LT3462AEDC#TRPBF

Overview

The LT3462AEDC#TRPBF is a Cuk topology DC-DC switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 2.5 V to 16 V and provides a negative adjustable output voltage from -1.265 V to -38 V. The device supports an output current of 250 mA and features selectable switching frequencies of 1.2 MHz or 2.7 MHz. It is housed in an 8-WFDFN Exposed Pad package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Implements Cuk topology for efficient step-up/step-down conversion with inverted output polarity
• Features integrated Schottky diode to minimize external component count
• Offers selectable switching frequencies to optimize efficiency and passive size
• Includes shutdown capability for extended battery life in portable applications

Applications

• Portable instrumentation requiring negative supply rails
• Battery-powered systems needing flexible voltage regulation
• Industrial control circuits with wide input voltage ranges
• Communication equipment utilizing compact power management solutions

Procurement Notes

Verify the specific suffix and tape-and-reel packaging details against official Analog Devices documentation before ordering. Confirm that the 8-WFDFN Exposed Pad footprint matches your PCB design constraints. Ensure thermal relief requirements are met for the exposed pad to maintain reliability within the specified operating temperature range.

Selection Notes

Select this component when a negative output voltage is required from a single positive supply source. The Cuk topology provides continuous input and output currents, reducing input ripple compared to inverting buck-boost converters. Choose between 1.2 MHz and 2.7 MHz frequencies based on available inductor sizes and efficiency targets. Verify that the 250 mA output current meets the load requirements.

Part Context

This part belongs to the LT3462 family of inverting DC/DC converters. It shares functional similarities with other members like the LT3462ES6 but differs in package type and temperature rating. The A-grade variant typically offers tighter electrical specifications compared to standard grades. It serves as a compact solution for generating negative voltages in space-constrained designs.

Replacement Considerations

Direct substitutes include other parts from the LT3462 family such as LT3462ES6#TRMPBF, though package and temperature differences exist. Cross-reference pinouts and electrical characteristics carefully. No alternative part numbers are explicitly confirmed as direct replacements in the provided data.