LM2681M6X/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2681M6X/NOPB is a fixed-ratio charge pump DC-DC switch regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.5V to 5.5V and provides a single positive output configured for either 2Vin or Vin/2 ratios. The device delivers up to 20mA of output current with a switching frequency of 80kHz. It is housed in a compact SOT-23-6 surface-mount package and supports an operating junction temperature range from -40°C to 85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed-ratio charge pump topology providing precise voltage scaling without external inductors
• Single positive output configuration supporting dual ratio options
• Compact SOT-23-6 surface-mount packaging for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring voltage inversion or doubling
• Low-power systems needing isolated or shifted supply rails
• Interface circuits requiring level shifting between logic domains

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix /NOPB to confirm lead-free and RoHS compliance status. Ensure the specific package variant matches the required footprint, as ordering suffixes may indicate different tape-and-reel quantities or manufacturing sites. Cross-reference the manufacturer datasheet revision history for any pinout or electrical characteristic updates prior to final design implementation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a simple, inductor-less solution is required for moderate current applications up to 20mA. The fixed-ratio operation simplifies design compared to adjustable regulators but limits flexibility. Evaluate the 80kHz switching frequency against electromagnetic interference requirements and ensure the input voltage range aligns with the system's power source characteristics.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2681 family of charge pump regulators from Texas Instruments. It is designed for low-cost, low-component-count applications where efficiency is secondary to simplicity and size. The NOPB suffix indicates a non-phosphorus lead-free version compliant with environmental directives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.