LM3686TLE-AAED/NOPB

Overview

The LM3686TLE-AAED/NOPB is a dual-output step-down DC-DC converter manufactured by Texas Instruments, operating within an input voltage range of 2.7 V to 5.5 V. It provides two independent output channels with adjustable voltages between 1.2 V and 2.5 V, delivering up to 600 mA per channel. The device utilizes a fixed 3 MHz switching frequency to minimize external component size. Key electrical specifications include a quiescent current of 70 µA and operation across a temperature range from -30°C to +85°C. It is housed in a DSBGA-12 package.

Feature Summary

• Dual-output buck topology for simultaneous power rail generation
• High-frequency switching reduces passive component footprint
• Low quiescent current consumption for efficiency optimization

Applications

• Portable electronic devices requiring multiple low-voltage rails
• Battery-powered systems with limited input voltage headroom
• Embedded applications needing compact power management solutions

Procurement Notes

Verify the specific suffix AAED against official datasheets to confirm pinout and internal configuration differences compared to standard variants. Ensure compatibility with the target PCB layout for the DSBGA-12 package. Confirm RoHS compliance status through manufacturer documentation before integration into regulated assemblies.

Selection Notes

Select this component when dual isolated outputs are required from a single input source within a narrow voltage window. The 3 MHz frequency suits designs prioritizing small inductor size over maximum efficiency at light loads. Evaluate thermal performance requirements given the small package size and potential for concurrent high-current draw on both channels.

Part Context

This part belongs to the LM3686 series of dual-output synchronous buck converters. It is produced by Texas Instruments following their acquisition of National Semiconductor components. The device integrates power switches and control logic to simplify design while maintaining high efficiency in space-constrained mobile applications.

Replacement Considerations

Direct substitutes may include other dual-output buck converters from Texas Instruments or Analog Devices with similar input ranges and current capabilities. Verify pin-to-pin compatibility and thermal characteristics before substitution.