LM340T-5.0 Voltage Regulator: LM340T-5.0 Pinout, Application and Circuit

LM340T5.0 Pinout

Symbol

LM340T-5.0 Symbol

Footprint 

LM340T-5.0 Footprint

3D Model

LM340T-5.0 3D Model

The LM340T5.0  is a three-terminal monolithic positive voltage regulator with internal current-limiting, thermal shutdown, and safe-area compensation that makes it virtually indestructible. They can deliver above 1.0A output current if appropriate heat sinking is given. Though it's primarily utilized as a fixed voltage regulator, these devices can be combined with external components to achieve adjustable output voltages and currents by tuning them with some additional components.

Complete specifications at 1A load
Output voltage tolerances of ±2% at Tj = 25˚C and ±4% over the temperature range
Line regulation of 0.01% of VOUT/V of ∆VIN at 1A load
Load regulation of 0.3% of VOUT/A
Internal thermal overload protection
Internal short-circuit current limit
Output transistor safe area protection
P+ Product Enhancement tested

• Constant +5V output regulator to power microcontrollers and sensors in most of the projects

• Adjustable Output Regulator

• Current Limiter for certain applications

• Regulated Dual Supply

• Output Polarity-Reversal-Protection Circuit

One of the most common components in any electrical circuit is a voltage regulator. They can either give a constant output voltage or step down a greater voltage to a lower voltage. In our situation, the LM340T5.0  IC  is a well-known regulator  IC that is used in a wide range of projects and is available in a variety of constant voltage configurations. This IC has a maximum output current of 1A. However, because this IC is a linear regulator, it must dissipate a lot of heat to function effectively. Because the IC loses a lot of heat, a heat sink is advised for projects that use a lot of currents.

For instance, if the input voltage is 12V and you consume 1A, (12-5) * 1 = 7W. The heat generated by these 7 Watts will be dispersed. As a result, a massive heat sink is required to dissipate as much power as west heat.