IRS2505LTRPBF

Overview

The IRS2505LTRPBF is a boost Power Factor Correction (PFC) controller IC manufactured by Infineon Technologies, designed for critical conduction mode (CrM) operation. It integrates a high-voltage startup circuit and a MOSFET gate driver within a compact SOT-23-5 package. The device operates with a VCC range of 9 V to 20.8 V and supports a maximum supply current of 25 mA. Key electrical parameters include a power dissipation rating of 250 mW, an operating supply current of 10 mA, and a quiescent current (Iq) of 60 µA. It functions reliably across a temperature range of -40 °C to +125 °C.

Feature Summary

• Integrates a high-voltage startup circuit enabling simplified design without external bias supplies.
• Operates in critical conduction mode (CrM) to optimize efficiency across varying load conditions.
• Includes an integrated MOSFET gate driver for direct control of external switching elements.

Applications

• Electronic ballasts
• Switched-mode power supplies (SMPS)
• LED lighting drivers

Procurement Notes

Verify the specific suffix LTRPBF against official Infineon documentation to confirm the tape-and-reel packaging configuration and lead-free status. Ensure compatibility with the target PCB footprint for the SOT-23-5 package. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status before finalizing procurement plans.

Selection Notes

Select this component for applications requiring a compact solution for boost PFC circuits in critical conduction mode. The low quiescent current and integrated gate driver make it suitable for cost-sensitive and space-constrained designs. Verify that the input voltage range and thermal requirements align with the system's operational envelope and ambient temperature conditions.

Part Context

This component belongs to the IRS2505L family of PFC controllers from Infineon Technologies. It is specifically engineered for non-isolated boost PFC applications. The LTRPBF designation indicates a specific reel-based packaging variant intended for automated surface-mount assembly processes, distinguishing it from tube or cut-tape variants.

Replacement Considerations

Consult official Infineon substitution guides for verified alternatives. Generic cross-references may not match the specific CrM control logic or pinout configurations. Validate any potential substitute against the original datasheet specifications for electrical performance and thermal characteristics.