LM2575T LM2575 LM 2575 Fixed 5V 3A Voltage Regulator Buck IC Max Input 40V Max Output Fixed 5V Step Down Voltage Regulator IC 5 Pin TO-220-5 Switching Voltage Regulator

Description: LM2575T LM2575 LM 2575 Fixed 5V 3A Voltage Regulator

The LM2575 is a commonly used popular step-down switching regulator IC. The adjustable version can take in input voltage from 4.5V to 40V and convert it to variable voltage sourcing upto of 3A of continues current. Because of its high current capability is commonly used in power modules to power/control heavy loads.

LM2575-5V Step Down switching regulatorLM2575 voltage regulator is a monolithic integrated circuit ideally suited for easy and convenient design of a step down switching regulator(buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2575 voltage regulator are offered by several different inductor manufacturers. Since the LM2575 converter is a switch mode power supply, its efficiency is significantly higher in comparison with popular three terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heat sink is required or its size could be reduced dramatically. A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch mode power supplies. The LM2575 features include a guaranteed +-4% tolerance on output voltage within specified input voltages and output load conditions, and +-10% on the oscillator frequency (+-2% over 0 Degree C to 125 Degree C). External shutdown is included, featuring 80 uA (typical) standby current. The output switch includes cycle by cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features:

• Chip Name: LM2575T
• 3A Step Down Voltage Regulator IC
• Available as 3.3V regulator, 5V Regulator
• Input Supply Voltage: 4.5V to 40V
• Minimum Output Voltage: 3.16V
• Continuous Output Current: 3A
• Peak Output Current: 6.9A
• Switching Frequency: 150KHz
• Available in To-220 and To-263 Package

LM2575 Introduction:

The LM2575 is known for its high current rating of 3A. It is available in many versions with fixed output voltage like 3.3V, 5V and 12V. But, the most famous one is the LM2575-ADJ which has variable output voltage. The IC is basically a buck converter that operates on 150KHz switching frequency, it takes in an input voltage and uses the internal switching circuit to regulated a desired output voltage. It has high efficiency and in-built Thermal shutdown and current limit functionalities. So if you are looking for a small high package, easy to use high current buck converter IC then LM2575 might me the right choice for you.

How to use the LM2596 Regulator:

The LM2575 is very easy to use because it requires very minimum number of components. The unregulated voltage is given to pin 1 (Vin) across a filter capacitor to reduce input noise. The ON/OFF or enable pin (pin 5) should be connected to ground to enable the IC. If made high the IC will enter shutdown mode and prevent leakage current. This feature will be useful to save input power when operating via battery. The feedback pin is the important pin which sets the output voltage. It sense the output voltage and based on the value of this output voltage the switching frequency of the internal switch is adjusted to provide the desired output voltage. Finally the output voltage is obtained through pin 2 through an LC filter. The complete circuit diagram is given below, you can often find these circuit in the LM2575 DC Converter module.

Applications:

• Used in battery circuits since they have high efficiency
• Step-down Linear regulators
• Used in small SMPS circuits
• Battery Operated Applications
• Variable Voltage generators
• Miniature RPS Circuits

Package Include:

• 1 x LM2575T LM2575 LM 2575 Fixed 5V 3A Voltage Regulator Buck IC Max Input 40V Max Output Fixed 5V Step Down Voltage Regulator IC 5 Pin TO-220-5 Switching Voltage Regulator