Product 產品介紹
Product 產品介紹
NT1854
NT1854
Part Number Cells Protected Overvoltage Threshold(v) Protection FETs Protection for Shutdown Current(uA) Package
Undervoltage Overcurrent Short-circuit
NT1854 1s-cell +/-40mV N-MOS +/-100mV DOC: +/-20mV VDD-0.5V < 0.6uA SOT-23-6
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Overview
The NT1854 protects lithium-ion/lithium-polymer rechargeable battery in the abnormal events of overcharge, overdischarge, discharge overcurrent and charge overcurrent and over temperature (optional) for a 1-cell lithium-ion/lithium polymer battery pack. 

If any of the above abnormal conditions occurs, NT1854 will turn MOSFETs off to protect the battery. 
NT1854 will turn into power down mode to minimize the current consumption when overdischarge protection occurs. 

NT1854 can perform protection functions with only five components - two MOSFETs, two resistors and one capacitor. 

The tiny package of SOT-23-6 is especially suitable for the battery packs in portable devices. 
Features
*High    Detection    Accuracy 
-Overcharge    Detection:±40mV 
-Overdischarge    Detection:    ±100mV 
-Discharge    Overcurrent    Detection:    ±20mV 

*High    Withstand    Voltage 
-Absolute    maximum    ratings:±(VDD-V-) 

*Low    Supply    Current:3.0uA(Typ.)     

*Ultra    SmallPackage 
    -SOT-23-6
 
Applications
*Lithium-ion rechargeable battery packs 
*Lithium-polymer rechargeable battery packs