LM2577T-ADJ/LF03

$6.29

Description：IC REG BST FLYBCK ADJ 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:b5657bac6410 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2577T-ADJ/LF03 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BST FLYBCK ADJ 3A TO220-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2577T-ADJ/LF03

Description：IC REG BST FLYBCK ADJ 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive
Topology：Boost, Flyback, Forward Converter
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3.5V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.23V
Voltage - Output (Max)：60V (Switch)
Current - Output：3A (Switch)
Frequency - Switching：52kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-220-5 Formed Leads
Supplier Device Package：TO-220-5
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2577T-ADJ/LF03

LM2577T-ADJ/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577T-ADJ/LF03 is a SIMPLE SWITCHER step-up voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 3.5V to 40V and provides an adjustable output voltage from 1.23V up to 60V. The device supports a maximum switch current of 3A and functions at a fixed switching frequency of 52kHz. Packaged in a TO-220-5 through-hole case, it integrates internal compensation and a 5.2V reference for stable regulation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated feedback loop compensation eliminates the need for external components
Fixed 52kHz switching frequency enables compact passive component selection
Internal oscillator ensures precise duty cycle control without external timing resistors

Voltage Regulators - DC DC Switching Regulators Applications

DC-DC boost converter circuits
Flyback power supply designs
Forward converter topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix LF03 against the manufacturer datasheet to confirm package variations or tape-and-reel specifications. Confirm RoHS compliance status as regulatory requirements may vary by production batch. Ensure the ordering part number matches the exact thermal and pin configuration required for the target PCB footprint.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current step-up solution is required with minimal external parts. The TO-220-5 package facilitates heat dissipation for continuous 3A operation. Verify that the application input voltage remains within the 3.5V minimum threshold to ensure proper oscillator startup and regulation stability.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2577 SIMPLE SWITCHER family, designed for efficient DC-DC conversion. It serves as a monolithic integrated circuit simplifying the design of boost, flyback, and forward converters. The series is characterized by its ease of use, requiring only a few external components to establish a regulated output voltage.