LM2614ATL

Special Purpose Regulators Overview

The LM2614ATL is a high-frequency synchronous step-down switching regulator manufactured by National Semiconductor. It integrates a 0.35-ohm N-channel power switch and a 0.28-ohm P-channel driver switch to achieve efficient voltage conversion. The device operates with an input voltage range of 2.7V to 6V, delivering up to 1A of output current. It supports adjustable output voltages from 0.8V to the input rail. The controller utilizes fixed-frequency pulse-width modulation at 1.2MHz or 2.2MHz to minimize external component size. Key features include internal soft-start, cycle-by-cycle current limiting, thermal shutdown, and a low-power standby mode for battery conservation.

Special Purpose Regulators Feature Summary

• Integrates dual synchronous switches for high-efficiency buck conversion
• Supports wide input voltage range suitable for single-cell lithium applications
• Includes comprehensive protection mechanisms such as thermal shutdown and current limiting

Special Purpose Regulators Applications

• Portable electronics powered by single-cell lithium-ion batteries
• USB-powered devices requiring regulated low-voltage rails
• Battery-operated handheld instruments and medical devices

Special Purpose Regulators Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm pinout compatibility and temperature grade. Ensure the source document explicitly lists the LM2614ATL variant to avoid confusion with non-synchronous or different package versions. Cross-reference the ordering information with official National Semiconductor or Texas Instruments documentation to validate authenticity and revision status.

Special Purpose Regulators Selection Notes

Select this component when designing compact power supplies for single-cell lithium systems requiring integrated synchronous rectification. The fixed high-frequency operation reduces inductor and capacitor requirements compared to lower-frequency alternatives. Consider the thermal performance of the SOT-23-6 package for the intended load current and ambient conditions.

Special Purpose Regulators Part Context

This part belongs to the LM261x family of switching regulators designed for low-voltage, high-efficiency applications. National Semiconductor was acquired by Texas Instruments, which continues to support and manufacture these legacy power management components. The series is characterized by its simplicity and ability to operate directly from lithium-ion battery sources without additional boost stages.

Special Purpose Regulators Replacement Considerations

LM2614MTCX/NOPB

Special Purpose Regulators FAQ

What is the maximum switching frequency of the LM2614ATL?

The device supports fixed switching frequencies of 1.2MHz and 2.2MHz.

Does the LM2614ATL include internal synchronous rectification?

Yes, it integrates both an N-channel power switch and a P-channel driver switch for synchronous operation.