LM3677TL-1.2

$0.59

Description：IC REG BUCK 1.2V 600MA 5DSBGA
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:addd67689c5b Category: Voltage Regulators - DC DC Switching Regulators Brand: National Semiconductor

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Product introduction

LM3677TL-1.2 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 600MA 5DSBGA. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM3677TL-1.2

Description：IC REG BUCK 1.2V 600MA 5DSBGA
Series：-
Mfr：National Semiconductor
Package：Bulk
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：2.7V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：1.2V
Voltage - Output (Max)：-
Current - Output：600mA
Frequency - Switching：3MHz
Synchronous Rectifier：Yes
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：5-WFBGA, DSBGA
Supplier Device Package：5-DSBGA (1.5x1.2)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM3677TL-1.2

LM3677TL-1.2

Voltage Regulators - DC DC Switching Regulators Overview

The LM3677TL-1.2 is a fixed-output buck converter manufactured by National Semiconductor, providing a regulated 1.2V output at up to 600mA. It operates within an input voltage range of 2.7V to 5.5V and utilizes a 3.5MHz switching frequency. The device employs pulse-width modulation (PWM) for high efficiency under heavy loads and automatically transitions to pulse-frequency modulation (PFM) during light-load conditions to extend battery life in portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Automatic transition between PWM and PFM control techniques to optimize efficiency across varying load currents
Internal synchronous rectification ensures high conversion efficiency during operation
Integrated soft start functionality limits inrush current during power-up sequences

Voltage Regulators - DC DC Switching Regulators Applications

Powering RF tuners in cellular handsets requiring low noise
Mobile TV applications in portable devices
General purpose power supply for low voltage circuits from single Li-Ion cells

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TL' corresponds to the required 5DSBGA package configuration. Confirm that the fixed 1.2V output aligns with system requirements, as adjustable versions exist within the family. Ensure compatibility with the manufacturer's RoHS compliance standards before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for mobile systems powered by single-cell lithium batteries. The 3.5MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the PFM mode benefits if light-load efficiency is critical for extending operational battery time in portable electronics.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3677 series of step-down DC-DC converters designed for portable consumer electronics. It shares architectural similarities with the LM3674 but offers higher switching frequencies and different packaging options. The series is optimized for space-constrained designs requiring efficient power management from single-cell battery sources.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3677LE-1.8/NOPB: Different output voltage and package type; verify pinout compatibility. LM3677TL-1.5/NOPB: Same package but fixed 1.5V output; suitable only if voltage tolerance permits.

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