4A DC Motor Drive Circuit

Driving DC motors with integrated circuits is simple.
It a good choose for small dc motor drive.
Resistor 0.1 ohm for current feed back
FR303 is fast recovery diode























L298
The L298 is an integrated monolithic circuit in a 15-
lead Multiwatt and PowerSO20 packages. It is a
high voltage, high current dual full-bridge driver designedto
accept standardTTL logic levels and drive
inductive loads such as relays, solenoids, DC and
steppingmotors. Two enable inputs are provided to
enableor disable thedevice independentlyofthe input
signals. The emitters of the lower transistors of
each bridge are connected together and the corresponding
external terminal can be used for the connection of
an external sensing resistor.Anadditional
supply input is provided so that the logic works at a
lower voltage.

Specification
- OPERATINGSUPPLY VOLTAGEUP TO 46 V
- TOTAL DC CURRENT UP TO 4 A
- LOW SATURATION VOLTAGE
- OVERTEMPERATURE PROTECTION
LOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V
(HIGH NOISE IMMUNITY)

Datasheet