TDA5143 Philips Semiconductors, TDA5143 Datasheet - Page 2

• Manufacturer Part Number: TDA5143
• Description: Brushless DC motor drive circuit
• Manufacturer: Philips 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
TDA5143T
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 0.85 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
note 1
note 2
I
V
O
VMOT
= 100 mA
= 10 V; R
PIN POSITION
O
CONDITIONS
= 0 mA.
2
APPLICATIONS
GENERAL DESCRIPTION
The TDA5143T 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 as well as other applications (e.g.
laser beam printer).
SOL
General purpose spindle driver (e.g. for hard disk)
Laser beam printer.
O
= 5.9
PACKAGE
4
1.7
0.7
MIN.
MATERIAL
plastic
0.93
0.85
TYP.
Product specification
TDA5143T
18
16
1.05
1.0
MAX.
SOT163-1
CODE
V
V
V
A
UNIT