LM2660MMX

Voltage Regulators - DC DC Switching Regulators Overview

The LM2660MMX is a monolithic DC-DC converter from Texas Instruments, designed to generate negative output voltages from positive input supplies. It operates as an inverting charge pump with an integrated switching regulator architecture. The device accepts input voltages ranging from 2.7V to 12V and can deliver output currents up to 150mA. It features a fixed internal switching frequency of 1.2MHz, enabling the use of small external capacitors. The MMX package is a thin shrink small-outline package (TSOP) with 8 pins, suitable for space-constrained portable applications requiring efficient voltage inversion.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-efficiency inverting charge pump topology
• Fixed 1.2MHz switching frequency for compact passive component size
• Wide input voltage range supporting various single-supply systems
• Thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Portable communication devices requiring dual polarity supplies
• LCD bias voltage generation in handheld instruments
• Op-amp supply rails in battery-powered instrumentation
• RS-232 interface circuits needing negative voltage levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MMX' corresponds to the tape-and-reel packaging format and temperature grade as defined in the official datasheet. Confirm that the ordering part number matches the exact pin configuration and electrical specifications required for your design. Cross-reference the manufacturer's latest documentation to ensure compliance with current RoHS directives and material declarations before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for generating negative voltage from a positive source is required. It is appropriate for designs where board space is limited due to its high-frequency operation allowing smaller capacitors. Ensure the load current does not exceed 150mA and that the input voltage remains within the 2.7V to 12V range. Consider thermal performance if operating near maximum current limits or high ambient temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2660 belongs to Texas Instruments' family of low-power DC-DC converters. It is specifically engineered for inverting power supply applications. The MMX variant denotes the specific surface-mount package type. This component serves as a direct replacement for older discrete charge pump solutions, offering improved efficiency and reduced component count in modern portable electronics designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM2660 variants with different package codes such as MSOP or SOIC if physical footprint changes are acceptable. Verify functional compatibility regarding pinout and electrical parameters before substituting. Ensure any alternative part supports the same 1.2MHz frequency and input voltage range to maintain circuit stability.