BM1Q021AFJ-LBE2

BM1Q021AFJ-LBE2 is a quasi-resonant DC/DC converter. This quasi-resonant controller type DC/DC converter IC provides the optimal system for products with electrical outlets. The switching MOSFET and current sensing resistor are external, allowing for highly flexible power supply designs. This IC has a built-in starter circuit that contributes to low standby power and high-speed startup. When the IC is light-loaded, the standby power is reduced due to the built-in burst operation function and the lower current consumption of the IC. It also has a variety of built-in protection functions such as soft start function, burst function, over-current protection per cycle, over-voltage protection, overload protection, and built-in CS pin open protection, providing excellent safety. Applications include industrial equipment, products that require electrical outlets, such as air conditioners, AC adapters, and TVs.

• Long time support product for industrial applications, quasi-resonant system
• Built-in 650V tolerate starter circuit
• AC input voltage correction circuit, over current protection circuit per cycle
• VCC pin under voltage protection, VCC pin over voltage protection
• Output driver 12V clamp circuit, soft start function, 600μA typ current at switching operation
• ZT pin trigger mask function, ZT pin over voltage protection, 350μA typ current at burst operation
• Output overload protection (auto restart), CS pin open protection circuit (auto restart)
• Auto restart VCC OVP, auto restart ZT OVP, 8.9V to 26.0V VCC supply voltage
• Maximum operating frequency is 120KHz typ at (FB pin voltage = 2.0V)
• Operate temperature range from -40°C to +105°C, SOP-J7S package