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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 8SO
- Series：-
- Mfr：International Rectifier
- Package：Bulk
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：8V
- Voltage - Supply (Max)：16.6V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：500kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-25°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The IRS25401STRPBF is a high-voltage, high-frequency buck control IC designed for constant LED current regulation. It incorporates a continuous mode time-delayed hysteretic buck regulator to directly control average load current using an accurate on-chip bandgap voltage reference. The device features a 200 V half-bridge driver and supports switching frequencies up to 500 kHz. It operates with a micropower startup current of less than 500 μA and includes a ±2% voltage reference. The component is housed in an 8-Lead SOIC package.
Feature Summary
- Integrates a 200 V half-bridge driver with a continuous mode time-delayed hysteretic buck regulator for direct average load current control.
- Supports PWM dimming capabilities and features auto-restart with non-latched shutdown protection.
- Includes a 140 ns deadtime and a 15.6 V zener clamp on the VCC pin for enhanced operational stability.
Applications
- LED drivers for lamp replacement
- LED driver back end current regulator
Procurement Notes
Verify the specific suffix STRPBF indicates tape and reel packaging when sourcing. Confirm RoHS compliance status as per the manufacturer's latest documentation. Ensure the 8-SOIC package dimensions match the target PCB footprint requirements before finalizing procurement orders.
Selection Notes
Select this component for applications requiring a 200 V rating and high-frequency operation up to 500 kHz. It serves as an improved replacement for the IRS2540 and IRS2541, offering better latch-up immunity. Consider the micropower startup requirement if battery efficiency or low quiescent current is critical.
Part Context
This part belongs to the IRS254 series of high-voltage buck control ICs manufactured by International Rectifier, now part of Infineon Technologies. The series is specifically engineered for driving LEDs with constant current regulation. The IRS25401 variant is distinguished by its 200 V half-bridge driver capability, differentiating it from the 600 V rated IRS25411.
Replacement Considerations
The datasheet explicitly states that these parts directly replace the IRS2540 and IRS2541 models while providing improved latch-up immunity. No other substitute part numbers are confirmed in the provided public documentation.
