LM2596T-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596T-ADJ/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a monolithic integrated circuit for step-down voltage regulation. It operates at a fixed switching frequency of 150 kHz and supports an input voltage range of 4.5 V to 40 V. The device provides an adjustable output voltage ranging from 1.2 V to 37 V with a maximum output current capability of 3 A. It utilizes a TO-220-5 through-hole package and includes internal frequency compensation, thermal shutdown, and current limiting protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 3 A power switch with a fixed 150 kHz oscillator for reduced external component count
• Includes internal frequency compensation to simplify design requirements
• Features TTL-compatible shutdown control for low standby current consumption
• Provides built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power systems requiring efficient step-down conversion
• Pre-regulator circuits for switching regulators
• Standard 5V DC-to-DC converters with extended input ranges
• Efficiently regulated supplies directly from bus lines

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance status per manufacturer specifications. Confirm the TO-220-5 through-hole package variant matches the required mounting style. Ensure the ADJ designation corresponds to the adjustable output version rather than fixed voltage options. Cross-reference the datasheet revision date to confirm technical parameter accuracy before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current step-down solution with minimal external passive components is required. The 150 kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the input voltage does not exceed the 40 V maximum rating under all operating conditions. Consider the thermal performance of the TO-220 package for heat dissipation requirements in the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2596 series of SIMPLE SWITCHER regulators, which are designed for straightforward implementation of buck converters. The series includes both fixed output voltages (3.3V, 5V, 12V) and adjustable versions. The T suffix specifically denotes the through-hole TO-220-5 package, distinguishing it from surface-mount variants like the S or SX series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596T-ADJ is the non-Pb equivalent predecessor. LM2596S-ADJ/NOPB offers identical electrical performance in a surface-mount TO-263 package. LM2596SX-ADJ/NOPB provides the same functionality in a compact D2PAK/TO-263 package.