LM2670SX-3.3/NOPB

$4.22

Description：IC REG BUCK 3.3V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:57e78b529c49 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2670SX-3.3/NOPB 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 3A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2670SX-3.3/NOPB

Description：IC REG BUCK 3.3V 3A 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)：8V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：3A
Frequency - Switching：260kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package：TO-263 (DDPAK-7)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2670SX-3.3/NOPB

LM2670SX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670SX-3.3/NOPB is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator with synchronous rectification, manufactured by Texas Instruments. It operates from an input voltage range of 8V to 40V and provides a fixed 3.3V output at up to 3A. The device features a 260kHz switching frequency and includes internal compensation for simplified design. Key electrical parameters include a maximum quiescent current of 4.2mA, an operating temperature range of -40°C to +125°C, and a TO-263 (D2PAK) package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated synchronous rectification for improved efficiency
Internal frequency compensation simplifies external component selection
Fixed 3.3V output option eliminates external feedback resistors

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation in industrial equipment
Battery-powered systems requiring efficient step-down conversion
General-purpose power supplies with 8V to 40V input rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance per Texas Instruments standards. Confirm the SX variant corresponds to the TO-263 package style. Ensure the 3.3 fixed output version matches the specific application voltage requirement rather than the adjustable variant.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3V output is required without external resistor networks. The synchronous design offers higher efficiency compared to non-synchronous alternatives like the LM2676. Consider the thermal performance of the TO-263 package for high-current applications exceeding typical D2PAK limits.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the SIMPLE SWITCHER family, the LM2670 series provides high-efficiency step-down solutions. The LM2670SX-3.3/NOPB specifically targets applications needing a stable 3.3V rail from higher input voltages, distinguishing it from the adjustable LM2670S-ADJ/NOPB and lower-current variants.