BM521Q25F-GE2

Overview

The BM521Q25F-GE2 is an AC/DC controller IC for LED lighting applications, manufactured by ROHM Semiconductor. It integrates a high-voltage 650V MOSFET and a start-up circuit, suitable for quasi-resonant High-side LED drivers. The device operates within a supply voltage range of 8.9 V to 25 V and supports a maximum switching frequency of 300 kHz. It features under-voltage protection, over-voltage latch protection, leading-edge blanking, and open protection functions. The component is housed in an SOP-8 package with dimensions of 5.0x6.2 mm and operates between -40°C and +105°C.

Feature Summary

• Integrates a 650V MOSFET and start-up circuit for space-saving design
• Supports quasi-resonant switching mode combined with PFC circuits
• Provides non-isolated application capability with high-precision LED current control

Applications

• Quasi-resonant High-side LED driver circuits
• LED lighting systems requiring low EMI
• Applications combining Power Factor Correction (PFC) converters

Procurement Notes

Verify the specific suffix GE2 against official datasheets to confirm packaging and RoHS compliance status. Ensure the ordering quantity aligns with the factory reel quantity of 2500 units. Confirm that the application does not involve automotive equipment, as this standard-grade product is explicitly not recommended for such use. Cross-reference the manufacturer part number BM521Q25F-GE2 with authorized distributor listings to validate authenticity and current availability status before procurement.

Selection Notes

Select this component for non-isolated LED lighting designs requiring integrated high-voltage switching capabilities. The built-in 650V MOSFET reduces external component count and simplifies board layout compared to discrete solutions. Consider the SOP-8 package constraints and thermal performance for the target enclosure. Verify that the input voltage range of 8.9 V to 25 V matches the auxiliary power requirements of the control loop.

Part Context

This IC belongs to ROHM's LED Lighting Driver IC category, specifically designed for AC/DC conversion tasks. It is part of a series including models like BM520Q15F, differentiated primarily by voltage ratings and integration levels. The BM521Q25F-GE2 represents a standard-grade solution optimized for cost-effective, compact LED driver implementations in general lighting sectors.

Replacement Considerations

BM521Q25F is listed as an alias for this part number. No other verified substitute part numbers are documented in the provided source material.