IRS2540SPBF

Overview

The IRS2540SPBF is an LED lighting driver IC manufactured by Infineon Technologies, designed for step-down (buck) DC-DC conversion. It features a half-bridge driver topology with integrated PWM dimming capabilities. The device operates within a supply voltage range of 8 V to 16.6 V and supports an adjustable output voltage. It provides a maximum output current of 500 mA at a switching frequency of 500 kHz. Packaged in an SOIC-8 surface-mount format, it functions reliably across temperatures from -25°C to +125°C with a power dissipation rating of 625 mW.

Feature Summary

• Integrates a buck regulator controller with a high-voltage half-bridge gate driver for efficient LED power management.
• Supports pulse-width modulation (PWM) dimming for precise brightness control applications.
• Features a compact single-channel design suitable for space-constrained LED lighting systems.

Applications

• LED lighting driver circuits
• Buck converter topologies for LED strings
• PWM dimmable lighting fixtures

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance details and moisture sensitivity levels before procurement. Ensure storage conditions meet humidity requirements to prevent package damage during handling and assembly processes.

Selection Notes

Select this component for designs requiring integrated buck regulation and half-bridge driving in a single package. Consider the 500 mA output limit and 500 kHz switching frequency when sizing external passive components. Evaluate thermal performance given the 625 mW power dissipation in the SOIC-8 package for adequate heat sinking strategies.

Part Context

This part belongs to Infineon's LED driver family, specifically combining power stage control with gate drive functionality. It simplifies bill of materials by integrating buck regulation and half-bridge drivers, reducing component count compared to discrete solutions using separate controllers and drivers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative components due to the product's end-of-life status.

FAQ

What is the operating supply voltage range for the IRS2540SPBF?

The device operates with a supply voltage between 8 V and 16.6 V.

Does the IRS2540SPBF support dimming functionality?

Yes, it includes integrated PWM dimming capabilities for controlling LED brightness.