AC/DC controller IC for LED lighting Included 650V MOSFET - BM521Q25F (New)

BM521Q25F is an AC/DC converter for LED lighting, which has a built-in MOSFET with 650V withstand voltage. This IC can be applied to quasi-resonant typed High-side LED driver application, and the high current precision and Low EMI noise can be achieved. Moreover, owing to the built-in PFC (Power Factor Correction) converter, the harmonics is improved. Owing to the start-up circuit with 650V withstand voltage, the low power consumption is achieved. And owing to the external current setting resistance, a power supply design with a high degree of freedom can be achieved. Owing to the built-in start-up circuit and MOSFET with 650V withstand voltage, a compact application can be designed easily, and the low-cost can be achieved with the small BOM size.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BM521Q25F-GE2 Active SOP8 2500 2500 Taping Yes
Vin(Min.)[V] 8.9
Vin(Max.)[V] 25.0
Frequency(Max.)[MHz] 0.3
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
    • Quasi-resonant Switching Mode + PFC Circuit
    • Non-isolated Application
    • Built-in 650V Start-up Circuit
    • Built-in 650V Switching MOSFET
    • Maximum Frequency 300kHz
    • VCC Pin: Under Voltage Protection
    • VCC Pin: Over Voltage Protection (Latch)
    • SOURCE Pin: Leading-Edge-Blanking Function
    • SOURCE Pin: OPEN Protection Function
    • LED Over Current Detection Function
ROHM Semiconductor reserves the right to change the specifications at any time.
Technical Data
Application Note

Thermal Resistance