MX1210R

MX1210R is a highly integrated current-mode PWM controller optimized for high-performance, low standby power, and wide output voltage range PD adapter solutions. The device is also compatible with cost-effective offline flyback converter applications featuring wide output ranges. At full load, the controller operates in fixed-frequency mode. As the load decreases, it enters green-mode operation, achieving high power conversion efficiency across the entire load range. The MX1210R provides comprehensive protection features, including cycle-by-cycle current limiting, overload protection, over-temperature protection, and VDD overvoltage protection. Excellent EMI performance is achieved through proprietary frequency dithering technology. Audio energy below 22kHz is minimized to avoid audible noise during operation. The MX1210R is available in a SOT23-6 package.

Applications

• Battery chargers
• PD adapters
• Wide output range adapters
• Set-top box power supplies

Key features

• Multi-mode operation: fixed frequency 65kHz mode at full load; green mode at medium and light load; burst mode at light load and no load
• Adaptive loop gain compensation with Iovp current sensing
• Ultra-low operating current at light load and no load
• Internal OCP compensation for universal line voltage input
• Extended burst mode control for improved efficiency and reduced standby power
• Power-on soft start to reduce MOSFET VDS stress
• Built-in leading edge blanking
• Frequency jitter for improved EMI
• Audio noise-free operation
• Comprehensive protection coverage: VDD UVLO with hysteresis, cycle-by-cycle OCP with auto-recovery, external OTP, overload protection, VDD OVP