LM2687MMX

Voltage Regulators - DC DC Switching Regulators Overview

The LM2687MMX is a negative adjustable charge pump switching regulator manufactured by Texas Instruments. It provides an output voltage range from -1.5V to -5.2V with a maximum output current of 10mA. The device operates on a single input supply ranging from 2.7V to 5.5V and features a fixed switching frequency of 110kHz. It utilizes an 8-VSSOP surface-mount package and supports an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides negative voltage generation using a charge pump topology
• Features fully adjustable output voltage capability
• Operates efficiently at a fixed 110kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative supply rails for operational amplifiers
• Powering RS-232 communication interface circuits
• Biasing analog signal processing components requiring dual supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component status carefully as the LM2687MMX is listed as obsolete in public records. Confirm availability through authorized distributors or secondary markets, noting that standard packaging quantities may apply. Ensure the specific 8-VSSOP package variant matches design requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for generating low-current negative voltages is required. It is suitable for applications needing a simple charge pump architecture rather than complex inductor-based converters. Consider the 10mA current limit and 110kHz frequency when evaluating noise and power constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2687 family of negative voltage generators. It serves as a specialized power management IC designed to create inverted polarity outputs from positive single-supply sources. The MMX suffix indicates the specific 8-VSSOP surface-mount package configuration used for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public documentation confirms the LM2687MMX is obsolete. Engineers should evaluate alternative negative voltage generator ICs from Texas Instruments or other manufacturers that offer similar charge pump functionality and current capabilities.