LM3691TL-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3691TL-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 a fixed output voltage of 3.3 V at up to 1 A load current. The device utilizes a 4 MHz switching frequency to enable the use of small external components. It is housed in a 6-pin DSBGA package measuring 1.5 x 1.3 mm. The operational temperature range extends from -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology ensures high conversion efficiency across varying load conditions.
• Fixed 3.3 V output provides precise regulation suitable for sensitive digital loads.
• High 4 MHz switching frequency allows for significant reduction in passive component size.
• Compact 6-DSBGA package minimizes printed circuit board area requirements.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems with limited space constraints
• Digital logic circuits needing stable 3.3 V supply rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to confirm the fixed 3.3 V output variant. Ensure the ordering part number matches the required package type and temperature rating. Cross-reference the component status to determine availability, as production lifecycles may affect sourcing options for this specific revision.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required without external feedback resistors. The choice is driven by the need for a compact solution in space-constrained portable designs. Consider the 4 MHz frequency for minimizing inductor size compared to lower-frequency alternatives. Validate that the input voltage range aligns with the system's battery or supply characteristics.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3691 series of high-accuracy, miniature step-down converters. The series offers various fixed output voltage options to suit different application needs while maintaining a consistent footprint and performance profile. It is categorized under Power Management ICs (PMIC) within the broader portfolio of Texas Instruments' analog and embedded processing products.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the manufacturer's selection guide for alternative fixed-output variants within the same family. Verify pin compatibility and thermal characteristics before substituting with other models. Ensure any replacement maintains the required 3.3 V output specification and package dimensions.