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NT1721
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NT1721
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Status
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mass production
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Overview
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The NT1721 protects lithium-ion/lithium-polymer rechargeable battery in the event of overcharge, overdischarge and discharge overcurrent for a 2-serial-cell lithium-ion/lithium- polymer battery pack.
The NT1721 contains high-accuracy voltage detection circuits and delay circuits. When any of the above abnormal conditions occur, NT1721 would turn off external MOSFETs to protect the battery pack. NT1721 then enter into power down mode when overdischarge protection occurs to minimize the current consumption. The protection delay is programmable by external capacitor. Besides, NT1721 provides an optional internal delay time control while connecting ICT pin to GND. The 0 V battery charging function is optional for different applications. |
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Features
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| * High Detection Accuracy -Overcharge Detection: ±25 mV -Overdischarge Detection: ±80 mV -Discharge Overcurrent Detection: ±20 m * Programmable Delay Time * High Input-Voltage Device -Absolute Maximum Rating: 20V -Operating Voltage range: 2V to 18V * Low Power Consumption -Operation Mode: 4uA Typ. -Power-Down Mode: 0.1uA Max. * Optional 0 V Battery Charging Function * Package: 8-Pin TSSOP |
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Applications
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| * Portable Instrumentation * Portable DVD * DSC |
