Texas Instruments

LM2577T-ADJ/LF03  

DC Switching Voltage Regulators

LM2577T-ADJ/LF03 Description

The LM2577T-ADJ/LF03 is a versatile DC switching voltage regulator from Texas Instruments, designed to offer adjustable output voltage with exceptional performance and efficiency. This regulator is part of the SIMPLE SWITCHER® series, known for its ease of use and high reliability. It features a input wide voltage range from 3.5V to 40V, making it suitable for a variety of power supply applications. The LM2577T-ADJ/LF03 can deliver up to 3A of output current through its switch, ensuring robust power delivery. With a switching frequency of 52kHz, it balances efficiency and size, making it ideal for compact designs. The regulator supports multiple topologies, including boost, flyback, and forward converter, providing flexibility in design choices. It is housed in a through-hole TO220 package, which is both durable and easy to integrate into various PCB layouts.

LM2577T-ADJ/LF03 Features

• Adjustable Output Voltage: The LM2577T-ADJ/LF03 offers an adjustable output voltage range from 1.23V to 60V, providing flexibility to meet diverse power requirements.
• Wide Input Voltage Range: With an input voltage range of 3.5V to 40V, this regulator can operate effectively across a broad spectrum of input conditions.
• High Output Current Capability: The regulator is capable of delivering up to 3A of output current, making it suitable for high-power applications.
  -Multiple ** Topologies**: Supports boost, flyback, and forward converter topologies, offering designers multiple options to optimize their power supply designs.
• Switching Frequency: Operates at a switching frequency of 52kHz, balancing efficiency and component size.
• Positive Output Configuration: Ensures compatibility with most positive voltage applications.
• Compliance and Reliability: The LM2577T-ADJ/LF03 is REACH unaffected and RoHS3 compliant, ensuring environmental and regulatory compliance. It also has a moisture sensitivity level (MSL) of 1, making it suitable for unlimited storage conditions.
• Packaging: Available in a through-hole TO220 package, which is robust and easy to mount on PCBs.

LM2577T-ADJ/LF03 Applications

The LM2577T-ADJ/LF03 is ideal for a wide range of applications due to its flexibility and robust performance. Key applications include:

• Power Supplies: Suitable for general-purpose power supplies, providing adjustable voltage output to meet varying load requirements.
• Battery Chargers: Can be used in battery charging circuits, offering adjustable voltage to accommodate different battery chemistries and charging profiles.
• Industrial Equipment: Ideal for industrial applications where a wide input voltage range and high output current are required.
• Telecommunications: Effective in telecom equipment where reliable power delivery and adjustable voltage are crucial.
• Consumer Electronics: Suitable for consumer devices that require efficient power management and adjustable voltage output.

Conclusion of LM2577T-ADJ/LF03

The LM2577T-ADJ/LF03 from Texas Instruments stands out as a highly versatile and reliable DC switching voltage regulator. Its wide input voltage range, adjustable output voltage, and high output current capability make it suitable for a broad range of applications. The regulator's support for multiple topologies and its robust through-hole packaging further enhance its appeal. Compliance with REACH and RoHS3 standards ensures that it meets environmental and regulatory requirements. Whether used in power supplies, battery chargers, industrial equipment, telecommunications, or consumer electronics, the LM2577T-ADJ/LF03 offers a reliable and efficient solution for adjustable voltage regulation.

LM2577T-ADJ/LF03 Documents

Download datasheets and manufacturer documentation for LM2577T-ADJ/LF03

Images :

Mechanical Outline Drawing      

PCN :

PROCESS CHANGE NOTIFICATION (PDF)      

Models :

LM2577T-ADJ/LF03 Symbol & Footprint by SnapMagic      

Application Notes :

Basic Calculation of a Boost Converter's Power Stage (Rev. C)       Understanding Boost Power Stages In Switchmode Power Supplies       Negative Buck Switching Regulator (using LM258x)       AN-777 LM2577 Three Output Isolated Flyback Regulator (Rev. B)       Working With Boost Converters