LM3940 3.3V Voltage Regulator


Availability: In stock


Quick Overview

LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

LM3940 3.3V Voltage Regulator

Double click on above image to view full picture

Zoom Out
Zoom In


The LM3940 is a 1A low dropout regulator designed to provide 3.3V from a 5V supply, ideally suited for systems which contain both 5V and 3.3V logic, with prime power provided from a 5V bus. Because the LM3940 is a true low dropout regulator, it can hold its 3.3V output in regulation with input voltages as low as 4.5V.

The T0-220 package of the LM3940 means that in most applications the full 1A of load current can be delivered without using an additional heatsink.

Additional Information

Package TO-220