drive circuit. TDF5140A Datasheet

TDF5140A circuit. Datasheet pdf. Equivalent

Part TDF5140A
Description Brushless DC motor drive circuit
Feature INTEGRATED CIRCUITS TDF5140A Brushless DC motor drive circuit Product specification 1999 March 15 .
Manufacture NXP
Datasheet
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INTEGRATED CIRCUITS TDF5140A Brushless DC motor drive circu TDF5140A Datasheet
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TDF5140A
INTEGRATED CIRCUITS
TDF5140A
Brushless DC motor drive circuit
Product specification
1999 March 15
Philips
Semiconductors



TDF5140A
Philips Semiconductors
Brushless DC motor drive circuit
Product specification
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.
SYMBOL
VP
VVMOT
VDO
ILIM
PARAMETER
supply voltage
input voltage to the output
driver stages
drop-out output voltage
current limiting
CONDITIONS
note 1
note 2
MIN.
4
1.7
IO = 100 mA
VVMOT = 10 V; RO = 3.9 0.7
Notes
1. An unstabilized supply can be used.
2. VVMOT = VP; +AMP IN = AMP IN = 0 V; all outputs IO = 0 mA.
TYP.
0.93
0.8
MAX.
18
20
1.05
1
UNIT
V
V
V
A
ORDERING INFORMATION
EXTENDED TYPE NUMBER
TDF5140A
PINS
18
PACKAGE
PIN POSITION
DIL
MATERIAL
plastic
CODE
SOT102
1999 March 15
2





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