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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 8DIP
- Series：-
- Mfr：Infineon Technologies
- Package：Tube
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：9V
- Voltage - Supply (Max)：15.6V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：500kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-25°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The IRS2540PBF is a DC-DC controller designed for LED driving applications, utilizing a step-down (buck) topology. It operates at a fixed switching frequency of 500 kHz and supports an input voltage range from 8 V to 16.6 V. The device provides one adjustable output channel with a maximum output current capability of 500 mA. It features PWM dimming functionality and is housed in an 8-pin PDIP package. The component functions within a temperature range of -25°C to +125°C and has a maximum power dissipation of 625 mW.
Feature Summary
- Integrated half-bridge driver for high-side and low-side MOSFET control
- Supports pulse-width modulation (PWM) dimming for brightness control
- Fixed 500 kHz switching frequency for efficient power conversion
- Adjustable output voltage regulation for flexible LED string configurations
Applications
- LED lighting driver circuits
- Buck converter topologies for constant current LED loads
- General-purpose DC-DC control applications requiring half-bridge drive
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix PBF indicates lead-free packaging. Check current manufacturing status as this model may be obsolete; validate availability of equivalent active parts if long-term supply is required. Ensure storage conditions comply with moisture sensitivity levels specified in the datasheet.
Selection Notes
Select this component for designs requiring a dedicated buck regulator controller with integrated gate drivers. Ensure the application input voltage remains within the 8 V to 16.6 V range. Verify that the required output current does not exceed 500 mA. Consider the 8-pin PDIP package constraints for PCB layout and thermal management relative to the 625 mW power dissipation limit.
Part Context
This part belongs to Infineon's LED lighting driver IC family, specifically designed for buck converter applications. It integrates a half-bridge driver to simplify external component count by eliminating the need for separate logic-level translation or bootstrap circuitry in many standard configurations. The series focuses on cost-effective solutions for general illumination.
Replacement Considerations
The IRS25411STRPBF is listed as a similar substitute option. Verify pin compatibility and electrical specifications before substitution. Note that the IRS2540PBF is marked as obsolete by major distributors.
