Overview
LP3710 is the latest high-performance primary-side feedback controller that uses a mixed operation mode (QR/CCM) to achieve high conversion efficiency. LP3710 uses SOT-26 to reduce the amount of resistors, making it an ideal low-cost design. In addition, LP3710 provides lower starting current, energy-saving mode operation, VCC overvoltage protection, and FB pin abnormal condition sensing device to protect the circuit from damage.
FEATUREs
■ Low startup current (<2uA)
■ Mixed operation mode pulse width modulation (CCM/QR)
Operate CCM at heavy load and low input voltage
Operate similar to QR at medium load
Operate in energy saving mode at light load
Enter PFM Mode at no load
■ Built-in adjustable load regulation compensation
■ Constant voltage/constant current operation
■ Output short circuit protection
■ FB Pin open/short circuit protection
■ Soft drive
■ With 8ms soft start
■ Vcc Pin overvoltage protection
■ IC internal over temperature protection
APPLICATIONs
■ Mobile phone adapter
■ Low power AC/DC adapter