TDA5145 NXP Semiconductors, TDA5145 Datasheet - Page 2

• Manufacturer Part Number: TDA5145
• Manufacturer: NXP Semiconductors

Specifications of TDA5145

• Operating Temperature Classification: Commercial
• Package Type: PDIP
• Operating Supply Voltage (min): 4V
• Operating Supply Voltage (max): 18V
• Lead Free Status / RoHS Status: Not Compliant

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Notes
1. An unstabilized supply can be used.
2. V
ORDERING INFORMATION
June 1994
V
V
V
I
TDA5145
TDA5145T
LIM
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
Thermal protection
Flyback diodes
Tacho output without extra sensor
Motor brake facility
Direction control input
Reset function
Transconductance amplifier for an external control
transistor.
P
VMOT
DO
Brushless DC motor drive circuit
SYMBOL
Interference (EMI)
VMOT
TYPE NUMBER
= V
P
; +AMP IN = AMP IN = 0 V; all outputs I
supply voltage
input voltage to the output driver
stages
drop-out output voltage
current limiting
PARAMETER
PINS
28
28
note 1
note 2
I
V
O
VMOT
= 100 mA
O
PIN POSITION
CONDITIONS
= 0 mA.
= 10 V; R
2
APPLICATIONS
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).
SOL
General purpose spindle driver e.g.:
– Hard disk drive
– Tape drive
– Optical disk drive.
DIL
O
= 1.2
PACKAGE
4
1.7
1.8
MIN.
MATERIAL
plastic
plastic
0.90
2.0
TYP.
Product specification
18
16
1.05
2.5
MAX.
TDA5145
SOT136-1
SOT117-1
CODE
V
V
V
A
UNIT