LT3571EUD#PBF

Overview

The LT3571EUD#PBF is a high-voltage DC/DC boost converter manufactured by Analog Devices Inc. It operates from an input voltage range of 2.7V to 60V and delivers up to 100mA output current. The device integrates a 75V N-channel power switch and supports switching frequencies up to 1.2MHz. It features adjustable frequency, cycle-by-cycle current limiting, and a shutdown pin for low quiescent current consumption. The component is housed in a thermally enhanced 10-lead DFN package.

Feature Summary

• Integrates a high-voltage 75V N-channel power switch for compact boost converter designs
• Supports wide input voltage ranges suitable for single-cell lithium or multi-cell battery applications
• Includes programmable switching frequency and cycle-by-cycle current limit protection
• Features a shutdown control pin to minimize quiescent current during standby modes

Applications

• Avalanche photodiode (APD) bias supply generation
• High-voltage LED driver circuits
• Battery-powered instrumentation requiring elevated rail voltages
• Industrial sensor interface power supplies

Procurement Notes

Verify the specific suffix EUD against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with required thermal management solutions due to the DFN form factor. Cross-reference datasheet revisions to confirm pinout consistency before finalizing procurement orders.

Selection Notes

Select this component when designing boost converters requiring input voltages up to 60V and output currents around 100mA. Consider the integrated 75V switch rating relative to the desired output voltage headroom. Evaluate thermal performance requirements based on the selected switching frequency and load conditions within the specified operating temperature range.

Part Context

The LT3571 belongs to Analog Devices' family of high-voltage switching regulators designed for space-constrained applications. It complements other boost controllers by offering an integrated power switch, reducing external component count. This series targets applications needing reliable high-voltage generation from low-voltage sources without complex gate drive circuitry.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may lack the specific 75V switch rating or thermal characteristics. Verify that any substitute maintains compatible pinouts and control logic if direct footprint replacement is required.