LM2618ATL

Voltage Regulators - DC DC Switching Regulators Overview

The LM2618ATL is a dual synchronous buck DC-DC converter from National Semiconductor, designed for high-efficiency power conversion in portable applications. It integrates two independent step-down regulators within a single compact package. The device operates with an input voltage range supporting various battery-powered systems. Key electrical characteristics include adjustable output voltages and integrated power switches to minimize external component count. The controller utilizes current-mode architecture for fast transient response and inherent line/feedforward compensation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent synchronous buck converters integrated into a single package
• Current-mode control architecture for improved stability and transient response
• Integrated low-resistance power switches reduce external component requirements
• Wide input voltage range suitable for battery-operated devices

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring multiple regulated voltage rails
• Battery-powered handheld devices
• Embedded systems with space-constrained PCB layouts
• Industrial control modules needing efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (ATL) indicates the temperature grade and package type during procurement. Confirm pinout compatibility with existing designs as revisions may occur. Source only from authorized distributors to ensure authenticity. Check datasheet revisions for any updates to absolute maximum ratings or thermal recommendations before finalizing orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are required from a single input source. Evaluate thermal performance based on expected load currents and ambient conditions. Ensure the desired output voltage ranges align with the internal feedback resistor divider capabilities. Consider the switching frequency limitations if EMI filtering is critical for the application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM261x family of dual synchronous buck converters. It shares architectural similarities with other members but differs in package configuration and thermal handling specifications. The ATL variant specifically denotes a thin QFN package optimized for surface-mount assembly. It serves as a solution for reducing board space compared to using two separate single-channel controllers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements must match the dual synchronous buck topology and QFN package. Verify that substitute parts offer comparable current ratings and switching frequencies. Check for pin-to-pin compatibility to avoid PCB redesign. Review datasheets for differences in enable logic or soft-start timing which may affect system startup behavior.