LTC3260IDE

Overview

The LTC3260IDE is a low-noise dual polarity output power supply IC from Analog Devices, featuring an inverting charge pump with integrated positive and negative LDO regulators. It operates within a wide input voltage range of 4.5V to 32V and supports switching frequencies between 50kHz and 500kHz. The device provides a single adjustable output capable of up to 100mA current. It is housed in a 16-MSOP-EP package and functions as a PMIC linear/switching regulator.

Feature Summary

• Integrates an inverting charge pump with both positive and negative LDO regulators for dual polarity generation
• Designed for low noise performance in sensitive analog applications
• Supports wide input voltage ranges suitable for various industrial environments

Applications

• Industrial control systems requiring isolated or split supplies
• Sensor interfaces needing stable dual polarity rails
• Data acquisition systems with low noise requirements

Procurement Notes

Verify the specific suffix (e.g., #PBF) against the datasheet to confirm lead-free compliance and package variant. Confirm availability status as distribution channels may list limited stock or end-of-life statuses. Ensure the selected part matches the required thermal pad configuration for proper heat dissipation in the target PCB layout.

Selection Notes

Select this component when a compact solution for generating negative voltages from a positive rail is required without external inductors. Consider the 100mA output limit and the 500kHz maximum switching frequency when designing filter components. Evaluate the thermal performance of the MSOP-EP package against the expected ambient temperature and load conditions.

Part Context

The LTC3260 belongs to Analog Devices' family of charge pump regulators designed for space-constrained designs. Unlike traditional inductor-based converters, this topology eliminates magnetic components, reducing board size and electromagnetic interference. It serves as a specialized PMIC solution for applications needing clean, regulated negative supplies derived from standard positive logic levels.

Replacement Considerations

Check for direct pin-compatible alternatives within the LTC3260 series, such as the LTC3260HMSE#PBF, which shares similar electrical characteristics but may differ in operating temperature range or package tolerance. Verify that any substitute maintains the same inverting charge pump functionality and LDO regulation capabilities.