MX1210H

MX1210H is a highly integrated current mode PWM controller, optimized for high performance, low standby power consumption and wide output voltage range charger and adapter solutions. The circuit is as well compatible with cost effective offline flyback converter applications covering a wide output range. At full loading, the IC operates in fixed frequency mode. When the loading goes low, it operates in Green mode with valley switching for high power conversion efficiency can be achieved in the whole loading range. MX1210H offers complete protection coverage including cycle-by-cycle current limiting (OCP), overload protection (OLP), over temperature protection (OTP), output short current protection (SCP), output and VDD over voltage protection (OVP & VDD OVP). Excellent EMI performance is achieved with MAXIN proprietary frequency shuffling technique. The tone energy at below 22kHz is minimized to avoid audio noise during operation. MX1210H is offered in SOT23-6 package.

Applications

• Battery chargers
• PD adapters
• Wide output range adapters
• Set-Top Box power supply

Key features

• Multi-Mode Operation: 100kHz fixed frequency mode @ Full Load
• Valley switching operation @ Green mode
• Burst Mode @ Light Load and No Load
• Adaptive loop gain compensation with Iovp current detection
• Ultra low operation current at light and no load
• Internal OCP compensation for universal line voltage
• Extend burst mode control for improved efficiency and low standby power
• Power on soft start reducing MOSFET VDS stress
• Frequency shuffling for EMI
• Audio noise free operation
• Comprehensive protection coverage:
• VDD under voltage lockout with hysteresis (UVLO)
• Cycle-by-cycle over current protection (OCP) with auto recovery
• External over temperature protection (EXT_OTP)
• VDD over voltage protection
• Output over voltage protection
• Output short current protection (SCP) with auto recovery
• Brownout protection with auto recovery
• Output diode short protection with auto recovery