DP2281 High-Performance Current Mode PWM Controller – SOT23-6 Package

The DP2281 is a highly integrated current mode PWM control IC optimized for high performance, low standby power, and cost-effective offline flyback converter applications. It features a fixed 65kHz switching frequency and operates in extended burst mode at no or light load conditions to minimize switching loss, achieving less than 75mW standby power. The IC offers comprehensive protection coverage with automatic self-recovery features, including cycle-by-cycle current limiting (OCP), overload protection (OLP), on-chip thermal shutdown (OTP), VDD over-voltage protection (OVP), and VDD under-voltage lockout (UVLO). Excellent EMI performance is achieved with frequency shuffling and soft totem-pole gate drive.

Features of DP2281 IC:

1. High integration for cost-effective designs
2. Fixed 65kHz switching frequency
3. Extended burst mode operation for low standby power
4. Comprehensive protection features with auto-recovery
5. Frequency shuffling for improved EMI performance
6. Soft totem-pole gate drive for reduced audio noise
7. SOT23-6 package for compact design

Specifications of DP2281 IC:

• Model: DP2281
• Type: Current Mode PWM Controller
• Switching Frequency: Fixed 65kHz
• Standby Power Consumption: Less than 75mW
• Protection Features: OCP, OLP, OTP, VDD OVP, VDD UVLO
• Gate Drive: Soft totem-pole
• Package: SOT23-6
• Operating Temperature Range: -40°C to +85°C

Applications:

• Offline AC/DC flyback converters
• AC/DC adapters
• Open-frame SMPS

Package Includes:

1 × DP2281 IC – SOT23-6 Package