FM3773GA
product description
FM3773GA, FM3773GB, FM3773GC are high-performance power controllers for battery chargers and adapters, with built-in 850V power transistors. The chip uses pulse frequency modulation (PFM) to establish a discontinuous conduction mode (DCM) flyback power supply.
FM3773GA, FM3773GB, FM3773GC provide precise constant voltage, constant current (CV / CC) does not require optocoupler and secondary control circuit adjustment. Eliminates the need for loop compensation circuits while maintaining good stability. FM3773GA, FM3773GB, FM3773GC can achieve good linear regulation and load regulation, as well as higher average efficiency, meeting no-load power consumption of less than 75mW@230V.
FM3773GA, FM3773GB, FM3773GC have a proprietary output cable voltage drop compensation function, that is, output line loss compensation. The line loss compensation value can be adjusted, which can effectively compensate the loss and voltage drop of the output current on the output line.
main feature
• Integrated high-power MOSFET tube
• Primary-side feedback control, high-precision constant current and constant voltage
• Less than 75mW@230V standby power consumption
• Built-in line loss compensation
• Adjustable DC line loss compensation under constant current changes
• Random frequency jitter modulation reduces system electromagnetic interference
• Open circuit protection
• Overvoltage protection
• Short circuit protection
• Over temperature protection
• Package form: SOP-7
Scope of application
• Adapters and battery chargers for mobile phones, cordless phones, PDAs, MP3 and other portable devices.
• LED drive current
• The best choice for linear power supply and RCC switching power supply upgrade
• Backup power supply, etc.
Related documents
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Shenzhen Zhonghexin Optoelectronic Technology Co., Ltd.