LTC1550LCS8#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC1550LCS8#PBF is a switched capacitor charge pump voltage inverter manufactured by Analog Devices. It features an internal linear post-regulator designed to minimize output ripple, achieving typical noise levels below 1mVP-P. The device provides a fixed -2V output with a maximum output current of 20mA. It operates from a DC input voltage range up to 3.6V and is housed in an 8-pin MSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a switched capacitor charge pump topology for efficient voltage inversion
• Includes an internal linear post-regulator stage to suppress output ripple
• Delivers a fixed negative output voltage suitable for low-noise biasing applications

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative bias voltages for operational amplifiers
• Powering analog-to-digital converter reference inputs
• Providing dual-supply rails for single-supply sensor interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence when sourcing. Confirm the MSOP-8 package dimensions match your PCB footprint requirements. Ensure the input voltage supply remains within the specified operational limits to maintain regulation stability. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates prior to final procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for generating a stable negative rail from a positive source. The integrated linear regulator makes it suitable for sensitive analog circuits requiring low noise. Consider the 20mA output current limit against the total load requirement. Evaluate the trade-off between external capacitor size and ripple performance based on the application's power constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC1550L family of charge pump inverters. Variants in this series offer different fixed output voltages such as -4V and -2.5V. The 'L' designation typically denotes the low-noise version with the internal linear post-regulator, distinguishing it from standard charge pumps that may exhibit higher ripple without additional filtering.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LTC1550L variants with matching -2V output if available. Verify pin compatibility and thermal characteristics before replacing with generic charge pump ICs. Ensure alternative components meet the same low-noise specifications if used in sensitive analog signal paths.