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TDA5146T Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. TDA5146T
Description  Brushless DC motor drive circuit
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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Philips Semiconductors
Product specification
TDA5146T
Brushless DC motor drive circuit
2
1994 May 18
FEATURES
Full–wave commutation (using push/pull drivers at the output stages) without position sensors
Built–in start–up circuit
Three push–pull outputs:
– 2 A output current (Typical)
– Built–in current limiter
Thermal protection
Soft switching outputs
Flyback diodes
Tacho output sensor
Brake function
Direction control input
Reset function
FET driver stage to be used in a buck converter
APPLICATIONS
General purpose spindle driver (e.g., HDD, tape driver)
GENERAL DESCRIPTION
The TDA5146T is a bipolar integrated circuit used to drive brushless DC motors in full–wave mode. The device senses the rotor position using
an EMF –sensing technique and is ideally suited as a drive circuit for a hard disk drive motor or tape drive.
QUICK REFERENCE DATA
Measured over full voltage and temperature ranges
Symbol
Parameter
Min.
Typ.
Max.
Unit
VP
Supply voltage range (Note 1)
4
18
V
Vsup
Supply for the FET driver voltage range
4
18
V
VVMOT
Input voltage to the output driver stages (see Fig. 1)
1.7
16
V
VDo
Driver output voltage drop IO= 100 mA
0.9
1.05
V
ILIM
Current limiting
1.80
2.0
2.5
A
NOTES:
1. An unstabilized supply can be used
2. VVMOT=VP ; all outputs IO = 0 mA
ORDERING AND PACKAGE INFORMATION
Type n mber
Package
Type number
Name
Description
Version
TDA5146T
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1




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