TDA5141 Datasheet, PDF (2/24 Pages) NXP Semiconductors – Brushless DC motor drive circuit

Philips Semiconductors
Brushless DC motor drive circuit
Product specification
TDA5141
FEATURES
• 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 1.9 A (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.
GENERAL DESCRIPTION
The TDA5141 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. It
is ideally suited for applications requiring powerful output
stages (minimum current limit of 1.9 A).
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
SYMBOL
PARAMETER
CONDITIONS
V_P
V_VMOT
V_DO
I_LIM
supply voltage
input voltage to the output
driver stages
drop-out output voltage
current limiting
note 1
note 2
I_O = 100 mA
V_VMOT = 10 V; R_O = 1.2 Ω
Notes
1. An unstabilized supply can be used.
2. V_VMOT = V_P; +AMP IN = −AMP IN = 0 V; all outputs I_O = 0 mA.
MIN.
4
1.7
TYP.
−
−
MAX.
18
16
UNIT
V
V
−
0.9
1.05 V
1.6
1.9
2.3
A
ORDERING INFORMATION
EXTENDED TYPE NUMBER
TDA5141
TDA5141T
TDA5141AT
PINS
18
28
20
PACKAGE
PIN POSITION
DIL
SOL
SOL
MATERIAL
plastic
plastic
plastic
CODE
SOT102
SOT136A
SOT163A
April 1994
2