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TDA5144

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.) low saturation voltage built-in current limiter soft-switching outputs for low Electromagnetic Interferen...

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TDA5144: 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.) low sat...

TDA5144 Data Sheet

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Part Number:
TDA5144
Supply Ability:
5000

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Product Details

Description



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.)
         low saturation voltage
         built-in current limiter
         soft-switching outputs for low Electromagnetic Interference (EMI)
` Thermal protection
` Flyback diodes
` Tacho output without extra sensor
` Transconductance amplifier for an external control transistor.


Application

· General purpose spindle driver (e.g. for hard disk)
· Laser beam printer.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VP
 supply voltage   - 18 V
VI input voltage; all pins except
VMOT		 VI < 18 V -0.3 VP + 0.5 V
VVMOT VMOT input voltage   -0.5 17 V
VO output voltage
AMP OUT and FG
MOT0, MOT1, MOT2 and MOT3		   GND
-1		 VP
VVMOT + VDHF		 V
V
VI input voltage CAP-ST, CAP-TI,
CAP-CD and CAP-DC		   - 2.5 V
Tstg storage temperature   -55 +150
Tamb
 operating ambient temperature   0 +70
Ptot total power dissipation see Figs 4 and 5 - - W
Ves electrostatic handling see Chapter "Handling" - 500 V



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). TDA5144 is ideally suited as a drive circuit for hard disk drive spindle motor requiring powerful output stages current limit of 2.0 A). TDA5144 can also be used in e.g. laser beam printer and other applications.

 




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