General Description

The AC/DC quasi-resonant controller type LED driver IC BM520Q15F can be applied to a non-isolated application, making the designs for various types of low power converter easy.

The low power consumption and high-speed start are achieved through the start-up circuit with 650V withstand voltage.

Due to the quasi-resonant mode, soft switching is achieved. The EMI is also improved by the alterable operating frequency. A power supply design with a high degree of freedom can also be achieved by the external current setting resistance.

A low-cost application can be achieved with the built-in MOSFET with 650V withstand voltage. It also makes the application design easy.

Features

■ Quasi-resonant Switching Mode

■ Built-in 650V Starter Circuit

■ Built-in 650V Switching MOSFET

■ Maximum Frequency of 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)

Application

LED bulb, sealed-type LED lighting

Electrical machineries for LED lighting