OB2276 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications.
Features:
◆ Power on Soft Start Reducing MOSFET Vds Stress ◆ Frequency shuffling for EMI ◆ Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design ◆ Audio Noise Free Operation ◆ Fixed 65KHZ Switching Frequency ◆ Comprehensive Protection Coverage ◇ VDD Under Voltage Lockout with Hysteresis (UVLO) ◇ Cycle-by-cycle over current threshold setting for constant output power limiting over universal input voltage range ◇ Overload Protection (OLP) with auto-recovery ◇ Brownout Protection with auto-recovery ◇ Fixed VDD OVP with latch shut down ◇ Adjustable VDD OVP with latch shut down ◇ Over Temperature Protection with latch shut down ◇ Output Over Voltage Protection with latch shut down ◆ Available in SOP8 packages, RoHS compliant
Applications:
Offline AC/DC flyback converter for ◆ Battery Charger ◆ Power Adapter ◆ Set-Top Box Power Supplies ◆ Open-frame SMPS
Device | VDD OVP | OTP | Load OVP | OB2276 | Latch | Latch | Latch | OB2276A | Auto-recovery | Auto-recovery | Auto-recovery |
Typical Application:
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