tdf5242t NXP Semiconductors, tdf5242t Datasheet - Page 2

• Manufacturer Part Number: tdf5242t
• Description: Brushless Dc Motor Drive Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Note
1. An unstabilized supply can be used.
ORDERING INFORMATION
1997 Sep 12
V
V
V
I
TDF5242T
LIM
NUMBER
SYMBOL
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
Brake control input
Direction control input.
P
VMOT
O
Brushless DC motor drive circuit
TYPE
supply voltage
input voltage to the output
driver stages
driver output voltage
current limiting
NUMBER
SO28
PARAMETER
plastic small outline package; 28 leads; body width 7.5 mm
note 1
I
I
V
O
O
VMOT
= 100 mA; lower transistor
= 100 mA; upper transistor
= 14.5 V; R
CONDITIONS
DESCRIPTION
2
PACKAGE
APPLICATIONS
GENERAL DESCRIPTION
The TDF5242T is a bipolar integrated circuit for driving
3-phase brushless DC motors in full-wave mode.
The device functions sensorless, thus saving 3 hall-effect
sensors, using the back-EMF (Electro Motive Force)
sensing technique to sense the rotor position. It includes
6 pre-drivers able to control external FETs (Field Effect
Transistors) or bipolar transistors. It offers brake and
direction control. It is ideally suited for high-power
applications such as high-end hard disk drives and
automotive applications.
High-power applications, for instance:
– high-end hard disk drives
– automotive applications.
O
= 47
4
3
1.05
150
MIN.
200
TYP.
Preliminary specification
18
18
0.35
250
TDF5242T
MAX.
SOT136-1
VERSION
V
V
V
V
mA
UNIT