LM3686TLX-AAEF/NOPB

Overview

The LM3686TLX-AAEF/NOPB is a Texas Instruments switching voltage regulator featuring a step-down DC-DC converter with integrated post linear regulators. It utilizes a Buck topology in a 12-DSBGA package. The device provides dual outputs with an adjustable range of 1.2 V to 2.5 V and supports up to 600 mA output current. Operating at a fixed switch frequency of 3 MHz, it functions within a temperature range of -30°C to +85°C. Quiescent current is specified at 70 µA.

Feature Summary

• Integrates a synchronous buck converter with dedicated low-noise linear regulators for clean power delivery.
• Features a compact 12-pin DSBGA surface-mount package suitable for space-constrained designs.
• Supports high-frequency operation to minimize external passive component size.

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• Systems needing low-noise power for sensitive analog circuits
• Battery-powered applications utilizing efficient step-down conversion

Procurement Notes

Verify the specific suffix AAEF against the official datasheet to confirm the integrated regulator configuration and pinout compatibility. Ensure the 12-DSBGA footprint matches the PCB layout requirements. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement specifications.

Selection Notes

Select this component when a combined switching and linear regulation solution is required to reduce board space. The 3 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 600 mA load requirement fits within the thermal limits of the DSBGA package for the intended operating environment.

Part Context

This part belongs to the LM3686 series from Texas Instruments, categorized under PMIC voltage regulators. It is designed as a system-level power management solution, combining efficiency with noise-sensitive regulation capabilities in a single small form factor package.

Replacement Considerations

Check the LM3686TLE-AADW/NOPB for similar buck converter functionality, though it lacks the integrated post-linear regulators found in the AAEF variant. Verify package and electrical parameter compatibility before substitution.