ไอซี eg4318

EG4318 lead-acid battery charging management chip

EG4318 is a dedicated AC / DC power supply lead-acid battery charge management chip, with constant voltage, constant current and floating three-stage automatic conversion function, while the internal integration of dual-lamp LED charging instructions conversion circuit and drive circuit , Greatly simplifies the number of external components, greatly improving the system stability and reduce production costs. 
  EG4318 integrates a 2.5V reference voltage source, 250mV reference voltage source and 50mV reference voltage source, while integrating two operational amplifiers, a current comparator, float control circuit and LED control drive circuit. 2.5V reference voltage and an internal op amp to form a precise voltage control circuit, the user can set the voltage by sampling the two external resistors and chip 6 feet (Vf) resistance to adjust the size of the lead-acid battery constant pressure section The output voltage must be the size of the 250mV reference voltage and the internal operation of another amplifier to form a precise current control circuit, the user can set the size of the external current sampling resistor to adjust the lead-acid battery constant current required output current size , 50mV reference voltage source and the internal current comparator to form a precise floating voltage control circuit and dual lamp LED control circuit, the user can set the voltage sampling of the two external resistors to adjust the size of the lead-acid battery float section The required output voltage size. Accurate three-stage control lead-acid battery charging, can improve the life of lead-acid batteries.

Features

• Dedicated to lead-acid battery charging control, integrated constant voltage, constant current and floating three-stage control module
• Internal integrated 3-way voltage reference reference source, dedicated to constant voltage, constant current and float module circuit reference source
• Internal integrated dual lamp LED charging instructions conversion circuit and drive circuit
• Very few external components
• Easy to compensate
• Low static operating current: 1.2mA ℃