GP8891BS

GP8891XS is a self- powered constant voltage, constant current primary side feedback control chip, suitable for chargers and adapters. GP8891XS adopts special output line loss compensation technology, which can effectively compensate the loss voltage drop of output current on the output line. GP8891XS built- in start circuit, no need for peripheral start resistance, built- in FB lower bias resistance and CS sampling resistance, the periphery is more concise. GP8891XS built- in loop compensation circuit, no peripheral compensation circuit, the system has good stability. GP8891XS can achieve good constant voltage, constant current characteristics, to meet the standby power consumption less than 75mW. GP8891XS has multiple protection functions, including open circuit protection, overvoltage protection, output short circuit protection, secondary Schottky short circuit and other functions. GP8891XS uses a unique single- cycle maximum current turn- off mechanism to avoid various failures caused by triode overcurrent. The GP8891XS is packaged in SOP7.

Applications

• Adapters and chargers for mobile phones, cordless phones, PDAs, MP3s and other portable devices
• LED drive power supply
• Linear power supply and RCC switching power supply upgrade Other auxiliary power supply

Key features

• Self- powered original side feedback control Constant voltage, constant current high precision
• ≤ 75mW standby power consumption
• Adjustable output line loss compensation technology
• Open circuit protection, short circuit protection, over voltage protection, under voltage protection Over temperature protection
• Suitable for double winding and three winding two working modes