TDF5140A Ver la hoja de datos (PDF) - NXP Semiconductors.
Número de pieza
componentes Descripción
Fabricante
TDF5140A Datasheet PDF : 19 Pages
| |||
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 Ω 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
Share Link: 