Need advice with DC motor driver

Other Hardware Motors, Mechanics, Power and CNC
1

I have 5V DC motor as a pump and power supply from smartphone adapter (5V-2A).
This motor requires about 0.6A to start rotating.

I use L298_N motor driver but there is a HUGE voltage drop on it. From 5.1V (open circuit) to 1.2V. There isn't any voltage drop on power supply so all of that drop is from L298_N.

Can someone suggest me some other more efficient motor driver for these lower voltages?

2

Plolou has a wide selection of DC motor drivers. Their drivers are not expensive and are much much better than the ancient and inefficient L298.

3

Thanks!
That is exactly what I was looking for.

4

From what I can determine you simply want to turn the pump on and off. If this is correct you can simply use an avalanche rated MOSFET, no fly back diode needed. Best to use a 27 ohm resistor in series with the gate to keep it stable.