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TDA5145T Folha de dados(PDF) 2 Page - NXP Semiconductors

Nome de Peças TDA5145T
Descrição Electrónicos  Brushless DC motor drive circuit
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Fabricante Electrônico  PHILIPS [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA5145T Folha de dados(HTML) 2 Page - NXP Semiconductors

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June 1994
2
Philips Semiconductors
Product specification
Brushless DC motor drive circuit
TDA5145
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 2.0 A (typ.)
– built-in current limiter
– soft-switching outputs for low Electromagnetic
Interference (EMI)
• Thermal protection
• Flyback diodes
• Tacho output without extra sensor
• Motor brake facility
• Direction control input
• Reset function
• Transconductance amplifier for an external control
transistor.
APPLICATIONS
• General purpose spindle driver e.g.:
– Hard disk drive
– Tape drive
– Optical disk drive.
GENERAL DESCRIPTION
The TDA5145 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 includes bidirectional control, brake function and has a
special circuit built-in to reduce the EMI (soft switching
output stages).
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Notes
1. An unstabilized supply can be used.
2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA.
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VP
supply voltage
note 1
4
18
V
VVMOT
input voltage to the output driver
stages
note 2
1.7
16
V
VDO
drop-out output voltage
IO = 100 mA
0.90
1.05
V
ILIM
current limiting
VVMOT = 10 V; RO = 1.2 Ω
1.8
2.0
2.5
A
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA5145
28
DIL
plastic
SOT117-1
TDA5145T
28
SOL
plastic
SOT136-1


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