LM3691TL-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3691TL-1.8/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 1.8 V at up to 1 A output 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

• Integrates synchronous rectification for improved efficiency in a compact footprint.
• Features a fixed 1.8 V output configuration optimized for low-voltage digital loads.
• Utilizes a high-frequency 4 MHz switching architecture to minimize passive component size.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems with limited space constraints
• Low-voltage digital circuitry powering

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and tape-and-reel packaging details against the official datasheet before procurement. Confirm that the fixed 1.8 V output aligns with system requirements, as other variants in the LM3691 family offer different voltage options. Ensure compatibility with the 6-DSBGA surface-mount package dimensions during PCB layout planning.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8 V output is required alongside a maximum 1 A load current. The 4 MHz switching frequency makes it suitable for designs prioritizing minimal board space over ultra-low noise performance. Consider the -30°C to +85°C operating range to ensure suitability for the intended environmental conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3691 series of high-accuracy, miniature step-down converters. The series includes various output voltage options such as 0.75 V, 1.0 V, 1.2 V, and 3.3 V, all sharing the same core topology and package. The LM3691TL-1.8/NOPB specifically targets applications needing a stable 1.8 V rail from a single-cell lithium-ion or similar battery source.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Other LM3691 variants like LM3691TLX-0.75/NOPB or LM3691TLX-3.3/NOPB share the same package and functionality but provide different fixed output voltages. Direct substitution requires verifying that the target circuit accepts the alternative voltage level.