LM2677S-3.3/NOPB

$5.94

Description：IC REG BUCK 3.3V 5A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:1a3d922b419e Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2677S-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 5A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2677S-3.3/NOPB

Description：IC REG BUCK 3.3V 5A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube
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：5A
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 LM2677S-3.3/NOPB

LM2677S-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677S-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator in a TO-263-7 package. It provides a fixed 3.3 V output with a maximum load current of 5 A. The device operates from an input voltage range of 8 V to 40 V at a fixed switching frequency of 260 kHz. It features integrated power and control circuitry, requiring only external passive components for operation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated high-current power switch enables efficient buck conversion without external driver requirements
Fixed internal oscillator ensures stable switching performance across the operating temperature range
Built-in thermal shutdown protects against overheating during fault conditions or excessive loads

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for digital logic circuits
Power supply conditioning for embedded microprocessors
Industrial equipment DC bus distribution systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the suffix /NOPB indicates lead-free compliance and RoHS adherence as per manufacturer specifications. Confirm the physical package matches the TO-263-7 footprint and pinout before integration. Ensure the fixed 3.3 V output variant aligns with the target design requirements rather than adjustable versions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V rail is required with up to 5 A capacity. The 260 kHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Verify that the input voltage remains within the 8 V to 40 V window to ensure proper regulation and efficiency.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2677 family of SIMPLE SWITCHER regulators, which are designed for high-efficiency step-down applications. The 'S' designation identifies the surface-mount TO-263-7 package, while the '-3.3' specifies the fixed output voltage. The '/NOPB' suffix denotes non-phosphorus bromine compliant packaging.