ROHM BM520Q19F

Description

The quasi-resonant controller typed LED driver IC BM520Q19F for AC/DC can be applied to a non-isolated application, and make the designs forvarious types of low power convertor easily. Owing to the start-up circuit with 650V withstand voltage, the low power consumption and high-speedstart are achieved. Owing to the quasi-resonant mode, the softswitching is achieved, and by the alterable operating frequency, the EMI is also improved. And owing to the external current setting resistance, a power supply design with a high degree of freedom can be achieved.With the built-in MOSFET with 650V withstand voltage, a low-cost application can be achieved, and it makes the application design easily.

Features

• Quasi-resonant switching mode
• Built-in 650V starter circuit
• Built-in 650V switching MOSFET
• Maximum frequency 200kHz
• VCC pin: under voltage protection
• VCC pin: over voltage protection (latch)
• SOURCE pin: Leading-Edge-Blanking function
• ZT pin: trigger mask function
• ZT pin: over voltage protection (latch)
• NTC pin: temperature detecting protection (automatic recovery)

Typical applications

• LED bulb, sealed-type LED lighting
• Electrical machineries for LED lighting

More information

• Datasheet
• IC product information