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EG4321
Chip Features Specifically designed for lithium battery charging control, integrating constant voltage, constant current, and indicator light control modules. Integrates three precise voltage reference sources internally, specifically for constant voltage, constant current, and indicator light module circuits. Integrates a dual-LED charging indicator conversion circuit and driver circuit internally. Requires minimal external components. Easy to compensate. Low static operating current: 1.6mA
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- Product Description
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- Commodity name: EG4321
- 封装: DIP-8 SOP-8
- 品牌: EG/Yi Jing Wei
Chip Features Specifically designed for lithium battery charging control, integrating constant voltage, constant current, and indicator light control modules. Integrates three precise voltage reference sources internally, specifically for constant voltage, constant current, and indicator light module circuits. Integrates a dual-LED charging indicator conversion circuit and driver circuit internally. Requires minimal external components. Easy to compensate. Low static operating current: 1.6mA
Chip Description
The EG4321 is a lithium battery charge management chip specifically designed for AC/DC power supplies. It features constant voltage, constant current, and automatic switching of indicator light states. It also integrates a dual-LED charging indicator conversion and driver circuit, significantly reducing the number of external components, improving system stability, and lowering production costs.
The EG4321 integrates a 2.5V reference voltage source, a 140mV reference voltage source, and a 20mV reference voltage source. It also includes two operational amplifiers, a current comparator, and an LED control driver circuit. The 2.5V reference voltage source and an internal operational amplifier form a precise voltage control circuit. Users can adjust the output voltage required for the lithium battery constant voltage stage by setting the values of two external resistors used for voltage sampling. The 140mV reference voltage source and another internal operational amplifier form a precise current control circuit. Users can adjust the output current required for the lithium battery constant current stage by setting the value of the external current sampling resistor. The 20mV reference voltage source and the internal current comparator form a precise dual-LED control circuit.
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