Features

• Absolute Maximum Ratings ⎯ Supply voltage Vcc: 24 V ⎯ Junction temperature Tj: –40 to +150°C

• Electrical characteristics

⎯ UVLO operation start voltage VH: 9.5 V ± 0.7 V

⎯ UVLO operation shutdown voltage VL: 8.5 V ± 0.4 V

⎯ UVLO hysteresis voltage Hysuvl: 1.0 V ± 0.4 V

• Functions

⎯ Boost converter control with critical conduction mode

⎯ Two mode overvoltage protection and OVP2 Mode

1: Dynamic OVP corresponding to a voltage rise by load change Mode

2: Static OVP corresponding to overvoltage in stable.

OVP2: OVP2 senses the PFC output voltage by independence pin.

⎯ Feedback loop, open detection

⎯ Overcurrent protection

⎯ Dynamic UVP corresponding to a voltage fall by load change

⎯ Frequency limiter, adjustable

⎯ Zero Current Detect (ZCD) delay time, adjustable

⎯ CS pin's open detection ⎯ Package lineup: Pb-free SOP-8 (JEDEC)