tda5144t NXP Semiconductors, tda5144t Datasheet - Page 2

• Manufacturer Part Number: tda5144t
• Description: Brushless Dc Motor Drive Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Notes
1. An unstabilized supply can be used.
2. V
ORDERING INFORMATION
June 1994
V
V
V
I
TDA5144AT
TDA5144T
LIM
Full-wave commutation (using push/pull drivers at the
output stages) without position sensors
Built-in start-up circuitry
Three push-pull outputs:
– output current 2.0 A (typ.)
– low saturation voltage
– built-in current limiter
– soft-switching outputs for low Electromagnetic
Thermal protection
Flyback diodes
Tacho output without extra sensor
Transconductance amplifier for an external control
transistor.
P
VMOT
DO
Brushless DC motor drive circuit
SYMBOL
Interference (EMI)
VMOT
TYPE NUMBER
= V
P
; +AMP IN = AMP IN = 0 V; all outputs I
supply voltage
input voltage to the output
driver stages
drop-out output voltage
current limiting
PARAMETER
PINS
20
28
note 1
note 2
I
V
O
VMOT
= 100 mA
= 10 V; R
PIN POSITION
O
CONDITIONS
= 0 mA.
2
APPLICATIONS
GENERAL DESCRIPTION
The TDA5144 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.
A special circuit is built-in to reduce the EMI (soft switching
output stages). It is ideally suited as a drive circuit for hard
disk drive spindle motor requiring powerful output stages
(current limit of 2.0 A). It can also be used in e.g. laser
beam printer and other applications.
SOL
SOL
General purpose spindle driver (e.g. for hard disk)
Laser beam printer.
O
= 1.2
PACKAGE
4
1.7
1.8
MIN.
MATERIAL
plastic
plastic
0.90
2.0
TYP.
Product specification
18
16
1.05
2.4
MAX.
TDA5144
SOT163-1
SOT136-1
CODE
V
V
V
A
UNIT