LM2596T-3.3/LF03

$2.68

Description：IC REG BUCK 3.3V 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：National Semiconductor
Package：Bulk

SKU:380684fb1679 Category: Voltage Regulators - DC DC Switching Regulators Brand: National Semiconductor

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Product introduction

LM2596T-3.3/LF03 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is IC REG BUCK 3.3V 3A TO220-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2596T-3.3/LF03

Description：IC REG BUCK 3.3V 3A TO220-5
Series：SIMPLE SWITCHER®
Mfr：National Semiconductor
Package：Bulk
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4.5V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：3A
Frequency - Switching：150kHz
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 LM2596T-3.3/LF03

LM2596T-3.3/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596T-3.3/LF03 is a step-down switching regulator manufactured by Texas Instruments, utilizing the SIMPLE SWITCHER architecture. It operates with an input voltage range of 4.5V to 40V and provides a fixed 3.3V output capable of delivering up to 3A of drive current. The device features a fixed internal switching frequency of 150kHz, enabling the use of compact passive components. It is housed in a TO-220-5 through-hole package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Fixed 3.3V output voltage with high line and load regulation
Integrated thermal shutdown and current limit protection
Low standby current for external shutdown capability

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load DC-DC conversion modules
Pre-regulator circuits for linear regulators
Standard 5V or 12V bus conversion systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify manufacturer origin as Texas Instruments handles the LM2596 family; confirm RoHS compliance status via official datasheets. Ensure the suffix LF03 corresponds to the specified TO-220-5 through-hole packaging configuration required for the design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this variant when a stable 3.3V rail is required from higher input voltages up to 40V. Consider the 150kHz switching frequency trade-off regarding component size versus efficiency. Verify thermal management requirements for the TO-220 package under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2596 series of SIMPLE SWITCHER power converters. The 'T' indicates a TO-220 through-hole package, while the '-3.3' specifies the fixed 3.3V output version. The LM2596 family is widely recognized for simplifying switch-mode power supply designs with minimal external component counts.