LM3691TLX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3691TLX-3.3/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, designed for portable applications requiring high accuracy and miniature form factors. It operates within an input voltage range of 2.3 V to 5.5 V and delivers up to 1 A of output current. The device features a fixed 3.3 V output and utilizes a 4 MHz switching frequency to minimize external component size. It is housed in a 6-pin DSBGA package (1.5x1.3 mm) and functions reliably across an operating temperature range of -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology ensures high efficiency during power conversion.
• Miniature 6-DSBGA package supports space-constrained portable designs.
• High switching frequency allows for the use of small passive components.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices
• Battery-powered systems
• Space-limited circuit boards

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and manufacturer details against official datasheets before integration. Confirm that the 6-DSBGA package dimensions align with your PCB footprint requirements. Ensure the fixed 3.3V output meets your system's voltage rail specifications. Check for any obsolescence notices or lifecycle status updates from Texas Instruments prior to finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down voltages between 2.3 V and 5.5 V to a stable 3.3 V rail. The 1 A current capability suits moderate load applications in portable gear. Consider the 4 MHz frequency trade-off between component size and electromagnetic interference. Verify thermal performance within the specified -30°C to +85°C operational window for your intended environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3691 series of high-accuracy, miniature step-down converters. It shares architectural similarities with other variants like the LM3691TLX-0.75/NOPB but differs in its fixed output voltage configuration. The series is engineered for applications where board space and power efficiency are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM3691 variants with different fixed output voltages, such as LM3691TLX-1.8/NOPB or LM3691TLX-1.0/NOPB, provided the system voltage requirements are adjusted accordingly. Cross-reference pinouts and thermal characteristics to ensure compatibility.