LT1614IMS8#PBF

Overview

The LT1614IMS8#PBF is a Cuk switching regulator IC manufactured by Analog Devices Inc., housed in an 8-SOIC package. It operates with a fixed switching frequency of 600kHz and supports an input voltage range from 1V to 6V. The device provides a single negative adjustable output ranging from -1.24V to -24V, delivering up to 750mA switch current. It functions as a boost or buck-boost converter without synchronous rectification and is rated for operation between -40°C and 85°C.

Feature Summary

• Implements Cuk topology for efficient negative voltage generation
• Supports both step-up and step-down conversion modes
• Features integrated soft-start functionality

Applications

• Negative power supply generation for operational amplifiers
• Interface circuits requiring dual polarity supplies
• Portable instrumentation powered by single low-voltage sources

Procurement Notes

Verify the specific suffix IMS8#PBF against official Analog Devices documentation to confirm industrial temperature rating and lead-free compliance. Ensure the ordering part number matches the required package width and marking specifications before finalizing procurement orders.

Selection Notes

Select this component when a negative output voltage is required from a low-voltage positive source. The Cuk topology offers continuous input and output currents, which reduces input and output filtering requirements compared to other topologies. Verify that the 750mA internal switch current meets the load requirements.

Part Context

This part belongs to the LT1614 family of Cuk regulators designed for applications needing negative voltages. It complements other Analog Devices PMIC solutions by providing a compact, high-efficiency method for generating negative rails from standard positive supply lines in space-constrained designs.

Replacement Considerations

LT1614IS8#PBF: Identical electrical performance with commercial temperature range instead of industrial.