LM2591HVSX-3.3

$4.46

Description：IC REG BUCK 3.3V 1A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:921fcef9f0f2 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2591HVSX-3.3 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 BUCK 3.3V 1A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2591HVSX-3.3

Description：IC REG BUCK 3.3V 1A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4.5V
Voltage - Input (Max)：60V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：1A
Frequency - Switching：150kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package：TO-263 (DDPAK-5)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2591HVSX-3.3

LM2591HVSX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2591HVSX-3.3/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down voltage regulator with a fixed 3.3 V output. It supports an input voltage range of 4.5 V to 60 V and delivers up to 1 A of output current. Operating at a switching frequency of 150 kHz, the device utilizes a buck topology in a TO-263-5 surface-mount package. It features a typical quiescent current of 5 mA and operates within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated monolithic controller for simplified design
Fixed internal switching frequency reduces external component count
Built-in thermal shutdown protection
Standardized pinout compatible with legacy designs

Voltage Regulators - DC DC Switching Regulators Applications

Distributed power supply architectures
Pre-regulator stages for switching regulators
Battery-powered systems requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the package variant matches the required footprint. Ensure the fixed 3.3 V output aligns with system requirements. Check datasheet for specific inductor selection guidelines to maintain stability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a wide input voltage range up to 60 V. The fixed 3.3 V output eliminates the need for external feedback resistors. Consider the 1 A current limit when sizing downstream loads. Evaluate thermal performance based on the expected voltage drop and ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2591HV series, designed for high-voltage step-down conversion. It serves as a direct replacement for older National Semiconductor versions. The device simplifies power supply design by integrating the switch and control circuitry into a single package.