Safe use of lithium batteries
Lithium batteries have high energy density, long use time, and meet green environmental protection regulations. They have gradually replaced nickel-cadmium batteries and nickel-metal hydride rechargeable batteries and become the preferred rechargeable batteries for portable devices.
When the lithium battery is overcharged, the energy will be excessive when the battery temperature rises, and the electrolyte will decompose to generate gas, which will increase the internal pressure of the battery and threaten the safety. Conversely, in the case of over-discharge, the decomposition of the electrolyte leads to deterioration of battery characteristics and durability, resulting in reduced battery life.
Battery Protection IC
According to the use characteristics of lithium batteries, it is necessary to design a protection circuit to ensure the safety of lithium batteries during overcharge and discharge and short circuit. In addition, for different application environments, the lithium battery protection IC will also integrate more functions.
The lithium battery protects the chip's working environment.
Normal work: Monitor within normal current and voltage, and the battery is in normal use.
Overcharge protection: When the battery voltage rises to a certain threshold, the chip will turn off the internal switch, disconnect the battery and the charger, and protect the battery.
Under-voltage protection: When the battery voltage drops to a certain threshold, the chip will turn off the internal switch, disconnect the battery and the load, and protect the battery.
Over-discharge protection: When the discharge current of the battery increases to a certain threshold, the circuit is disconnected.
Overcurrent protection: When the charging current of the battery increases to a certain threshold, the circuit is disconnected.
Short circuit protection: When the load short circuit causes the battery current to increase sharply, the circuit is disconnected.
GLF Battery Protection IC
GLF series lithium battery protection chip has the characteristics of high adaptability and low power consumption. In addition to basic functions, it also has functions such as 0V rechargeable, current overcharge, shipping mode, and overtemperature protection. Charge protection and lower discharge short-circuit current protection advantages.
GLF73915-AD12C
Ultra-Efficient IQSmartTM
Battery Protection IC with Shipping Mode
Over Charge Detection, VOC: 4.35 VBAT
Over Discharge Detection, VOD: 2.80 VBAT
IOC, Over Charge Current Detection
Low RON:57 mΩ Typ. @ 3.6 VBAT
Quiescent Current, IQ:900 nA Typ. @ 3.6 VBAT
GLF73610-CE23C
Ultra-Efficient, Optimized IQSmartTM Battery Protection IC with Full Protections
Over Charge Detection, VOC: 4.35 VBAT Monitor VOUT to release Voc
Over Discharge Detection, VOD: 2.80 VBAT
Over Charge Current Detection,IOC:100mA
Low RON:115 mΩ Typ. @ 3.6 VBAT
IQ:1.35 µA Typ @ 3.6 VBAT
Short Circuit Protection
GLF73910-AD01
Ultra-Efficient, IQSmartTM Battery Protection IC
Monitor VBAT to release VOC
Over Charge Detection, VOC: 4.35 VBAT
Over Discharge Detection, VOD: 2.80 VBAT
Low RON:36 mΩ Typ. @ 3.6 VBAT
Quiescent Current, IQ: 720 nA Typ @ 3.6 VBAT
Shutdown Current, ISD: 70 nA Typ @ VBAT < VOD
GLF has more than ten lithium battery protection chip products, which are widely recognized by customers for their excellent performance and rich functional integration advantages. For more information, please visit the GLF official website: www.glfipower.cn.
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