TDF5140 datasheet(2/19 Pages) PHILIPS

2 / 19 page

1999 March 15

Philips Semiconductors

Product speciﬁcation

Brushless DC motor drive circuit

TDF5140A

FEATURES

• Full-wave commutation (using push/pull drivers at the

output stages) without position sensors

• Built-in start-up circuitry

• Three push-pull outputs:

– 0.8 A output current (typ.)

– low saturation voltage

– built-in current limiter

• Thermal protection

• Flyback diodes

• Tacho output without extra sensor

• Position pulse stage for phase-locked-loop control

• Transconductance amplifier for an external control

transistor.

APPLICATIONS

• VCR

• Laser beam printer

• Fax machine

• Blower

• Automotive.

GENERAL DESCRIPTION

The TDF5140A is a bipolar integrated circuit used to drive

3-phase brushless DC motors in full-wave mode. The

device is sensorless (saving of 3 hall-sensors) using the

back-EMF sensing technique to sense the rotor position.

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

Notes

1. An unstabilized supply can be used.

2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA.

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

note 1

−

VVMOT

input voltage to the output

driver stages

note 2

1.7

−

VDO

drop-out output voltage

IO = 100 mA

−

0.93

1.05

ILIM

current limiting

VVMOT = 10 V; RO = 3.9 Ω

0.7

0.8

EXTENDED TYPE NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TDF5140A

DIL

plastic

SOT102

TDF5140 Datasheet(PDF) 2 Page - NXP Semiconductors

TDF5140 Datasheet(HTML) 2 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Datasheet Download

Link URL