TDA5145TS datasheet(6/20 Pages) PHILIPS

6 / 20 page

1998 Oct 27

Philips Semiconductors

Product speciﬁcation

Brushless DC motor drive circuit

TDA5145TS

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

−

6.8

7.8

Vi(VMOT)

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

Ibias

input bias current

0.5 V < Vi <VVMOT − 1.5 V −10

−−µA

VCSW

comparator switching level

note 3

±20

±25

±30

∆VCSW

variation in comparator switching

levels

−−

3mV

Vhys

comparator input hysteresis

−

−µV

MOT1, MOT2 and MOT3; see Fig.4

VDO

drop-out output voltage

Io = 100 mA

−

0.9

1.05

Io = 1000 mA

−

1.6

1.85

∆V

sat(lt)

variation in saturation voltage

between lower transistors

Io = 100 mA

−−

180

∆Vsat(ut)

variation in saturation voltage

between upper transistors

Io = −100 mA

−−

180

ILIM

current limiting

VVMOT =10V; Ro = 1.2 Ω

1.8

2.0

2.5

rise time switching output

VVMOT = 15 V; see Fig.5

µs

fall time switching output

VVMOT = 15 V; see Fig.5

µs

VdF(DH)

diode forward voltage (diode DH)Io = −500 mA;

notes 4 and 5; see Fig.1

−−

1.5

VdF(DL)

diode forward voltage (diode DL)Io = 500 mA;

notes 4 and 5; see Fig.1

−1.5

−−

IdM

peak diode current

note 5

−−

2.5

DIR

VIH

HIGH-level input voltage

4V<VP < 18 V

2.0

−−

VIL

LOW-level input voltage

4V<VP <18V

−−

0.8

IIL

LOW-level input current

−−20

−µA

IIH

HIGH-level input current

−

−µA

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