The 0B2277 is a highly integrated current mode PWM control IC optimized for high performance, low standby power, and cost-effective offline flyback converter applications. The 0B2277 provides a complete range of auto-recovery protections, including cycle-by-cycle current limit (0CP), overload protection (OLP), brownout protection, output diode short protection, ground pin open protection, and VDD under voltage lockout (UVLO). It also provides VDD overvoltage protection (OVP) with the latched shutdown.

Product features:

• Standby power < 100mW at universal AC input

• Power-on soft-start reduces MOSFET Vds stress

• EMI frequency shuffling

• Extended burst-mode control for improved efficiency and minimal standby power design

• Audible Noise-Free Operation - Minimizes audible noise from universal AC input with line compensation

• Forced pulse generation

• Fixed 65KHz (typ) switching frequency

• Comprehensive coverage

1) VDD under voltage lockout (UVLO) with hysteresis

2) Cycle-by-cycle overcurrent protection

3) Overload Protection (OLP) with automatic recovery function

4) Power failure protection with automatic recovery function

5) Output diode short circuit protection with automatic recovery function

6) Ground pin open circuit protection with automatic recovery function

7) VDD Over Voltage Protection (OVP) with Latch Shutdown

8) CS pin floating protection