LM3670MF-1.2/NOPB

$0.55

Description：IC REG BUCK 1.2V 350MA SOT23-5
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:36a3000a5534 Category: Voltage Regulators - DC DC Switching Regulators Brand: National Semiconductor

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Product introduction

LM3670MF-1.2/NOPB is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is IC REG BUCK 1.2V 350MA SOT23-5. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM3670MF-1.2/NOPB

Description：IC REG BUCK 1.2V 350MA SOT23-5
Series：-
Mfr：National Semiconductor
Package：Bulk
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)：1.2V
Voltage - Output (Max)：-
Current - Output：350mA
Frequency - Switching：1MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM3670MF-1.2/NOPB

LM3670MF-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MF-1.2/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, formerly National Semiconductor. It operates within an input voltage range of 2.5 V to 5.5 V and provides a fixed output of 1.2 V at up to 600 mA. The device features a 2 MHz switching frequency and utilizes SOT-23-5 packaging. It supports automatic PFM/PWM mode switching for efficiency optimization across load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Synchronous buck topology with integrated high-side and low-side MOSFETs
Automatic transition between Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) modes
Voltage-mode control architecture for stable regulation

Voltage Regulators - DC DC Switching Regulators Applications

Wireless mobile phones
Digital cameras
MP3 players
Personal digital assistants (PDAs)
Wireless LAN devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the suffix /NOPB indicates lead-free and RoHS compliance. Ensure the specific -1.2 variant matches the required 1.2 V output voltage. Check datasheet revisions for any pinout or thermal characteristic updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for portable applications requiring compact SOT-23-5 packaging and high efficiency. The 2 MHz frequency allows for smaller external inductors compared to lower-frequency converters. Consider the 600 mA current limit for moderate power loads. Verify input voltage stability within the 2.5 V to 5.5 V range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3670/LM3671 series of miniaturized DC-DC converters. These devices were introduced to address space constraints in portable electronics. The LM3670 series specifically offers fixed output voltages, distinguishing it from adjustable variants like the LM3670-ADJ.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3670MF-1.8/NOPB: Same package and functionality with 1.8 V output. LM3671MF-1.2/NOPB: Similar performance with potentially different switching frequency characteristics.

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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.