LM2660MX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2660MX/NOPB is a switched capacitor voltage converter manufactured by Texas Instruments, designed for applications requiring negative voltage generation or voltage inversion. This component operates as a charge pump regulator with a single output configuration. It supports an input voltage range from 1.5 V to 5.5 V and provides a maximum output current of 100 mA. The device offers flexible output ratios including -Vin, 2Vin, and Vin/2. It features a switching frequency of 40 kHz and includes a shutdown function for power management. The unit is housed in an 8-VSSOP package and is rated for operation between -40°C and +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Inverts input voltage to generate negative outputs using charge pump topology
• Provides multiple fixed output voltage ratios relative to the input supply
• Integrates a shutdown control pin to minimize quiescent current consumption
• Operates within a wide input voltage range suitable for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative supply rails for operational amplifiers
• Powering RS-232 communication interface circuits
• Biasing sensors requiring dual polarity power supplies
• Providing inverted voltage references in mixed-signal systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required package variant, as the MX designation indicates a specific tape and reel packaging format distinct from other housing types. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected part number aligns with the required thermal performance characteristics for the intended operating environment. Cross-reference the datasheet revision history to confirm any recent design changes or material updates that may affect compatibility.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for voltage inversion is required without the complexity of inductive switching regulators. Consider the 100 mA output limit when sizing the external capacitors for the charge pump operation. Evaluate the 40 kHz switching frequency against system noise sensitivity requirements. Compare the VSSOP footprint against available PCB space constraints relative to alternative SOIC packages.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2660 belongs to a family of switched capacitor voltage converters designed for low-power applications. It serves as a cost-effective alternative to inductor-based DC-DC converters for generating negative voltages. The NOPB suffix indicates lead-free construction compliant with environmental standards. This specific model integrates the core charge pump functionality into a small surface-mount package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2660MM/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What are the available output voltage configurations?

The device supports three primary output ratios: -Vin (inversion), 2Vin (doubling), and Vin/2 (halving), depending on the external capacitor connections.

Does the LM2660 support synchronous rectification?

No, the LM2660 utilizes a standard charge pump topology without synchronous rectification capabilities.