sensor causing

shut-down

130

140

150

°C

∆T

reduction in temperature before

switch-on

after shut-down

−

TSD − 30 −

MOT0; centre tap

input voltage

−0.5

−

VVMOT

input bias current

0.5 V

< VI < VVMOT − 1.5 V −10

−

µA

VCSW

comparator switching level

note 3

±20

±30

±40

∆VCSW

variation in comparator

switching levels

−3

Vhys

comparator input hysteresis

−

−µV

MOT1, MOT2 and MOT3

VDO

drop-out output voltage

IO = 100 mA

−

0.93

1.05

IO = 500 mA

−

1.65

1.80

∆VOL

variation in saturation voltage

between lower transistors

IO = 100 mA

−−

180

∆VOH

variation in saturation voltage

between upper transistors

IO = −100 mA

−−

180

ILIM

current limiting

VVMOT = 10 V; RO = 6.8 Ω 0.7

0.8

VDHF

diode forward voltage (diode DH)IO = −500 mA; notes 4

and 5; see Fig.1

−−

1.5

VDLF

diode forward voltage (diode DL)IO = 500 mA; notes 4 and

5; see Fig.1

−1.5

−−

IDM

peak diode current

note 5

−−

+AMP IN and

−AMP IN

input voltage

−0.3

−

VP − 1.7

differential mode voltage without

'latch-up'

−−

±VP

input bias current

−−

650

input capacitance

−

Voffset

input offset voltage

−−

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