LM3679UR-1.5/NOPB

$0.39

Description：IC REG BUCK 1.5V 350MA 5DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:17b40af98742 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM3679UR-1.5/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 1.5V 350MA 5DSBGA. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM3679UR-1.5/NOPB

Description：IC REG BUCK 1.5V 350MA 5DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：1.5V
Voltage - Output (Max)：-
Current - Output：350mA
Frequency - Switching：3MHz
Synchronous Rectifier：Yes
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：5-XFBGA, DSBGA
Supplier Device Package：5-DSBGA (1.47x1.02)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM3679UR-1.5/NOPB

LM3679UR-1.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3679UR-1.5/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments. It provides a stable 1.5V output with a maximum current capacity of 350mA. The device operates from an input voltage range up to 5.5V and utilizes a high switching frequency of 3MHz to minimize external component size. It features synchronous rectification for improved efficiency and is housed in a compact 5-pin DSBGA package, suitable for space-constrained portable electronics.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated synchronous rectifier for enhanced power conversion efficiency
High switching frequency enables the use of small passive components
Ultra-low profile packaging designed for thin mobile devices

Voltage Regulators - DC DC Switching Regulators Applications

Portable consumer electronics requiring low profile regulators
Battery-powered handheld devices
Space-constrained embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance when sourcing. Confirm the UR package variant matches your PCB footprint requirements. Ensure the fixed 1.5V output aligns with your system voltage rails before procurement. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.5V rail is required with minimal board space. The 350mA output current limits its use to low-power applications compared to higher-current buck converters. Consider the 3MHz frequency trade-off between component size and electromagnetic interference. Verify input voltage compatibility within the specified operating range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3679 family of miniature step-down converters. It shares architectural similarities with other variants like the LM3679UR-1.8/NOPB but differs in fixed output voltage. The series targets ultra-low-profile applications where standard packages are too tall. It complements Texas Instruments' portfolio of efficient DC-DC solutions for portable markets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM3679UR-1.2/NOPB and LM3679UR-1.8/NOPB for different voltage requirements. These share identical pinouts and packaging but offer distinct fixed output voltages. Ensure the load current does not exceed 350mA when swapping between these variants.

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.