LM2678SD-3.3/NOPB

$5.69

Description：IC REG BUCK 3.3V 5A 14VSON
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:c8c7be1838f3 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2678SD-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 14VSON. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2678SD-3.3/NOPB

Description：IC REG BUCK 3.3V 5A 14VSON
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：5A
Frequency - Switching：260kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：14-VDFN Exposed Pad
Supplier Device Package：14-VSON (5x6)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2678SD-3.3/NOPB

LM2678SD-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2678SD-3.3/NOPB is a step-down switching regulator from Texas Instruments, operating at a fixed frequency of 520 kHz. It delivers an output voltage of 3.3 V with a maximum load current of 1 A. The device integrates a 0.44 Ω N-channel MOSFET switch and supports input voltages up to 40 V. It features internal frequency compensation for stability and includes thermal shutdown protection. The component is housed in a compact 8-pin SOIC package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates a high-side N-channel power MOSFET switch to minimize external component count
Provides fixed-frequency operation at 520 kHz for efficient energy transfer
Includes comprehensive protection mechanisms such as thermal shutdown and current limiting

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for embedded systems
Battery-powered equipment requiring efficient voltage conversion
General-purpose DC/DC conversion in industrial control circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix NOPB to ensure lead-free compliance and RoHS adherence. Confirm the package type matches the required PCB footprint. Check manufacturer documentation for specific storage and handling requirements related to moisture sensitivity levels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with moderate current demands up to 1 A. Ensure the input voltage range does not exceed 40 V. Consider the 520 kHz switching frequency for inductor size trade-offs. Verify that the thermal performance of the SOIC package meets the application's heat dissipation needs.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2678 family of simple switcher regulators. It offers a cost-effective solution for step-down applications compared to linear regulators. The family provides various fixed output voltages and adjustable versions to suit different system requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements may include other LM2678 variants with different output voltages or packages. Verify electrical specifications and thermal characteristics before substitution. Consult official cross-reference lists for confirmed equivalents.

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