LM2687MM

Voltage Regulators - DC DC Switching Regulators Overview

The LM2687MM is a negative adjustable charge pump switching regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.7V to 5.5V and provides a single adjustable output ranging from -1.5V to -5.2V with a maximum output current of 10mA. The device utilizes a fixed switching frequency of 110kHz and features synchronous rectification absence, relying on standard charge pump topology for step-down conversion. It is housed in an 8-VSSOP surface-mount package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides negative voltage generation via charge pump topology
• Features adjustable output voltage capability
• Designed for low-power applications requiring small form factor

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring negative supply rails
• Battery-powered systems needing voltage inversion
• Low-power analog circuit biasing

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component status as the LM2687MMX variant is listed as obsolete. Confirm availability of alternative packages or updated series components from Texas Instruments. Ensure sourcing channels provide genuine parts with appropriate traceability documentation given the end-of-life status.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact negative voltage source is required for low-current loads under 10mA. Consider the 8-VSSOP package constraints for PCB layout. Evaluate if the fixed 110kHz frequency meets EMI requirements for the specific application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2687 belongs to Texas Instruments' portfolio of power management integrated circuits focused on DC-DC conversion. This specific model addresses niche requirements for generating negative voltages from single positive supplies in space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the LM2687 family or newer generations of negative charge pumps from Texas Instruments that maintain similar electrical specifications and package dimensions.