LTC3260IMSE#TRPBF

Overview

The LTC3260IMSE#TRPBF is a dual charge pump DC/DC converter manufactured by Analog Devices Inc., designed for generating positive and negative output voltages from a single input supply. It operates within an input voltage range of 4.5V to 32V and delivers up to 100mA per channel with adjustable output voltages. The device supports switching frequencies between 50kHz and 500kHz, ensuring efficient power conversion across various load conditions. Packaged in a 16-lead MSOP with exposed pad (MSOP-EP) for enhanced thermal performance, it functions reliably over an extended temperature range from -40°C to +125°C junction temperature. This component integrates precision control circuitry to maintain stable regulation without requiring external feedback resistors for basic operation, making it suitable for compact power management solutions.

Feature Summary

• Dual independent charge pump topology capable of simultaneous positive and negative voltage generation
• Integrated frequency synchronization and adjustment capabilities for noise management
• Compact surface-mount packaging optimized for thermal dissipation and space-constrained designs

Applications

• Biasing operational amplifiers requiring split power supplies
• Powering RS-232 transceivers and interface circuits
• Providing gate drive voltages for high-side MOSFETs
• Supplying negative rails for sensor signal conditioning

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging with lead-free finish before ordering. Confirm the IMSE variant matches the required industrial temperature grade and package outline dimensions against your PCB footprint. Ensure compatibility with your system's input voltage range and current demands. Cross-reference the manufacturer's latest datasheet revision to confirm pinout integrity and electrical specifications have not changed since previous design iterations.

Selection Notes

Select this component when dual isolated or non-isolated inverted outputs are needed from a single rail. Consider the 100mA output limit per channel against total system load requirements. Evaluate the 50kHz to 500kHz frequency range against EMI constraints and inductor/capacitor size trade-offs. The MSOP-EP package requires careful thermal analysis due to the exposed pad connection to ground plane for heat sinking.

Part Context

This part belongs to the LTC3260 family of dual charge pump regulators. It shares core architecture with variants like the LTC3260HMSE#PBF but differs in temperature rating and packaging format. The IMSE designation specifies the industrial temperature range and MSOP-EP package style. It complements other Analog Devices PMIC solutions by providing simple, low-component-count voltage inversion without the complexity of inductive buck converters.

Replacement Considerations

The LTC3260HMSE#PBF serves as a direct functional substitute with identical electrical characteristics but may differ in temperature rating or packaging quantity. Verify that any replacement maintains the same 16-MSOP-EP footprint and pin configuration to ensure mechanical compatibility.