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TDA5142T Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. TDA5142T
Description  Brushless DC motor drive circuit
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 2 page
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June 1994
2
Philips Semiconductors
Product specification
Brushless DC motor drive circuit
TDA5142T
FEATURES
• Full-wave commutation without position sensors
• Built-in start-up circuitry
• Six outputs that can drive three external transistor pairs:
– output current 0.2 A (typ.)
– low saturation voltage
– built-in current limiter
• Thermal protection
• Tacho output without extra sensor
• Transconductance amplifier for an external
control transistor
• Motor brake facility.
APPLICATIONS
• High-power applications e.g.:
– high-end hard disk drives
– automotive.
GENERAL DESCRIPTION
The TDA5142T 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 a brake function and 6 pre-drivers able to
control FETs or bipolar external transistors. It is ideally
suited for high-power applications such as high-end hard
disk drives, automotive and other applications.
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Note
1. An unstabilized supply can be used.
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
3
18
V
VO
driver output voltage
IO = 100 mA; lower transistor
−−
0.35
V
IO = 100 mA; upper transistor
1.05
−−
V
ILIM
current limiting
VVMOT = 14.5 V; RO =47 Ω
150
200
250
mA
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA5142T
24
SOL
plastic
SOT137-1




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